# Maintained by Axel Boldt (boldt@math.ucsb.edu) 
#
# This version of the Linux kernel configuration help texts
# corresponds to the kernel versions 2.1.x. Be aware that these are
# development kernels and need not be completely stable.
#
# International versions of this file available on the WWW:
#   - http://jf.gee.kyoto-u.ac.jp/JF/JF-ftp/euc/Configure.help.euc
# is a Japanese translation, maintained by Tetsuyasu YAMADA
# (tetsu@cauchy.nslab.ntt.jp). 
#   - http://nevod.perm.su/service/linux/doc/kernel/Configure.help 
# is a Russian translation, maintained by kaf@linux.nevod.perm.su.
#   - http://www.linux-kheops.com/traduc/kernels/
# has a French translation of the whole kernel, including
# Configure.help. This is maintained by David Bourgin
# (dbourgin@wsc.com). 
#
# Information about what a kernel is, what it does, how to patch and
# compile it and much more is contained in the Kernel-HOWTO, available
# via ftp (user: anonymous) from sunsite.unc.edu in the directory
# /pub/Linux/docs/HOWTO. 
#
# Format of this file: description<nl>variable<nl>helptext<nl><nl>. 
# If the question being documented is of type "choice", we list
# only the first occurring config variable. The help texts
# must not contain empty lines. No variable should occur twice; if it
# does, only the first occurrence will be used by Configure. The lines
# in a help text should be indented two positions. Lines starting with
# `#' are ignored. To be nice to menuconfig, limit your lines to 70
# characters. Use emacs' kfill.el to edit this file or you lose.
#
# If you add a help text to this file, please try to be as gentle as
# possible. Don't use unexplained acronyms and generally write for the
# hypothetical user who has just bought a PC, removed Windows,
# installed Linux and is now recompiling the kernel for the first
# time. Tell them what to do if they're unsure. Technical information
# should go in a README in the Documentation directory. Mention all 
# the relevant READMEs and HOWTOs in the help text.
#
# All this was shamelessly stolen from several different sources. Many
# thanks to all the contributors.  Feel free to use these help texts
# in your own kernel configuration tools. The texts are copyrighted
# (c) 1995,1996 by Axel Boldt and governed by the GNU Public License.

Prompt for development and/or incomplete code/drivers
CONFIG_EXPERIMENTAL
  Some of the various things that Linux supports (such as network 
  drivers, filesystems, network protocols, etc.) can be in a state 
  of development where the functionality, stability, or the level of 
  testing is not yet high enough for general use. This is usually
  known as the "alpha-test" phase amongst developers. If a feature is
  currently in alpha-test, then the developers usually discourage 
  uninformed widespread use of this feature by the general public to
  avoid "Why doesn't this work?" type mail messages. However, active
  testing and use of these systems is welcomed. Just be aware that it
  may not meet the normal level of reliability or it may fail to work
  in some special cases. Detailed bug reports from people familiar with
  the kernel internals are usually welcomed by the developers. 
  Unless you intend to help test and develop a feature or driver that
  falls into this category, or you have a situation that requires using 
  these features you should probably say N here, which will cause this 
  configure script to present you with fewer choices. If you say Y here,
  you will be offered the choice of using features or drivers that are
  currently considered to be in the alpha-test phase.

Kernel math emulation
CONFIG_MATH_EMULATION
  Linux can emulate a math coprocessor (used for floating point
  operations) if you don't have one. 486DX and Pentium processors have
  a math coprocessor built in, 486SX and 386 do not, unless you added
  a 487DX or 387, respectively.  (The messages during boot time can
  give you some hints here ["man dmesg"]) Everyone needs either a
  coprocessor or this emulation. If you enable this emulation even
  though you have a coprocessor, the coprocessor will be used
  nevertheless. (This behavior can be changed with the kernel command
  line option "no387", which comes handy if your coprocessor is
  broken. See the documentation of your boot loader (lilo or loadlin)
  about how to pass options to the kernel at boot time. The lilo
  procedure is also explained in the SCSI-HOWTO, available via ftp
  (user: anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO.) This
  means that it is a good idea to say Y here if you intend to use this
  kernel on different machines. More information about the internals
  of Linux math coprocessor emulation can be found in
  arch/i386/math-emu/README. If you are not sure, say Y; apart from
  resulting in a 45kB bigger kernel, it won't hurt.

Normal floppy disk support
CONFIG_BLK_DEV_FD
  If you want to use your floppy disk drive(s) under Linux, say
  Y. Information about this driver, especially important for IBM
  Thinkpad users, is contained in drivers/block/README.fd.  This
  driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.
  
RAM disk support
CONFIG_BLK_DEV_RAM
  Enabling this option will allow you to use a portion of your RAM
  memory as a block device, so that you can make filesystems on it,
  read and write to it and do all the other things that normal block
  devices (such as harddrives) can do.  It is usually used to load and
  store a copy of a minimal root file system off of a floppy into RAM
  during the initial install of Linux.  Note that the kernel command
  line option "ramdisk=XX" is now obsolete.  For details, read
  Documentation/ramdisk.txt. If you want to compile this as a module (
  = code which can be inserted in and removed from the running kernel
  whenever you want), say M and read Documentation/modules.txt.  Most
  normal users won't need the RAM disk functionality, and can thus say
  N here.

Initial RAM disk (initrd) support
CONFIG_BLK_DEV_INITRD
  The initial RAM disk is a RAM disk that is loaded by the boot loader
  (LOADLIN or LILO) and that is mounted as root before the normal boot
  procedure. It is typically used to load modules needed to mount the
  "real" root file system, etc. See Documentation/initrd.txt for
  details.

Loop device support
CONFIG_BLK_DEV_LOOP
  Enabling this option will allow you to mount a file as a file
  system.  This is useful if you want to check an ISO9660 file system
  before burning the CD, or want to use floppy images without first
  writing them to floppy.  This option also allows one to mount a
  filesystem with encryption.  To use these features, you need a
  recent version of mount (available via ftp (user: anonymous) from
  ftp.win.tue.nl/pub/linux/util/).  Note that this loop device has
  nothing to do with the loopback device used for network connections
  from the machine to itself.  Most users will answer N here.

Enhanced IDE/MFM/RLL disk/cdrom/tape/floppy support
CONFIG_BLK_DEV_IDE 
  This will use the full-featured IDE driver to control up to four IDE
  interfaces, for a combination of up to eight IDE
  disk/cdrom/tape/floppy drives.  Useful information about large
  (>540MB) IDE disks, soundcard IDE ports, module support, and other
  topics, is all contained in Documentation/ide.txt.  If you have one
  or more IDE drives, say Y here.  If your system has no IDE drives, or
  if memory requirements are really tight, you could say N here, and
  select the Old harddisk driver instead to save about 13kB of memory
  in the kernel.  To fine-tune IDE drive/interface parameters for
  improved performance, look for the hdparm package at
  sunsite.unc.edu:/pub/Linux/kernel/patches/diskdrives/

Old harddisk (MFM/RLL/IDE) driver
CONFIG_BLK_DEV_HD_ONLY
  There are two drivers for MFM/RLL/IDE disks.  Most people use the
  newer enhanced driver, but the old one is still around for two
  reasons.  Some older systems have strange timing problems and seem
  to work only with the old driver (which itself does not work with
  some newer systems).  The other reason is that the old driver is
  smaller, since it lacks the enhanced functionality of the new one.
  This makes it a good choice for systems with very tight memory
  restrictions, or for systems with only older MFM/RLL/ESDI drives.
  Choosing the old driver can save 13kB or so of kernel memory.  If
  you are unsure, then just choose the Enhanced IDE/MFM/RLL driver
  instead of this one.

Use old disk-only driver on primary interface
CONFIG_BLK_DEV_HD_IDE
  There are two drivers for MFM/RLL/IDE disks.  Most people use just
  the new enhanced driver by itself.  This option installs the old
  harddisk driver to control the primary IDE/disk interface in the
  system, leaving the new enhanced IDE driver take care of only the
  2nd/3rd/4th IDE interfaces. Doing this will prevent you from having
  an IDE/ATAPI CDROM or tape drive connected to the primary IDE
  interface. Choosing this option may be useful for older systems
  which have MFM/RLL/ESDI controller+drives at the primary port
  address (0x1f0), along with IDE drives at the secondary/3rd/4th port
  addresses.  Normally, just say N here; you will then use the new
  driver for all 4 interfaces.

Include IDE/ATA-2 DISK support
CONFIG_BLK_DEV_IDEDISK
  This will include enhanced support for MFM/RLL/IDE harddisks. If you
  have a MFM/RLL/IDE disk, and there is no special reason to use the
  old harddisk driver instead, say Y.  If you want to compile this
  driver as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want), say M here and read
  Documentation/modules.txt. If unsure, say Y.

Include IDE/ATAPI CDROM support
CONFIG_BLK_DEV_IDECD
  If you have a CDROM drive using the ATAPI protocol, say Y.  ATAPI is
  a new protocol used by IDE CDROM and TAPE drives, similar to the
  SCSI protocol.  Most new CDROM drives use ATAPI, including the
  NEC-260, Mitsumi FX400, Sony 55E, and just about all non-SCSI
  double(2X), quad(4X), and six(6X) speed drives.  At boot time, the
  CDROM drive will be identified along with other IDE devices, as "hdb"
  or "hdc", or something similar.
  If this is your only CDROM drive, you can say N to all other CDROM
  options, but be sure to say Y to the ISO9660 filesystem.  Read the
  CDROM-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO and the file
  Documentation/cdrom/ide-cd.  Note that older versions of lilo (the
  linux boot loader) cannot properly deal with IDE/ATAPI CDROMs, so
  install lilo-16 or higher, available from
  sunsite.unc.edu:/pub/Linux/system/Linux-boot/lilo.
  If you want to compile the driver as a module ( = code which
  can be inserted in and removed from the running kernel whenever you
  want), say M here and read Documentation/modules.txt.

Include IDE/ATAPI TAPE support
CONFIG_BLK_DEV_IDETAPE
  If you have an IDE tape drive using the ATAPI protocol, say Y.
  ATAPI is a new protocol used by IDE tape and CDROM drives, similar
  to the SCSI protocol.  At boot time, the tape drive will be
  identified along with other IDE devices, as "hdb" or "hdc", or
  something similar, and will be mapped to a character device such as
  "ht0".  Be sure to consult the drivers/block/ide-tape.c and
  Documentation/ide.txt files for usage information.  If you want to
  compile the driver as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want), say M here and
  read Documentation/modules.txt.

Include IDE/ATAPI FLOPPY support
CONFIG_BLK_DEV_IDEFLOPPY
  If you have an IDE floppy drive which uses the ATAPI protocol, say
  Y. Chances are that you don't, because these animals are rare.
  ATAPI is a new protocol used by IDE CDROM/tape/floppy drives,
  similar to the SCSI protocol.  At boot time, the FLOPPY drive will
  be identified along with other IDE devices, as "hdb" or "hdc", or
  something similar. If you want to compile the driver as a module ( =
  code which can be inserted in and removed from the running kernel
  whenever you want), say M here and read Documentation/modules.txt.

SCSI emulation support
CONFIG_BLK_DEV_IDESCSI
  This will provide SCSI host adapter emulation for IDE ATAPI devices,
  and will allow you to use a SCSI device driver instead of a native
  ATAPI driver. This is useful if you have an ATAPI device for which
  no native driver has been written; you can then use this emulation
  together with an appropriate SCSI device driver. If both this SCSI
  emulation and native ATAPI support are compiled into the kernel, the
  native support will be used.  Normally, say N.

CMD640 chipset bugfix/support
CONFIG_BLK_DEV_CMD640
  The CMD-Technologies CMD640 chip is used on many common 486 and
  Pentium motherboards, usually in combination with a "Neptune" or
  "SiS" chipset.  Unfortunately, it has a number of rather nasty
  design flaws that can cause severe data corruption under many common
  conditions.  Say Y here to include code which tries to automatically
  detect and correct the problems under Linux.  This option also
  enables access to the secondary IDE ports in some CMD640 based
  systems.  This driver will work automatically in PCI based systems
  (most new systems have PCI slots).  But if your system uses VESA
  local bus (VLB) instead of PCI, you must also supply a kernel boot
  parameter to enable the CMD640 bugfix/support: "ide0=cmd640_vlb" The
  CMD640 chip is also used on add-in cards by Acculogic, and on the
  "CSA-6400E PCI to IDE controller" that some people have. For
  details, read Documentation/ide.txt. If unsure, say Y.

CMD640 enhanced support
CONFIG_BLK_DEV_CMD640_ENHANCED
  This option includes support for setting/autotuning PIO modes and
  prefetch on CMD640 IDE interfaces.  For details, read
  Documentation/ide.txt. If you have a CMD640 IDE interface and your
  BIOS does not already do this for you, then say Y here.  Otherwise
  say N.

RZ1000 chipset bugfix/support
CONFIG_BLK_DEV_RZ1000
  The PC-Technologies RZ1000 chip is used on many common 486 and
  Pentium motherboards, usually along with the "Neptune" chipset.
  Unfortunately, it has a rather nasty design flaw that can cause
  severe data corruption under many conditions.  Say Y here to include
  code which automatically detects and corrects the problem under
  Linux.  This may slow disk throughput by a few percent, but at least
  things will operate 100% reliably. If unsure, say Y.

Intel 82371 PIIX (Triton I/II) DMA support
CONFIG_BLK_DEV_TRITON
  This will improve performance if you have an Intel PCI Triton I/II
  IDE interface chipset (i82371FB or i82371SB). For details, read the
  comments at the beginning of drivers/block/triton.c and
  Documentation/ide.txt. If unsure, say N.

Other IDE chipset support
CONFIG_IDE_CHIPSETS
  Say Y here if you want to include enhanced support for various IDE
  interface chipsets used on motherboards and add-on cards.  This
  enhanced support may be necessary for linux to be able to access the
  3rd/4th drives in some systems.  It may also enable setting of
  higher speed I/O rates to improve system performance with these
  chipsets.  Most of these also require special kernel boot parameters
  to actually turn on the support at runtime.

DTC-2278 support
CONFIG_BLK_DEV_DTC2278
  This driver is enabled at runtime using the "ide0=dtc2278" kernel
  boot parameter.  It enables support for the secondary IDE interface
  of the DTC-2278 card, and permits faster I/O speeds to be set as
  well.  See the Documentation/ide.txt and dtc2278.c files for more
  info.

Holtek HT6560B support
CONFIG_BLK_DEV_HT6560B
  This driver is enabled at runtime using the "ide0=ht6560b" kernel
  boot parameter.  It enables support for the secondary IDE interface
  of the Holtek card, and permits faster I/O speeds to be set as well.
  See the Documentation/ide.txt and ht6560b.c files for more info.

PROMISE DC4030  support (EXPERIMENTAL)
CONFIG_BLK_DEV_PROMISE
  This driver provides support for the second port and cache of
  Promise IDE interfaces, e.g. DC4030 and DC5030. It is enabled at
  kernel runtime using the "ide0=dc4030" kernel boot parameter. See
  the file drivers/block/promise.c file for more info.

OPTi 82C621     support (EXPERIMENTAL)
CONFIG_BLK_DEV_OPTI621
  This is a driver for the OPTi 82C621 EIDE controller.
  Please read the comments at the top of drivers/block/opti621.c.

QDI QD6580 support
CONFIG_BLK_DEV_QD6580
  This driver is enabled at runtime using the "ide0=qd6580" kernel
  boot parameter.  It permits faster I/O speeds to be set.  See the
  Documentation/ide.txt and qd6580.c files for more info.

UMC 8672 support
CONFIG_BLK_DEV_UMC8672
  This driver is enabled at runtime using the "ide0=umc8672" kernel
  boot parameter.  It enables support for the secondary IDE interface
  of the UMC-8672, and permits faster I/O speeds to be set as well.
  See the Documentation/ide.txt and umc8672.c files for more info.

ALI M14xx support
CONFIG_BLK_DEV_ALI14XX
  This driver is enabled at runtime using the "ide0=ali14xx" kernel
  boot parameter.  It enables support for the secondary IDE interface
  of the ALI M1439/1443/1445/1487/1489 chipsets, and permits faster
  I/O speeds to be set as well.  See the Documentation/ide.txt and
  ali14xx.c files for more info.

PROMISE DC4030 support (EXPERIMENTAL)
CONFIG_BLK_DEV_PROMISE
  This driver is enabled at runtime using the "ide0=dc4030" kernel
  boot parameter.  It enables support for the secondary IDE interface
  of the chipset, and takes advantage of the caching features of the
  card.  This driver is known to incur timeouts/retries during heavy
  I/O to drives attached to the secondary interface.  CDROM and TAPE
  devices are not supported yet.  See the Documentation/ide.txt and
  promise.c files for more info.

XT harddisk support
CONFIG_BLK_DEV_XD
  Very old 8 bit hard disk controllers used in the IBM XT computer. To
  include a driver for these, say Y. If you want to compile the driver
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt. It's pretty unlikely that you have one of
  these: say N.

SyQuest EZ parallel port disk support
CONFIG_BLK_DEV_EZ
  If you have a parallel port version of SyQuest's EZ135 or EZ230 removable
  media devices you can use this driver.  Answer Y to build the driver into
  the kernel, or M if you would like to build it as a loadable module.
  Read the file linux/Documentation/ez.txt.  If you have several different
  devices that will share a common parallel port you should build them all
  as modules.

Multiple devices driver support
CONFIG_BLK_DEV_MD
  This driver lets you combine several harddisk partitions into one
  logical block device. Information about how and why to use it and the
  necessary tools are available over ftp (user: anonymous) from
  sweet-smoke.ufr-info-p7.ibp.fr/pub/public/Linux in the md package
  and the md-FAQ. Please read drivers/block/README.md. If unsure, say
  N.

Linear (append) mode
CONFIG_MD_LINEAR
  If you enable this, then your multiple devices driver will be able
  to use the so-called linear mode, i.e. it will combine the harddisk
  partitions by simply appending one to the other. If you want to
  compile this as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want), say M here and
  read Documentation/modules.txt. If unsure, say Y.

RAID-0 (striping) mode
CONFIG_MD_STRIPED
  If you enable this, then your multiple devices driver will be able
  to use the so-called raid0 mode, i.e. it will combine the harddisk
  partitions into one logical device in such a fashion as to fill them
  up evenly, one chunk here and one chunk there. This will increase
  the throughput rate if the partitions reside on distinct disks.  If
  you want to compile this as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want), say M
  here and read Documentation/modules.txt. If unsure, say Y.

Support for Deskstation RPC44 
CONFIG_DESKSTATION_RPC44
  This is a machine with a R4400 100 MHz CPU. To compile a Linux
  kernel that runs on these, say Y here. For details about Linux
  on the MIPS architecture, check out the Linux/MIPS FAQ on the WWW at
  http://lena.fnet.fr/ (To browse the WWW, you need to
  have access to a machine on the Internet that has one of the
  programs lynx, netscape or Mosaic).

Support for Mips Magnum 3000 
CONFIG_MIPS_MAGNUM_3000
  To compile a Linux kernel that runs on these, say Y here. For
  details about Linux on the MIPS architecture, check out the
  Linux/MIPS FAQ on the WWW at http://lena.fnet.fr/ (To browse the
  WWW, you need to have access to a machine on the Internet that has
  one of the programs lynx, netscape or Mosaic).

Support for Mips Magnum 4000
CONFIG_MIPS_MAGNUM_4000
  This is a machine with a R4000 100 MHz CPU. To compile a Linux
  kernel that runs on these, say Y here. For details about Linux
  on the MIPS architecture, check out the Linux/MIPS FAQ on the WWW at
  http://lena.fnet.fr/ (To browse the WWW, you need to
  have access to a machine on the Internet that has one of the
  programs lynx, netscape or Mosaic).

Support for Olivetti M700
CONFIG_OLIVETTI_M700
  This is a machine with a R4000 100 MHz CPU. To compile a Linux
  kernel that runs on these, say Y here. For details about Linux
  on the MIPS architecture, check out the Linux/MIPS FAQ on the WWW at
  http://lena.fnet.fr/ (To browse the WWW, you need to
  have access to a machine on the Internet that has one of the
  programs lynx, netscape or Mosaic).

Support for Deskstation Tyne
CONFIG_DESKSTATION_TYNE
  This is a machine with a R4600 134 MHz CPU. The Linux port for this
  system is idle right now because of hardware or documentation
  problems. For details about Linux on the MIPS architecture, check
  out the Linux/MIPS FAQ on the WWW at http://lena.fnet.fr/ (To browse
  the WWW, you need to have access to a machine on the Internet that
  has one of the programs lynx, netscape or Mosaic).

Support for Acer PICA 1 chipset
CONFIG_ACER_PICA_61
  This is a machine with a R4400 134/150 MHz CPU. To compile a Linux
  kernel that runs on these, say Y here. For details about
  Linux on the MIPS architecture, check out the Linux/MIPS FAQ on the
  WWW at http://lena.fnet.fr/ (To browse the WWW, you need to have
  access to a machine on the Internet that has one of the programs
  lynx, netscape or Mosaic).

Support for DECstation
CONFIG_DECSTATION
  The DECStation 3100 (with a MIPS R2000 series CPU) and DECStation
  5000/xxx (MIPS R3000 series CPU) are also sometimes labeled
  PMAX. They often run the Ultrix operating system. To compile a Linux
  kernel that runs on these, say Y here. For details about Linux
  on the MIPS architecture, check out the Linux/MIPS FAQ on the WWW at
  http://lena.fnet.fr/ (To browse the WWW, you need to
  have access to a machine on the Internet that has one of the
  programs lynx, netscape or Mosaic).

CPU type
CONFIG_CPU_R3000
  Give the type of your machine's MIPS CPU. For this question,
  it suffices to give a unique prefix of the option you want to
  choose. 

Networking support
CONFIG_NET
  Unless you really know what you are doing, you should say Y
  here. The reason is that some programs need kernel networking
  support even if you configure a stand-alone machine that won't be
  connected to any other computer.  If you are upgrading from an older
  kernel, you should consider updating your networking tools too
  because changes in the kernel and the tools often go hand in hand;
  see http://www.inka.de/sites/lina/linux/NetTools/index_en.html for
  details. 

Network aliasing
CONFIG_NET_ALIAS
  This will allow you to set multiple network addresses on the same
  low-level network device driver. Typically used for services that
  act differently based on the address they listen on
  (e.g. "multihosting" or "virtual domains" on the web server apache
  and the ftp server wuftpd) or for connecting to different logical
  networks through the same physical interface (most commonly an
  ethernet networking card).  This is the generic part, later when
  configuring network protocol options you will be asked for
  protocol-specific aliasing support, and you will have to say Y to at
  least one of them.  See Documentation/networking/alias.txt for more
  info.  If you need this feature (for any protocol, like IP) say Y;
  if unsure, say N.

Network firewalls
CONFIG_FIREWALL
  A firewall is a computer which protects a local network from the
  rest of the world: all traffic to and from computers on the local
  net is inspected by the firewall first, and sometimes blocked. If
  you want to configure your Linux box as a firewall for a local
  network, say Y here. If your local network is TCP/IP based, you will
  then also have to say Y to "IP: firewalling", below.  
  You also need to say Y here and enable "IP firewalling" below in
  order to be able to use IP masquerading (i.e. local computers can
  chat with an outside host, but that outside host is made to think
  that it is talking to the firewall box -- makes the local network
  completely invisible and avoids the need to allocate valid IP host
  addresses for the machines on the local net) and IP packet
  accounting (keeping track of what is using all your network
  bandwidth) and IP transparent proxying (makes the computers on the
  local network think they're talking to a remote computer, while in
  reality the traffic is redirected by your Linux firewall to a local
  proxy server). Chances are that you should use this on every machine
  being run as a router and not on any regular host. If unsure, say N.

Sun floppy controller support
CONFIG_BLK_DEV_SUNFD
  This is support for floppy drives on Sun Sparc workstations. Say Y
  if you have a floppy drive, otherwise N. Easy.

Alpha system type
CONFIG_ALPHA_AVANTI
  Find out what type of Alpha motherboard you have. You will probably
  want to read the Linux/Alpha homepage on the WWW at
  http://www.azstarnet.com/~axplinux/ (To browse the WWW, you need to
  have access to a machine on the Internet that has one of the
  programs lynx, netscape or Mosaic). For this question, it suffices
  to give a unique prefix of the option you want to choose. The
  choices:
  ** Avanti: This is for Mustang (AS200), M3 (AS250), Avanti (AS400)
     and XL (a.k.a. "Windows NT Dream Machine" :-) AlphaStations.
     These usually come with a TGA graphics adaptor, so you'll want to
     say Y to "TGA Console support", below, if you have one of these.
  ** Jensen: a.k.a. DEC 2000 a.k.a. DECpc AXP 150, the oldest Alpha
     PC; it sports an EISA bus. The boot process on Jensen machines is
     difficult (no booting from floppies, MILO doesn't work). You need
     to have access to a second Linux workstation. The Linux/Alpha
     FAQ, accessible from the above mentioned WWW page, has details.
  ** Noname: a.k.a. AXPpci33, a PCI-bus based board using the 21066
     Alpha CPU, running at either 166 or 233 MHz. You also want to
     choose this option if you have a UDB (Universal Desktop Box
     a.k.a. Multia) machine.
  ** Cabriolet: also called AlphaPC64, a PCI-bus based board using the
     21064 Alpha CPU typically running at 275 or 300 MHz.
  ** EB66: "Evaluation Board"
  ** EB66+: "Evaluation Board"
###
### Add info about Platform2000, EB164
###

Is it really a true XL
CONFIG_ALPHA_XL
  If your Avanti Machine is of type XL (a.k.a. "Windows NT Dream
  Machine") (as opposed to Mustang (AS200), M3 (AS250) or Avanti
  (AS400)), say Y, otherwise N.

Limit memory to low 16MB
CONFIG_MAX_16M
  This is for some buggy motherboards which cannot properly deal with
  the memory above 16MB. If you have more than 16MB of RAM and
  experience weird problems, you might want to try Y, everyone else
  says N. Note for machines with more that 64MB of RAM: in order for
  the kernel to be able to use the memory above 64MB, pass the command
  line option "mem=XXXM" (where XXX is the memory size in megabytes)
  to your kernel during boot time. See the documentation of your boot
  loader (lilo or loadlin) about how to pass options to the
  kernel. The lilo procedure is also explained in the SCSI-HOWTO,
  available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  You also need at least 512kB
  of RAM cache if you have more than 64MB of RAM.  Some other things
  to try when experiencing seemingly random, "weird" problems: 1)
  passing the "no-hlt" option to the kernel 2) passing the "no-387"
  option to the kernel 3) passing the "mem=4M" option to the kernel
  (thereby disabling all but the first 4M of RAM) 4) disabling the
  cache from your BIOS settings 5) exchanging RAM chips 6) exchanging
  the motherboard.

Using SRM as bootloader
CONFIG_ALPHA_SRM
  There are two different types of booting firmware on Alphas: SRM,
  which is command line driven, and ARC, which uses menus and arrow
  keys. The usual way to load Linux on an Alpha machine is to use MILO
  (a bootloader that lets you pass command line parameters to the
  kernel just like LILO does) which can be loaded either from ARC or
  can be installed directly as a permanent firmware replacement from
  floppy (which requires changing a certain jumper on the
  motherboard). If you want to do either of these, say N here. If MILO
  doesn't work on your system (true for Jensen motherboards), you can
  bypass it altogether and boot Linux directly from an SRM console;
  say Y here in order to do that. Note that you won't be able to boot
  from an IDE disk using SRM. If unsure, say N. Details about the
  Linux/Alpha booting process are contained in the Linux/Alpha FAQ,
  accessible on the WWW from http://www.azstarnet.com/~axplinux/ (To
  browse the WWW, you need to have access to a machine on the Internet
  that has one of the programs lynx, netscape or Mosaic).

Echo console messages on /dev/ttyS1
CONFIG_SERIAL_ECHO
  If you enable this option, all kernel messages that would usually go
  to the console will also be sent to the device /dev/ttyS1 which
  corresponds to a serial port; this could be useful if you attached
  a terminal or printer to that port.

TGA Console Support
CONFIG_TGA_CONSOLE
  Many Alpha systems (e.g the Multia) are shipped with a graphics card
  that implements the TGA interface (much like the VGA standard, but
  older TGA adaptors are *not* VGA compatible).  On such systems, this
  option needs to be enabled so that the TGA driver rather than the
  standard VGA driver is used.  Note that, at this time, there is no X
  server for these systems. If unsure, try N.

PCI bios support
CONFIG_PCI
  Find out whether you have a PCI motherboard. PCI is the name of a
  bus system, i.e. the way the CPU talks to the other stuff inside
  your box. Other bus systems are ISA, EISA, Microchannel (MCA) or
  VESA. If you have PCI, say Y, otherwise N. Note: some old PCI
  motherboards have BIOS bugs and may crash if "PCI bios support" is
  enabled (but they run fine without this option). The PCI-HOWTO,
  available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO, contains valuable information
  about which PCI hardware does work under Linux and which doesn't.
  If some of your PCI devices don't work and you get a warning during
  boot time ("man dmesg"), please follow the instructions at the top
  of include/linux/pci.h.

PCI bridge optimization (experimental)
CONFIG_PCI_OPTIMIZE
  This can improve access times for some hardware devices under
  certain BIOSes if your computer uses a PCI bus system. This is
  recommended; say Y.

MCA support
CONFIG_MCA
  MicroChannel Architecture is found in some IBM PS/2 machines and
  laptops. It is a bus system similar to PCI or ISA.  See
  Documentation/mca.txt before attempting to build an MCA bus kernel.
  Note that this is still experimental code.

Intel 82371 PIIX (Triton I/II) DMA support
CONFIG_BLK_DEV_TRITON
  If your PCI system uses an IDE harddrive (as opposed to SCSI, say)
  and includes the Intel 430FX PCI Triton chipset, you will want to
  enable this option to allow use of bus-mastering DMA data transfers.
  Read the comments at the beginning of drivers/block/triton.c.  You
  can get the latest version of the hdparm utility via ftp (user:
  anonymous) from
  sunsite.unc.edu/pub/Linux/kernel/patches/diskdrives/; it is used to
  tune your harddisk. It is safe to say Y to this question.

System V IPC
CONFIG_SYSVIPC
  Inter Process Communication is a suite of library functions and system
  calls which let processes (= running programs) synchronize and
  exchange information. It is generally considered to be a good thing,
  and some programs won't run unless you enable this. In particular,
  if you want to run the DOS emulator dosemu under Linux (read the
  DOSEMU-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO), you'll need to say Y here. You
  can find documentation about IPC in ipc.info, which is contained in
  sunsite.unc.edu:/pub/Linux/docs/man/info.tar.gz (extract with "tar
  xzvf filename"). These docs are in the info format which is used to
  document GNU software and can be read from within emacs ("Ctrl-h i")
  or with the program info ("man info"). Enabling this option enlarges
  your kernel by about 7kB. Just say Y.

Kernel support for ELF binaries
CONFIG_BINFMT_ELF
  ELF (Executable and Linkable Format) is a format for libraries and
  executables used across different architectures and operating
  systems. This option will enable your kernel to run ELF binaries and
  enlarge it by about 2kB. ELF support under Linux is quickly
  replacing the traditional Linux a.out formats (QMAGIC and ZMAGIC)
  because it is portable (this does *not* mean that you will be able
  to run executables from different architectures or operating
  systems!) and makes building run-time libraries very easy. Many new
  executables are distributed solely in ELF format. You definitely
  want to say Y here. Information about ELF is on the WWW at
  http://www.sjc.ox.ac.uk/users/barlow/elf-howto.html (To browse the
  WWW, you need to have access to a machine on the Internet that has
  one of the programs lynx, netscape or Mosaic).  If you find that
  after upgrading to Linux kernel 1.3 and saying Y here, you still
  can't run any ELF binaries (they just crash), then you'll have to
  install the newest ELF runtime libraries, including ld.so (check the
  file Documentation/Changes for location and latest version). If you
  want to compile this as a module ( = code which can be inserted in
  and removed from the running kernel whenever you want), say M here
  and read Documentation/modules.txt. Saying M or N here is dangerous
  because some crucial programs on your system might be in ELF format.

Kernel support for A.OUT binaries
CONFIG_BINFMT_AOUT
  A.out (Assembler.OUTput) is a set of formats for libraries and
  executables used in the earliest versions of UNIX. Linux used the
  a.out formats QMAGIC and ZMAGIC until they were replaced with the
  ELF format.
  As more and more programs are converted to ELF, the use for a.out
  will gradually diminish. If you disable this option it will reduce
  your kernel by one page. This is not much and by itself does not
  warrant removing support. However its removal is a good idea if you
  wish to ensure that absolutely none of your programs will use this
  older executable format. If you don't know what to answer at this
  point then answer Y. If someone told you "You need a kernel with
  QMAGIC support" then you'll have to say Y here. You may answer M 
  to compile a.out support as a module and later load the module when
  you want to use a program or library in a.out format. Saying M or N
  here is dangerous though, because some crucial programs on your
  system might still be in A.OUT format.

Kernel support for JAVA binaries
CONFIG_BINFMT_JAVA
  JAVA is an object oriented programming language developed by SUN;
  JAVA programs are compiled into "JAVA bytecode" binaries which can
  then be interpreted by run time systems on many different operating
  systems.  These JAVA binaries are becoming a universal executable
  format. Saying Y here allows you to execute a JAVA bytecode binary
  just like any other Linux program: by typing in its name. As more
  and more Java programs become available, the use for this will
  gradually increase. You can even execute HTML files containing JAVA
  applets (= JAVA binaries) if those files start with the string
  "<!--applet-->". If you want to use this, read
  Documentation/java.txt and the Java on Linux HOWTO, available via
  ftp (user: anonymous) at sunsite.unc.edu:/pub/Linux/docs/HOWTO. You
  will then need to install the run time system contained in the Java
  Developers Kit (JDK) as described in the HOWTO. If you disable this
  option it will reduce your kernel by about 4kB. This is not much and
  by itself does not warrant removing support. However its removal is
  a good idea if you do not have the JDK installed. If you don't know
  what to answer at this point then answer Y. You may answer M for
  module support and later load the module when you install the JDK or
  find an interesting Java program that you can't live without.

Processor type
CONFIG_M386
  This is the processor type of your CPU. It is used for optimizing
  purposes. In order to compile a kernel that can run on all CPU types
  (albeit not optimally fast), you can specify "386" here.  If you
  specify "486" or "Pentium" or "PPro", then the kernel will run on
  486 and Pentium (=586) and Pentium Pro (=686) CPUs. In rare cases,
  it can make sense to specify "Pentium" even if running a 486: the
  kernel will be smaller but slower. On the other hand, if you use a
  compiler before gcc 2.7 (say "gcc -v" to find out), then you have to
  say "386" or "486" here even if running on a Pentium or PPro
  machine. If you don't know what to do, say "386".

Video mode selection support
CONFIG_VIDEO_SELECT
  This enables support for text mode selection on kernel startup. If you
  want to take advantage of some high-resolution text mode your card's
  BIOS offers, but the traditional Linux utilities like SVGATextMode
  don't, you can enable this and set the mode using the "vga=" option
  from your boot loader (LILO or LOADLIN) or set "vga=ask" which brings
  up a video mode menu on kernel startup. Read Documentation/svga.txt
  for more information. If unsure, say N.

Compile the kernel into the ELF object format 
CONFIG_ELF_KERNEL
  ELF (Executable and Linkable Format) is a format for libraries and
  executables used across different architectures and operating
  systems. This option will cause the resulting kernel to be in ELF
  format, which is generally desirable, so say Y. However, it only
  works if your compiler and linker can produce ELF code.

Is your ELF compiler an extra compiler
CONFIG_EXTRA_ELF_COMPILER
  If you have a linuxelf-gcc as opposed to linux-gcc, say Y, otherwise
  N.

Generate little endian code
CONFIG_CPU_LITTLE_ENDIAN
  If your compiler is mipsel-linux-gcc or mipsel-linuxelf-gcc (as
  opposed to mips-linux-gcc or mips-linuxelf-gcc), say Y here,
  otherwise N. Most MIPS machines use little-endian code, but it might
  be necessary to run older Mips systems, such as the Sony News and
  MIPS RC3xxx, in big endian mode.

Enable loadable module support
CONFIG_MODULES
  Kernel modules are small pieces of compiled code which can be 
  inserted in or removed from the running kernel, using the
  programs insmod and rmmod. This is described in the file 
  Documentation/modules.txt. Modules can be device drivers, file 
  systems, binary executable formats, and so on. If you think that 
  you may want to make use of modules with this kernel in the future, 
  then say Y here. If unsure, say Y.

Set version information on all symbols for modules
CONFIG_MODVERSIONS
  Usually, modules have to be recompiled whenever you switch to a new
  kernel. Enabling this option makes it possible, and safe, to use the
  same modules even after compiling a new kernel; this requires the
  program modprobe. All the software needed for module support is in
  the modules package (check the file Documentation/Changes for
  location and latest version).  NOTE: if you say Y here but don't
  have the program genksyms (which is also contained in the above
  mentioned modules package), then the building of your kernel will
  fail.  If you are going to use modules that are generated from
  non-kernel sources, you would benefit from this option. Otherwise
  it's not that important. So, N ought to be a safe bet.

Kernel daemon support
CONFIG_KERNELD
  Normally when you have selected some drivers and/or filesystems to
  be created as loadable modules, you also have the responsibility to
  load the corresponding module (via insmod/modprobe) before you can
  use it.  If you select Y here, the kernel will take care of this all
  by itself, together with the user level daemon "kerneld".  Note that
  "kerneld" will also automatically unload all unused modules, so you
  don't have to use "rmmod" either.  kerneld will also provide support
  for different user-level beeper and screen blanker programs later
  on.  The "kerneld" daemon is included in the modules package (check
  Documentation/Changes for latest version and location). You will
  probably want to read the kerneld mini-HOWTO, available via ftp
  (user: anonymous) from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini. If unsure, say Y.

ARP daemon support (EXPERIMENTAL)
CONFIG_ARPD
  Normally, the kernel maintains an internal cache which maps IP 
  addresses to hardware addresses on the local network, so that
  Ethernet/Token Ring/ etc. frames are sent to the proper address on
  the physical networking layer.  For small networks having a few
  hundred directly connected hosts or less, keeping this address
  resolution (ARP) cache inside the kernel works well.  However,
  maintaining an internal ARP cache does not work well for very large
  switched networks, and will use a lot of kernel memory if TCP/IP
  connections are made to many machines on the network.  By enabling
  this option, the kernel's internal ARP cache will never grow to more
  than 256 entries (the oldest entries are expired in a LIFO manner)
  and communication will be attempted with an external ARP daemon,
  arpd.  This code is still experimental.  If you do enable arpd
  support, you should obtain a copy of arpd from
  http://www.loran.com/~layes/arpd/index.html.  If unsure, say N.

TCP/IP networking
CONFIG_INET
  These are the protocols used on the Internet and on most local
  Ethernets. The safest is to say Y here (which will enlarge your
  kernel by about 35 kB), since some programs (e.g. the X window
  system) use TCP/IP even if your machine is not connected to any
  other computer. You will get the so-called loopback device which
  allows you to ping yourself (great fun, that!). This option is also
  necessary if you want to use the full power of term (term is a
  program which gives you almost full Internet connectivity if you
  have a regular dial up shell account on some Internet connected Unix
  computer. Read the Term-HOWTO, available via ftp (user: anonymous)
  on sunsite.unc.edu:/pub/Linux/docs/HOWTO).  Short answer:
  say Y.

IP: forwarding/gatewaying
CONFIG_IP_FORWARD
  People who want to use their Linux box as the router for a local
  network (i.e. the computer responsible for distributing Internet
  traffic to and from the machines in the local network and the
  subnetworks) should say Y here (thereby enlarging their kernel by
  about 5 kB). Note that in this case, you possibly have two ethernet
  devices in your computer: one for the "outside world" and one for
  your local net. The kernel is not able to recognize both at boot
  time without help; for details read the
  Multiple-Ethernet-mini-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.  If your box is
  connected to two networks, it may still make sense to say N here,
  namely if you want to turn your box into a firewall protecting a
  local network from the internet. The Firewall-HOWTO tells you how to
  do this. If your setup is more complex, say you are connected to
  three networks and you want to act as a firewall between two of them
  and route traffic for the others, you need to say Y here and enable
  IP firewalling below. If you intend to use IP masquerading (i.e. IP
  traffic from one of the local computers and destined for an outside
  host is changed by your box so that it appears to come from you),
  you'll have to say Y here and also to IP firewalling and IP
  masquerading below. You should also say Y here if you want to
  configure your box as a SLIP (the protocol for sending internet
  traffic over telephone lines) or PPP (a better SLIP) server for
  other people to dial into and your box is connected to a local
  network at the same time. You would then most likely use proxy-ARP
  (Address Resolution Protocol), explained in the Proxy-Arp mini howto
  on sunsite in /pub/Linux/docs/HOWTO/mini. You also need to say Y
  here if you want to run mrouted in order to do multicast routing as
  used on the MBONE (a high bandwidth network on top of the internet
  which carries audio and video broadcasts) for example. In this case,
  say Y to "IP: multicasting" and "IP: multicast routing" as well. If
  unsure, say N.

IP: multicasting
CONFIG_IP_MULTICAST
  This is code for addressing several networked computers at once,
  enlarging your kernel by about 2 kB. If you are using gated, the
  daemon that updates your computer's routing tables, you will need to
  have this option compiled in. You also need multicasting if you
  intend to participate in the MBONE, a high bandwidth network on top
  of the internet which carries audio and video broadcasts. More
  information about the MBONE is on the WWW at
  http://www.best.com/~prince/techinfo/mbone.html (to browse the WWW,
  you need to have access to a machine on the Internet that has one of
  the programs lynx, netscape or Mosaic). Information about the
  multicast capabilities of the various network cards is contained in
  drivers/net/README.multicast. For most people, it's safe to say N.

IP: optimize as router not host
CONFIG_IP_ROUTER
  Some Linux network drivers use a technique called copy and checksum
  to optimize host performance. For a machine which is forwarding most
  packets to another host this is however a loss. This parameter turns
  off copy and checksum from devices. It may make other changes in the
  future.

IP: firewalling
CONFIG_IP_FIREWALL
  If you want to configure your Linux box as a firewall for a local
  TCP/IP based network, say Y here. This will enlarge your kernel by
  about 2kB. You may need to read the FIREWALL-HOWTO, available via
  ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. Also, you will need the
  ipfwadm tool (available via ftp (user: anonymous) from
  ftp.xos.nl/pub/linux/ipfwadm/) to allow selective blocking of
  internet traffic based on type, origin and destination.  You need to
  enable IP firewalling in order to be able to use IP masquerading
  (i.e. local computers can chat with an outside host, but that
  outside host is made to think that it is talking to the firewall box
  -- makes the local network completely invisible and avoids the need
  to allocate valid IP host addresses for the machines on the local
  net) and IP packet accounting (keeping track of what is using all
  your network bandwidth) and IP transparent proxying (makes the
  computers on the local network think they're talking to a remote
  computer, while in reality the traffic is redirected by your Linux
  firewall to a local proxy server). If unsure, say N.

IP: firewall packet netlink device
CONFIG_IP_FIREWALL_NETLINK
  If you say Y here and when packets hit your Linux firewall and are
  blocked, the first 128 bytes of each such packet are passed on to
  optional user space monitoring software that can then look for
  attacks and take actions such as paging the administrator of the
  site. To use this, you need to create a character special file under
  /dev with major number 36 and minor number 3 using mknod ("man
  mknod"), and you need (to write) a program that reads from that
  device and takes appropriate action.

IP: accounting
CONFIG_IP_ACCT
  This keeps track of your IP network traffic and produces some
  statistics. Usually, you only want to say Y here if your box will be
  a router or a firewall for some local network, in which case you
  naturally should have said Y to IP forwarding/gatewaying resp. IP
  firewalling. The data is accessible with "cat /proc/net/ip_acct", so
  you want to say Y to the /proc filesystem below, if you say Y
  here. To specify what exactly should be recorded, you need the tool
  ipfwadm (available via ftp (user: anonymous) from
  ftp.xos.nl/pub/linux/ipfwadm/).

IP: tunneling
CONFIG_NET_IPIP
  Tunneling means encapsulating data of one protocol type within
  another protocol and sending it over a channel that understands the
  encapsulating protocol. This particular tunneling driver implements
  encapsulation of IP within IP, which sounds kind of pointless, but
  can be useful if you want to make your (or some other) machine
  appear on a different network than it physically is, or to use
  mobile-IP facilities (allowing laptops to seamlessly move between
  networks without changing their IP addresses; check out
  http://anchor.cs.binghamton.edu/~mobileip/LJ/index.html). Enabling
  this option will produce two modules ( = code which can be inserted
  in and removed from the running kernel whenever you want), one
  encapsulator and one decapsulator. You can read details in
  drivers/net/README.tunnel. Most people can say N.
  
IP: firewall packet logging
CONFIG_IP_FIREWALL_VERBOSE
  This gives you information about what your firewall did with
  packets it received. The information is handled by the klogd demon
  which is responsible for kernel messages ("man klogd").

IP: transparent proxying
CONFIG_IP_TRANSPARENT_PROXY
  This enables your Linux firewall to transparently redirect any
  network traffic originating from the local network and destined
  for a remote host to a local server, called a "transparent proxy
  server".  This makes the local computers think they are talking to
  the remote end, while in fact they are connected to the local
  proxy. Redirection is activated by defining special input firewall
  rules (using the ipfwadm utility) and/or by doing an appropriate
  bind() system call.

IP: masquerading
CONFIG_IP_MASQUERADE
  If one of the computers on your local network for which your Linux
  box acts as a firewall wants to send something to the outside, your
  box can "masquerade" as that computer, i.e. it forwards the traffic
  to the intended outside destination, but makes it look like it came
  from the firewall box itself. It works both ways: if the outside
  host replies, the Linux firewall will silently forward the traffic
  to the corresponding local computer. This way, the computers on your
  local net are completely invisible to the outside world, even though
  they can reach the outside and can be reached. This makes it
  possible to have the computers on the local network participate on
  the internet even if they don't have officially registered IP
  addresses.  (This last problem can also be solved by connecting the
  Linux box to the Internet using SLiRP [SLiRP is a SLIP/PPP emulator
  that works if you have a regular dial up shell account on some UNIX
  computer; get it via ftp (user: anonymous) from
  ftp://sunsite.unc.edu/pub/Linux/system/Network/serial/].)  Details
  on how to set things up are contained in the IP Masquerading FAQ,
  available at http://www.indyramp.com/masq/. If you say Y here, then
  the modules ip_masq_ftp.o (for ftp transfers through the firewall),
  ip_masq_irc.o (for irc chats through the firewall), and
  ip_masq_raudio.o (for realaudio downloads through the firewall) will
  automatically be compiled. Modules are pieces of code which can be
  inserted in and removed from the running kernel whenever you want;
  read Documentation/modules.txt for details.

IP: always defragment 
CONFIG_IP_ALWAYS_DEFRAG 
  This option means that all incoming fragments (= parts of IP packets
  that arose when some host between origin and destination decided
  that the IP packets were too large and cut them in pieces) will be
  reassembled (defragmented) before being processed, even if they are
  about to be forwarded.  This option is highly recommended if you
  have enabled the masquerading support (CONFIG_IP_MASQUERADE),
  because that facility requires that second and further fragments can
  be related to TCP or UDP port numbers, which are only stored in the
  first fragment.  When using IP firewall support
  (CONFIG_IP_FIREWALL), you might also want to enable this option, to
  have a more reliable firewall (otherwise second and further
  fragments will always be accepted by the firewall).  When using
  transparent proxying (CONFIG_IP_TRANSPARENT_PROXY), this option is
  implicit, although it is safe to say Y here. Do not say Y to this
  option except when running either a firewall that is the sole link
  to your network or a transparent proxy. Never ever say Y to this for
  a normal router or host.

IP: aliasing support
CONFIG_IP_ALIAS
  Sometimes it is useful to give several IP addresses to a single
  physical network interface (= serial port or ethernet card). The
  most common case is that you want to serve different WWW or ftp
  documents to the outside according to which of your host names was
  used to connect to you. This is called "multihosting" or "virtual
  domains" and is explained in detail on the WWW at
  http://www.thesphere.com/~dlp/TwoServers/ (to browse the WWW, you
  need to have access to a machine on the Internet that has one of the
  programs lynx, netscape or Mosaic). Another scenario would be that
  there are two logical networks living on your local ethernet and you
  want to access them both with the same ethernet card. The
  configuration of these alias addresses is done with a special name
  syntax explained in Documentation/networking/alias.txt. If you want
  this, say Y. Most people don't need it and say N.

IP: multicast routing
CONFIG_IP_MROUTE
  This is used if you want your machine to act as a router for IP
  packets that have several destination addresses. It is needed on the
  MBONE, a high bandwidth network on top of the internet which carries
  audio and video broadcasts. In order to do that, you would most
  likely run the program mrouted. Information about the multicast
  capabilities of the various network cards is contained in
  drivers/net/README.multicast. If you haven't heard about it, you
  don't need it.

PC/TCP compatibility mode
CONFIG_INET_PCTCP
  If you have been having difficulties telneting to your Linux machine
  from a DOS system that uses (broken) PC/TCP networking software (all
  versions up to OnNet 2.0) over your local ethernet  try enabling this
  option.  Everyone else says N. People having problems with NCSA telnet
  should see the file linux/Documentation/networking/ncsa-telnet.

Reverse ARP
CONFIG_INET_RARP
  Since you asked: if there are (usually diskless or portable)
  machines on your local network that know their hardware ethernet
  addresses but don't know their IP addresses upon startup, they can
  send out a Reverse Address Resolution Protocol (RARP) request to
  find out their own IP addresses. Diskless Sun 3 machines use this
  procedure at boot time. If you want your Linux box to be able to
  *answer* such requests, say Y here; you'd have to run the program
  rarp ("man rarp") on your box. If you actually want to use a
  diskless Sun 3 machine as an Xterminal to Linux, say Y here and
  fetch Linux-Xkernel from
  ftp://sunsite.unc.edu/pub/Linux/system/Network/boot.net/.  Superior
  solutions to the problem of booting and configuring machines over a
  net connection are given by the protocol BOOTP and its successor
  DHCP. See the DHCP FAQ
  http://web.syr.edu/~jmwobus/comfaqs/dhcp.faq.html for details.  If
  you want to compile RARP support as a module ( = code which can be
  inserted in and removed from the running kernel whenever you want),
  say M here and read Documentation/modules.txt.  If you don't
  understand a word of the above, say N and rest in peace.

Assume subnets are local
CONFIG_INET_SNARL
  Say Y if you are on a subnetted network with all machines connected
  by Ethernet segments only, as this option optimizes network access
  for this special case. If there are other connections, e.g. SLIP
  links, between machines of your IP network, say N.  If in doubt, say
  N. The PATH mtu discovery facility will cover most cases anyway.

Disable Path MTU Discovery (normally enabled)
CONFIG_NO_PATH_MTU_DISCOVERY
  MTU (maximal transfer unit) is the size of the chunks we send out
  over the net. "Path MTU Discovery" means that, instead of always
  sending very small chunks, we start out sending big ones and if we
  then discover that some host along the way likes its chunks smaller,
  we adjust to a smaller size. This is good, so most people say
  N here. However, some versions of DOS NCSA telnet (and other software)
  are broken and can only connect to your Linux machine if you say Y
  here. See Documentation/networking/ncsa-telnet for the location
  of fixed NCSA telnet clients. If in doubt, say N.

Path MTU Discovery (normally enabled)
CONFIG_PATH_MTU_DISCOVERY
  MTU (maximal transfer unit) is the size of the chunks we send out
  over the net. "Path MTU Discovery" means that, instead of always
  sending very small chunks, we start out sending big ones and if we
  then discover that some host along the way likes its chunks smaller,
  we adjust to a smaller size. This is good, so most people say
  Y here. However, some versions of DOS NCSA telnet (and other software)
  are broken and can only connect to your Linux machine if you say N
  here. See Documentation/networking/ncsa-telnet for the location
  of fixed NCSA telnet clients. If in doubt, say Y.

Disable NAGLE algorithm (normally enabled)
CONFIG_TCP_NAGLE_OFF
  The NAGLE algorithm works by requiring an acknowledgment before
  sending small IP frames (= packets).  This keeps tiny telnet and
  rlogin packets from congesting Wide Area Networks.  Most people
  strongly recommend to say N here, thereby leaving NAGLE
  enabled. Those programs that would benefit from disabling this
  facility can do it on a per connection basis themselves.

IP: Drop source routed frames
CONFIG_IP_NOSR
  Usually, the originator of an IP frame (= packet) specifies only the
  destination, and the hosts along the way do the routing, i.e. they
  decide how to forward the frame. However, there is a feature of the
  IP protocol that allows to specify the full route for a given frame
  already at its origin. A frame with such a fully specified route is
  called "source routed". The question now is whether we should honour
  these route requests when such frames arrive, or if we should
  drop all those frames instead. Honouring them can introduce security
  problems (and is rarely a useful feature), and hence it is recommended
  that you say Y here unless you really know what you're doing.

IP: Allow large windows (not recommend if <16Mb of memory)
CONFIG_SKB_LARGE
  On high speed, long distance networks the performance limit on 
  networking becomes the amount of data a machine can buffer until the
  other end confirms its reception. (At 45Mbit/second there are a lot
  of bits between New York and London ..). This option allows larger
  amounts of data to be "in flight" at a given time. It also means a user
  process can require a lot more memory for network buffers and thus this
  option is best only used on machines with 16Mb of memory or higher. 
  Unless you are using long links with end to end speeds of over 2Mbit
  a second or   satellite links this option will make no difference to
  performance.

The IPv6 protocol
CONFIG_IPV6
  This is experimental support for the next version of the Internet
  Protocol IP version 6 (also called IPng "IP next
  generation"). Features of this new protocol include: expanded
  address space, authentication and privacy, and seamless
  interoperability with the current version of IP. For details, see
  http://playground.sun.com/pub/ipng/html/ipng-main.html and the file
  net/ipv6/README in the kernel source.  The IPv6 support is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt.  It's
  safe to say N for now.

The IPX protocol
CONFIG_IPX
  This is support for the Novell networking protocol, IPX, commonly
  used for local networks of Windows machines. You need it if you want
  to access Novell Netware file or print servers using the Linux
  Novell client ncpfs (available via ftp (user: anonymous) from
  sunsite.unc.edu:/pub/Linux/system/Filesystems/) or from within the
  Linux DOS emulator dosemu (read the DOSEMU-HOWTO, available in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO). In order to do the former,
  you'll also have to say Y to "NCP filesystem support", below. To
  turn your Linux box into a fully featured Netware file server and
  IPX router, say Y here and fetch either lwared from
  sunsite.unc.edu:/pub/Linux/system/Network/daemons/ or mars_nwe from
  ftp.gwdg.de:/pub/linux/misc/ncpfs. For more information, read the
  IPX-HOWTO in sunsite.unc.edu:/pub/Linux/docs/howto. The IPX driver
  would enlarge your kernel by about 5 kB. This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt.
  Unless you want to integrate your Linux box with a local Novell
  network, say N.

Full internal IPX network
CONFIG_IPX_INTERN
  The full internal IPX network enables you to allocate sockets on
  different virtual nodes of the internal network. This is done by
  evaluating the field sipx_node of the socket address given to the bind
  call. So applications should always initialize the node field to 0
  when binding a socket on the primary network. In this case the socket
  is assigned the default node that has been given to the kernel when
  the internal network was created.
  By enabling the full internal IPX network the cross-forwarding of
  packets targeted at 'special' sockets to sockets listening on the
  primary network is disabled. This might break existing applications,
  especially RIP/SAP daemons. A RIP/SAP daemon that works well with the
  full internal net can be found on ftp.gwdg.de:/pub/linux/misc/ncpfs.
  If you don't know what you are doing, say N.

IPX Type 20 Routing
CONFIG_IPX_PPROP_ROUTING
  IPX Type 20 packets are special broadcast messages designed to work
  across routers.  If you are using an internal network, have multiple
  interfaces that route IPX, or will want to route IPX connections over
  ppp to internal networks, setting this will allow the type 20 packets
  to be propagated to all connected networks.  These packets are used by
  Novell NETBIOS and the NETBIOS name functions of SMB protocols that
  work over IPX (e.g. the "Network Neighborhood" on another popular OS
  cum GUI).  In brief, if your Linux box needs to route IPX packets,
  this should be set to Y.

Appletalk DDP
CONFIG_ATALK
  Appletalk is the way Apple computers speak to each other on a
  network. EtherTalk is the name used for appletalk over ethernet and
  Localtalk is appletalk over the apple serial links. If your linux box 
  is connected to such a network and you want to join the conversation,
  say Y. You will need to use the netatalk package so that your Linux
  box can act as a print and file server for macs as well as access
  appletalk printers. Check out
  http://artoo.hitchcock.org/~flowerpt/projects/linux-netatalk/ on the
  WWW for details (to browse the WWW, you need to have access to a
  machine on the Internet that has one of the programs lynx, netscape
  or Mosaic). The NET-2-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO contains valuable information
  as well. This driver is also available as a module ( = code which
  can be inserted in and removed from the running kernel whenever you
  want). If you want to compile it as a module, say M here and read
  Documentation/modules.txt. I hear that the GNU boycott of Apple is
  over, so even politically correct people are allowed to say Y here.
  At the time the kernel is released the localtalk drivers are not
  yet ready to ship. The kernel however supports localtalk and when
  such drivers become available all you will need to do is download
  and install the localtalk driver.

Amateur Radio AX.25 Level 2
CONFIG_AX25
  This is the protocol used for computer communication over amateur
  radio. It is either used by itself for point-to-point links, or to
  carry other protocols such as tcp/ip. To use it, you need a device
  that connects your Linux box to your amateur radio. You can either
  use a low speed TNC (a Terminal Node Controller acts as a kind of
  modem connecting your computer's serial port to your radio's
  microphone input and speaker output) supporting the KISS protocol or
  one of the various SCC cards that are supported by the Ottawa PI,
  the Gracilis Packetwin or the generic Z8530 driver. Another option
  are the Baycom modem serial and parallel port hacks or the soundcard
  modem (supported by their own drivers). If you say Y here, you also
  have to say Y to one of those drivers. Information about where to
  get supporting software for Linux amateur radio as well as
  information about how to configure an AX.25 port is contained in the
  HAM-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. You might also want to check
  out the file Documentation/networking/ax25.txt in the kernel
  source. More information about digital amateur radio in general is
  on the WWW at http://www.tapr.org/tapr/html/pkthome.html.  (To
  browse the WWW, you need to have access to a machine on the Internet
  that has one of the programs lynx, netscape or Mosaic).  This driver
  is also available as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want). If you want to
  compile it as a module, say M here and read
  Documentation/modules.txt.

Amateur Radio NET/ROM
CONFIG_NETROM
  NET/ROM is a network layer protocol on top of AX.25 useful for
  routing.  A comprehensive listing of all the software for Linux
  amateur radio users as well as information about how to configure an
  AX.25 port is contained in the HAM-HOWTO, available via ftp (user:
  anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO. You also might
  want to check out the file Documentation/networking/ax25.txt. More
  information about digital amateur radio in general is on the WWW at
  http://www.tapr.org/tapr/html/pkthome.html (To browse the WWW, you
  need to have access to a machine on the Internet that has one of the
  programs lynx, netscape or Mosaic).
  This driver is also available as a module ( = code which can be
  inserted in and removed from the running kernel whenever you
  want). If you want to compile it as a module, say M here and read
  Documentation/modules.txt.

AX.25 over Ethernet
CONFIG_BPQETHER
  AX.25 is the protocol used for computer communication over amateur
  radio. If you say Y here, you will be able to send and receive AX.25
  traffic over ethernet (also called "BPQ AX.25"), which could be
  useful if some other computer on your local network has a direct
  amateur radio connection.

Amateur Radio X.25 PLP (Rose)
CONFIG_ROSE
  The Packet Layer Protocol (PLP) is a way to route packets over X.25
  connections in general and amateur radio AX.25 connections in
  particular, essentially an alternative to NET/ROM.  A comprehensive
  listing of all the software for Linux amateur radio users as well as
  information about how to configure an AX.25 port is contained in the
  HAM-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. You also might want to check
  out the file Documentation/networking/ax25.txt. More information
  about digital amateur radio in general is on the WWW at
  http://www.tapr.org/tapr/html/pkthome.html (To browse the WWW, you
  need to have access to a machine on the Internet that has one of the
  programs lynx, netscape or Mosaic).  This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt.

Bridging (EXPERIMENTAL)
CONFIG_BRIDGE
  If you say Y here, then your Linux box will be able to act as an
  ethernet bridge, which means that the different ethernet segments it
  is connected to will appear as one ethernet to the
  participants. Several such bridges can work together to create even
  larger networks of ethernets using the IEEE802.1 spanning tree
  algorithm. As this is a standard, Linux bridges will interwork
  properly with other third party bridge products. In order to use
  this, you'll need the bridge configuration tools available via ftp
  (user: anonymous) from shadow.cabi.net. Note that if your box acts
  as a bridge, it probably contains several ethernet devices, but the
  kernel is not able to recognize more than one at boot time without
  help; for details read the Multiple-Ethernet-mini-HOWTO, available
  via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini. The Bridging code is
  still in test. If unsure, say N.

Kernel/User network link driver
CONFIG_NETLINK
  This driver allows for two-way communication between certain parts
  of the kernel or modules and user processes; the user processes are
  able to read from and write to character special files in the /dev
  directory having major mode 36. So far, the kernel uses it to
  publish some network related information if you enable "Routing
  messages", below. It is also used by the firewall code if you say Y
  to "Kernel/User network link driver" further down.  You also need to
  say Y here if you want to use arpd, a daemon that helps keep the
  internal ARP cache (a mapping between IP addresses and hardware
  addresses on the local network) small. If unsure, say N.

Routing messages
CONFIG_RTNETLINK
  If you enable this and create a character special file /dev/route
  with major number 36 and minor number 0 using mknod ("man mknod"),
  you can read some network related routing information from that
  file. Everything you write to that file will be discarded.

SCSI support?
CONFIG_SCSI
  If you want to use a SCSI harddisk, SCSI tapedrive, SCSI CDROM or
  any other SCSI device under Linux, say Y and make sure that you know
  the name of your SCSI host adaptor (the card inside your computer
  that "speaks" the SCSI protocol), because you will be asked for
  it. You also need to say Y here if you want support for the parallel
  port version of the 100MB IOMEGA ZIP drive. Please read the
  SCSI-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt and
  Documentation/scsi.txt.

SCSI disk support
CONFIG_BLK_DEV_SD
  If you want to use a SCSI harddisk or the SCSI or parallel port
  version of the IOMEGA ZIP drive under Linux, say Y and read the
  SCSI-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This is NOT for SCSI
  CDROMs. This driver is also available as a module ( = code which can
  be inserted in and removed from the running kernel whenever you
  want). If you want to compile it as a module, say M here and read
  Documentation/modules.txt and Documentation/scsi.txt.
  
SCSI tape support
CONFIG_CHR_DEV_ST
  If you want to use a SCSI tapedrive under Linux, say Y and read the
  SCSI-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO and drivers/scsi/README.st in
  the kernel source. This is NOT for SCSI CDROMs. This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt and
  Documentation/scsi.txt .

SCSI CDROM support
CONFIG_BLK_DEV_SR
  If you want to use a SCSI CDROM under Linux, say Y and read the
  SCSI-HOWTO and the CDROM-HOWTO from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. Also make sure to enable the
  ISO9660 filesystem later. This driver is also available as a module
  ( = code which can be inserted in and removed from the running
  kernel whenever you want). If you want to compile it as a module,
  say M here and read Documentation/modules.txt and
  Documentation/scsi.txt .

Enable vendor-specific extensions (for SCSI CDROM)
CONFIG_BLK_DEV_SR_VENDOR
  This enables the usage of vendor specific SCSI commands. This is
  required for some stuff which is newer than the SCSI-II standard,
  most important is the MultiSession CD support. You'll probably want
  to say Y here, unless you have a _real old_ CD-ROM drive.

SCSI generic support
CONFIG_CHR_DEV_SG
  If you want to use SCSI scanners, synthesizers or CD-writers or just
  about anything having "SCSI" in its name other than harddisks,
  CDROMs or tapes, say Y here. Those won't be supported by the kernel
  directly, so you need some additional software which knows how to
  talk to these devices using the SCSI protocol. For CD-writers, you
  would need the program cdwrite, available via ftp (user: anonymous)
  from sunsite.unc.edu:/pub/Linux/utils/disk-management; for other
  devices, it's possible that you'll have to write the driver software
  yourself, so have a look at the SCSI-HOWTO and at the
  SCSI-Programming-HOWTO, both available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. If you want to compile this
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt and Documentation/scsi.txt.

Probe all LUNs on each SCSI device
CONFIG_SCSI_MULTI_LUN
  If you have a SCSI device that supports more than one LUN (Logical
  Unit Number), e.g. a CD jukebox, you should say Y here so that all
  will be found by the SCSI driver. An SCSI device with multiple LUNs
  acts logically like multiple SCSI devices. The vast majority of SCSI
  devices have only one LUN, and so most people can say N here and
  should in fact do so, because it is safer.

Verbose SCSI error reporting (kernel size +=12K)
CONFIG_SCSI_CONSTANTS
  The error messages regarding your SCSI hardware will be easier to
  understand if you enable this; it will enlarge your kernel by about
  12KB. If in doubt, say Y.

AdvanSys SCSI support
CONFIG_SCSI_ADVANSYS
  This is a driver for all SCSI host adaptors manufactured by
  AdvanSys. It is documented in the kernel source in
  drivers/scsi/advansys.c. This driver is also available as a module (
  = code which can be inserted in and removed from the running kernel
  whenever you want). If you want to compile it as a module, say M
  here and read Documentation/modules.txt.

Adaptec AHA152X/2825 support
CONFIG_SCSI_AHA152X
  This is support for the AHA-1510, AHA-1520, AHA-1522, and AHA-2825
  SCSI host adaptors. It is explained in section 3.3 of the
  SCSI-HOWTO, available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. You might also want to read
  the comments at the top of drivers/scsi/aha152x.c. This driver is
  also available as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want). If you want to
  compile it as a module, say M here and read
  Documentation/modules.txt.

Adaptec AHA1542 support
CONFIG_SCSI_AHA1542
  This is support for a SCSI host adaptor. It is explained in section
  3.4 of the SCSI-HOWTO, available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  Note that Trantor was
  recently purchased by Adaptec, and some former Trantor products are
  being sold under the Adaptec name. If it doesn't work out of
  the box, you may have to change some settings in
  drivers/scsi/aha1542.h.  If you want to compile this as a module ( =
  code which can be inserted in and removed from the running kernel
  whenever you want), say M here and read Documentation/modules.txt.
 
Adaptec AHA1740 support
CONFIG_SCSI_AHA1740
  This is support for a SCSI host adaptor. It is explained in section
  3.5 of the SCSI-HOWTO, available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If it doesn't work out of
  the box, you may have to change some settings in
  drivers/scsi/aha1740.h. This driver is also available as a module (
  = code which can be inserted in and removed from the running kernel
  whenever you want). If you want to compile it as a module, say M
  here and read Documentation/modules.txt.

Adaptec AHA274X/284X/294X support
CONFIG_SCSI_AIC7XXX
  Information about this SCSI host adaptor is contained in
  drivers/scsi/README.aic7xxx and in the SCSI-HOWTO, available via ftp
  (user: anonymous) at sunsite.unc.edu:/pub/Linux/docs/HOWTO. If it
  doesn't work out of the box, you may have to change some settings in
  drivers/scsi/aic7xxx.h.  If you want to compile this as a module ( =
  code which can be inserted in and removed from the running kernel
  whenever you want), say M here and read Documentation/modules.txt.

BusLogic SCSI support
CONFIG_SCSI_BUSLOGIC
  This is support for BusLogic MultiMaster SCSI Host Adaptors.
  Consult the SCSI-HOWTO, available via anonymous ftp from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO and the file
  drivers/scsi/README.BusLogic for more information. BusLogic
  FlashPoint SCSI Host Adapters are not supported by this driver, but
  BusLogic has initiated an upgrade program which allows you to get a
  better adaptor for few $$. Read about it in
  drivers/scsi/README.FlashPoint.  If this driver does not work
  correctly without modification, please contact the author.  You can
  build this driver also as a module ( = code which can be inserted in
  and removed from the running kernel whenever you want), but only a
  single instance may be loaded. If you want to compile it as a
  module, say M here and read Documentation/modules.txt.

DTC3180/3280 SCSI support
CONFIG_SCSI_DTC3280
  This is support for DTC 3180/3280 SCSI Host Adaptors.  Please read
  the SCSI-HOWTO, available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO and the file
  drivers/scsi/README.dtc3x80.  This driver is also available as a
  module (= code which can be inserted in and removed from the running
  kernel whenever you want). If you want to compile it as a module,
  say M here and read Documentation/modules.txt.

EATA-DMA (DPT, NEC, AT&T, SNI, AST, Olivetti, Alphatronix) support
CONFIG_SCSI_EATA_DMA
  This is support for the EATA-DMA protocol compliant SCSI Host
  Adaptors like the SmartCache III/IV, SmartRAID controller families
  and the DPT PM2011B and PM2012B controllers.  Note that there is
  also another driver for the same hardware: "EATA ISA/EISA/PCI
  support". You should enable only one of them. Please read the
  SCSI-HOWTO, available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  This driver is also
  available as a module (= code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt.

EATA-PIO (old DPT PM2001, PM2012A) support
CONFIG_SCSI_EATA_PIO
  This driver supports all EATA-PIO protocol compliant SCSI Host
  Adaptors like the DPT PM2001 and the PM2012A. EATA-DMA compliant
  host adaptors could also use this driver but are discouraged from
  doing so, since this driver only supports harddisks and lacks
  numerous features.  You might want to have a look at the SCSI-HOWTO,
  available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If you want to compile this
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt.

UltraStor 14F/34F support
CONFIG_SCSI_U14_34F
  This is support for the UltraStor 14F and 34F SCSI-2 host adapters.
  The source at drivers/scsi/u14-34f.c contains some information about 
  this hardware. If the driver doesn't work out of the box, you may have 
  to change some settings in drivers/scsi/u14-34f.c.
  Read the SCSI-HOWTO, available via ftp (user: anonymous) at 
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. Note that there is also another
  driver for the same hardware: "UltraStor SCSI support", below.
  You should enable both only if you want 24F support as well. This
  driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

Future Domain 16xx SCSI support
CONFIG_SCSI_FUTURE_DOMAIN
  This is support for Future Domain's 16-bit SCSI host adaptors
  (TMC-1660/1680, TMC-1650/1670, TMC-3260, TMC-1610M/MER/MEX) and other
  adaptors based on the Future Domain chipsets (Quantum ISA-200S,
  ISA-250MG; Adaptec AHA-2920; and at least one IBM board).  It is
  explained in section 3.7 of the SCSI-HOWTO, available via ftp (user:
  anonymous) at sunsite.unc.edu:/pub/Linux/docs/HOWTO.  This driver is
  also available as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want). If you want to
  compile it as a module, say M here and read Documentation/modules.txt.

Generic NCR5380/53c400 SCSI support
CONFIG_SCSI_GENERIC_NCR5380
  This is the generic NCR family of SCSI controllers, not to be
  confused with the NCR 53c7 or 8xx controllers. It is explained in
  section 3.8 of the SCSI-HOWTO, available via ftp (user: anonymous)
  at sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If it doesn't work out of
  the box, you may have to change some settings in
  drivers/scsi/g_NCR5380.h. This driver is also available as a module
  ( = code which can be inserted in and removed from the running
  kernel whenever you want). If you want to compile it as a module,
  say M here and read Documentation/modules.txt.
 
Enable NCR53c400 extensions
CONFIG_SCSI_GENERIC_NCR53C400
  This enables certain optimizations for the NCR53c400 scsi cards. You
  might as well try it out. Note that this driver will only probe for
  the Trantor T130B in its default configuration; you might have to
  pass a command line option to the kernel at boot time if it doesn't
  detect your card. See the file drivers/scsi/README.g_NCR5380 for
  details. If you want to compile it as a module, say M here and read
  Documentation/modules.txt.

NCR5380/53c400 mapping method (use Port for T130B)
CONFIG_SCSI_G_NCR5380_PORT
  The NCR5380 and NCR53c400 SCSI controllers come in two varieties:
  port or memory mapped. You should know what you have. The most
  common card, Trantor T130B, uses port mapped mode.

NCR53c7,8xx SCSI support
CONFIG_SCSI_NCR53C7xx
  This is the 53c7 and 8xx NCR family of SCSI controllers, not to be
  confused with the NCR 5380 controllers. It is explained in section
  3.8 of the SCSI-HOWTO, available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. If it doesn't work out of the
  box, you may have to change some settings in
  drivers/scsi/53c7,8xx.h. This driver is also available as a module (
  = code which can be inserted in and removed from the running kernel
  whenever you want). If you want to compile it as a module, say M
  here and read Documentation/modules.txt.

always negotiate synchronous transfers
CONFIG_SCSI_NCR53C7xx_sync
  In general, this is good; however, it is a bit dangerous since there
  are some broken SCSI devices out there. Take your chances. Safe bet
  is N.

allow FAST-SCSI [10MHz]
CONFIG_SCSI_NCR53C7xx_FAST
  This will enable 10MHz FAST-SCSI transfers with your host
  adaptor. Some systems have problems with that speed, so it's safest
  to say N here.
 
allow DISCONNECT
CONFIG_SCSI_NCR53C7xx_DISCONNECT
  This enables the disconnect/reconnect feature of the NCR SCSI
  controller.  When this is enabled, a slow SCSI device will not lock
  the SCSI bus while processing a request, allowing simultaneous use
  of e.g. a SCSI hard disk and SCSI tape or CD-ROM drive, and
  providing much better performance when using slow and fast SCSI
  devices at the same time. Some devices, however, do not operate
  properly with this option enabled, and will cause your SCSI system
  to hang, which might cause a system crash.  The safe answer
  therefore is to say N.

NCR53C8XX SCSI support
CONFIG_SCSI_NCR53C8XX
  This is the BSD ncr driver adapted to linux for the NCR53C8XX family
  of PCI-SCSI controllers. This driver supports parity checking,
  tagged command queuing, fast scsi II transfer up to 10 MB/s with
  narrow scsi devices and 20 MB/s with wide scsi devices.
  Linux/i386 and Linux/Alpha are supported by this driver.
  Memory mapped io is currently untested under Linux/Alpha.
  Please read drivers/scsi/README.ncr53c8xx for more information.

synchronous data transfers frequency
CONFIG_SCSI_NCR53C8XX_SYNC
  SCSI-2 specifications allow scsi devices to negotiate a synchronous 
  transfer period of 25 nano-seconds or more.
  The transfer period value is 4 times the agreed transfer period.
  So, data can be transferred at a 10 MHz frequency, allowing 10
  MB/second throughput with 8 bits scsi-2 devices and 20 MB/second
  with wide16 devices.  This frequency can be used safely with
  differential devices but may cause problems with singled-ended
  devices.
  Specify 0 if you want to only use asynchronous data transfers.
  Otherwise, specify a value between 5 and 10.  Commercial O/Ses
  generally use 5 Mhz frequency for synchronous transfers.  It is a
  reasonable default value.
  However, a flawless singled-ended scsi bus supports 10 MHz data
  transfers.  Regardless the value chosen in the Linux configuration,
  the synchronous period can be changed after boot-up through the
  /proc/scsi file system. The generic command is:
      echo "setsync #target period" >/proc/scsi/ncr53c8xx/0
  Use a 25 ns period for 10 Mhz synchronous data transfers.
  If you don't know what to do now, go with the default.

use normal IO
CONFIG_SCSI_NCR53C8XX_IOMAPPED
  Warning! Under linux/Alpha only normal io has been currently tested.
  This option allows you to force the driver to use normal IO.
  Memory mapped IO has less latency than normal IO and works for most 
  Intel-based hardware.
  The normal answer therefore is N.

not allow targets to disconnect
CONFIG_SCSI_NCR53C8XX_NO_DISCONNECT
  This option is only provided for safety if you suspect some scsi
  device of yours to not support properly the target-disconnect
  feature. In that case, you would say Y here. In general however, to
  not allow targets to disconnect is not reasonable if there is more
  than 1 device on a scsi bus.  The normal answer therefore is N.

enable tagged command queuing
CONFIG_SCSI_NCR53C8XX_TAGGED_QUEUE
  This option allows you to enable tagged command queuing support at
  linux start-up.  Some scsi devices do not properly support this
  feature.  The suggested method is to say N here and to use the
  "settags" control command after boot-up to enable this feature:
      echo "settags 2 4" >/proc/scsi/ncr53c8xx/0
  asks the driver to use up to 4 concurrent tagged commands for target
  2 of controller 0.
  See the file drivers/scsi/README.ncr53c8xx for more information.
  WARNING! If you say Y here, then you have to say N to "not allow
  targets to disconnect", above.
  The safe answer therefore is N.
  The normal answer therefore is Y.

maximum number of queued commands
CONFIG_SCSI_NCR53C8XX_MAX_TAGS
  This option allows you to specify the maximum number of commands
  that can be queued to a device, when tagged command queuing is
  possible.  The default value is 4. Minimum is 2, maximum is 12.  The
  normal answer therefore is the default one.

force asynchronous transfer mode
CONFIG_SCSI_NCR53C8XX_FORCE_ASYNCHRONOUS
  This option allows you to force asynchronous transfer mode for all
  SCSI devices at linux startup. You can enable synchronous
  negotiation with the "setsync" control command after boot-up, for
  example:
     echo "setsync 2 25" >/proc/scsi/ncr53c8xx/0
  asks the driver to set the period to 25 ns (10MB/sec) for target 2
  of controller 0 (please read drivers/scsi/README.ncr53c8xx for more
  information). The safe answer therefore is Y.  The normal answer
  therefore is N.

force synchronous negotiation
CONFIG_SCSI_NCR53C8XX_FORCE_SYNC_NEGO
  Some scsi-2 devices support synchronous negotiations but do not
  report this feature in byte 7 of inquiry data.
  Answer Y only if you suspect some device to be so humble.
  The normal answer therefore is N.
 
IBMMCA SCSI support
CONFIG_SCSI_IBMMCA
  If your computer sports an MCA bus system architecture (IBM PS/2)
  with an SCSI harddrive, say Y here.

disable master parity checking
CONFIG_SCSI_NCR53C8XX_DISABLE_MPARITY_CHECK
  Some hardware may have problems with parity during master cycles on
  PCI bus.  Only seen once. Answer Y if you suspect such problem.  The
  normal answer therefore is N.

disable scsi parity checking
CONFIG_SCSI_NCR53C8XX_DISABLE_PARITY_CHECK
  Parity on scsi bus is a system option. If one device checks parity,
  then all devices on the scsi bus must generate parity.  However, the
  parity can be ignored by the scsi devices.  Answer Y only if you
  know what you are doing.  The normal answer therefore is N.

Always IN2000 SCSI support
CONFIG_SCSI_IN2000
  This is support for an ISA bus SCSI host adaptor. You'll find
  more information in drivers/scsi/in2000.readme. If it doesn't
  work out of the box, you may have to change the jumpers for IRQ
  or address selection. If you want to compile this as a module 
  ( = code which can be inserted in and removed from the running
  kernel whenever you want), say M here and read 
  Documentation/modules.txt.

PAS16 SCSI support
CONFIG_SCSI_PAS16
  This is support for a SCSI host adaptor. It is explained in section
  3.10 of the SCSI-HOWTO, available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. If it doesn't work out of the
  box, you may have to change some settings in drivers/scsi/pas16.h.
 
Qlogic FAS SCSI support
CONFIG_SCSI_QLOGIC_FAS
  This driver works only with the ISA, VLB, and PCMCIA versions of the
  Qlogic FastSCSI! cards as well as any other card based on the FASXX
  chip (including the Control Concepts SCSI/IDE/SIO/PIO/FDC cards); it
  does NOT support the PCI version. The PCI versions are supported by
  the Qlogic ISP driver though.  Information about this driver is
  contained in drivers/scsi/README.qlogicfas.  You should also read
  the SCSI-HOWTO, available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt.

Qlogic ISP SCSI support (EXPERIMENTAL)
CONFIG_SCSI_QLOGIC_ISP
  This driver works for all QLogic PCI SCSI host adaptors (IQ-PCI,
  IQ-PCI-10, IQ_PCI-D) except for the PCI-basic card. (This latter
  card is supported by the "AM53/79C974 PCI SCSI" driver). If you say
  Y here, make sure to say Y to "PCI BIOS support" as well. More
  information is contained in the file
  drivers/scsi/README.qlogicisp. You should also read the SCSI-HOWTO,
  available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt.

Seagate ST-02 and Future Domain TMC-8xx SCSI support
CONFIG_SCSI_SEAGATE
  These are 8-bit SCSI controllers; the ST-01 is also supported by this
  driver.  It is explained in section 3.9 of the SCSI-HOWTO, available
  via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. If it doesn't work out of the
  box, you may have to change some settings in drivers/scsi/seagate.h.
  This driver is also available as a module ( = code which can be
  inserted in and removed from the running kernel whenever you
  want). If you want to compile it as a module, say M here and read
  Documentation/modules.txt.

Trantor T128/T128F/T228 SCSI support
CONFIG_SCSI_T128
  This is support for a SCSI host adaptor. It is explained in section
  3.11 of the SCSI-HOWTO, available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If it doesn't work out of
  the box, you may have to change some settings in
  drivers/scsi/t128.h. Note that Trantor was recently purchased by
  Adaptec, and some former Trantor products are being sold under the
  Adaptec name.

UltraStor SCSI support
CONFIG_SCSI_ULTRASTOR
  This is support for the UltraStor 14F, 24F and 34F SCSI-2 host
  adaptor family. This driver is explained in section 3.12 of the
  SCSI-HOWTO, available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. If it doesn't work out of the
  box, you may have to change some settings in
  drivers/scsi/ultrastor.h. If you want to compile this as a module (
  = code which can be inserted in and removed from the running kernel
  whenever you want), say M here and read Documentation/modules.txt.
  Note that there is also another driver for the same hardware:
  "UltraStor 14F/34F support", above.
 
7000FASST SCSI support
CONFIG_SCSI_7000FASST
  This driver supports the Western Digital 7000 SCSI host adaptor.
  Some information is in the source: drivers/scsi/wd7000.c.  This
  driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

EATA ISA/EISA/PCI (DPT and generic EATA/DMA-compliant boards) support
CONFIG_SCSI_EATA
  This driver supports all the EATA/DMA-compliant SCSI host adapters
  and does not need any BIOS32 service.
  DPT ISA and all EISA i/o addresses are probed looking for the "EATA"
  signature. If "PCI bios support" is enabled, the addresses of all
  the PCI SCSI controllers reported by BIOS32 are probed as well.
  Note that there is also another driver for the same hardware:
  "EATA-DMA support". You should enable only one of them.
  You want to read the start of drivers/scsi/eata.c and the
  SCSI-HOWTO, available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If you want to compile this
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt.

NCR53c406a SCSI support
CONFIG_SCSI_NCR53C406A
  This is support for the NCR53c406a SCSI host adapter. For user
  configurable parameters, check out drivers/scsi/NCR53c406.c in the
  kernel source. Also read the SCSI-HOWTO, available via ftp (user:
  anonymous) at sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If you want to
  compile this driver as a module ( = code which can be inserted in
  and removed from the running kernel whenever you want), say M here
  and read Documentation/modules.txt.

AM53/79C974 PCI SCSI support
CONFIG_SCSI_AM53C974
  This is support for the AM53/79C974 SCSI host adapters. Please read
  drivers/scsi/README.AM53C974 for details. Also, the SCSI-HOWTO,
  available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO, is for you. If you want to
  compile this driver as a module ( = code which can be inserted in
  and removed from the running kernel whenever you want), say M here
  and read Documentation/modules.txt.

IOMEGA Parallel Port ZIP drive SCSI support
CONFIG_SCSI_PPA
  This driver supports the parallel port version of IOMEGA's ZIP drive
  (a 100Mb removable media device).  For more information about this
  driver and how to use it you should read the file
  drivers/scsi/README.ppa.  You should also read the SCSI-HOWTO, which
  is available via anonymous ftp from sunsite.unc.edu in the directory
  /pub/Linux/docs/HOWTO.  This driver is also available as a module
  which can be inserted in and removed from the running kernel
  whenever you want. If you want to use any two of a parallel port ZIP
  drive, a parallel printer or PLIP on the same parallel port, you
  should compile the drivers as modules and only insert them as
  needed. To compile this driver as a module, say M here and read
  Documentation/modules.txt. Note that you can say N here if you have
  the SCSI version of the ZIP drive: it will be supported
  automatically if you enabled the generic "SCSI disk support", above.

Network device support?
CONFIG_NETDEVICES
  You can say N here in case you don't intend to connect to any other
  computer at all or all your connections will be either via UUCP
  (UUCP is a protocol to forward mail and news between unix hosts over
  telephone lines; read the UUCP-HOWTO, available via ftp (user:
  anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO) or dialing up a
  shell account or a BBS, even using term (term is a program which
  gives you almost full Internet connectivity if you have a regular
  dial up shell account on some Internet connected Unix computer. Read
  the Term-HOWTO).  You'll have to say Y if your computer contains a
  network card that you want to use under linux (make sure you know
  its name because you will be asked for it and read the
  Ethernet-HOWTO; also, if you plan to use more than one network card
  under linux, read the Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini) or if you want to use
  SLIP (Serial Line Internet Protocol is the protocol used to send
  Internet traffic over telephone lines or nullmodem cables) or CSLIP
  (compressed SLIP) or PPP (better and newer variant of SLIP) or PLIP
  (Parallel Line Internet Protocol is mainly used to create a mini
  network by connecting the parallel ports of two local machines) or
  AX.25/KISS (protocol for sending internet traffic over radio links).
  Make sure to read the NET-2-HOWTO.  Eventually, you will have to
  read Olaf Kirch's excellent book "Network Administrator's Guide", to
  be found in sunsite.unc.edu:/pub/Linux/docs/LDP.  If unsure, say Y.

CONFIG_NET_ETHERNET
  Ethernet is the most common protocol used on Local Area Networks
  (LANs) in universities or companies. 10-base-2 and 10-base-T and
  100-base-<whatever> are common types of ethernet. If your Linux
  machine will be connected to an Ethernet and you have an ethernet
  network card installed in your computer, say Y here and read the
  Ethernet-HOWTO, available via ftp (user: anonymous) from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  Note that the answer to this
  question won't directly affect the kernel: saying N will just cause
  this configure script to skip all the questions about Ethernet
  network cards. If unsure, say N.

Dummy net driver support
CONFIG_DUMMY
  This is essentially a bit-bucket device (i.e. traffic you send to
  this device is consigned into oblivion) with a configurable IP
  address. It is most commonly used in order to make your currently
  inactive SLIP address seem like a real address for local
  programs. If you use SLIP or PPP, you might want to enable it. Read
  about it in the Network Administrator's Guide, available via ftp
  (user: anonymous) from sunsite.unc.edu:/pub/Linux/docs/LDP. Since
  this thing comes often handy, the default is Y. It won't enlarge
  your kernel either. What a deal.  If you want to compile this as a
  module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt. If you want to use more than one dummy
  device at a time, you need to compile it as a module. Instead of
  'dummy', it will they will then be called 'dummy0', 'dummy1' etc.
  
SLIP (serial line) support
CONFIG_SLIP
  Say Y if you intend to use SLIP or CSLIP (compressed SLIP) to
  connect to your Internet service provider or to connect to some
  other local Unix box or if you want to configure your Linux box as a
  Slip/CSlip server for other people to dial in.  SLIP (Serial Line
  Internet Protocol) is the protocol used to send Internet traffic
  over telephone lines or serial cables (also known as
  nullmodems). Normally, your access provider has to support SLIP in
  order for you to be able to use it, but there is now a SLIP emulator
  called SLiRP around (available via ftp (user: anonymous) from
  sunsite.unc.edu:/pub/Linux/system/Network/serial/) which allows you
  to use SLIP over a regular dial up shell connection. If you plan to
  use SLiRP, make sure to say Y to CSLIP, below. The NET-2-HOWTO,
  available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO, explains how to configure
  SLIP. Note that you don't need this option if you just want to run
  term (term is a program which gives you almost full Internet
  connectivity if you have a regular dial up shell account on some
  Internet connected Unix computer. Read the Term-HOWTO). SLIP support
  will enlarge your kernel by about 4kB. If unsure, say N.  If you
  want to compile this as a module ( = code which can be inserted in
  and removed from the running kernel whenever you want), say M here
  and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt.
  
CSLIP compressed headers
CONFIG_SLIP_COMPRESSED
  This protocol is faster than SLIP because it uses compression on the
  TCP/IP headers (not on the data itself), but it has to be supported
  on both ends. Ask your access provider if you are not sure and say
  Y, just in case. You will still be able to use plain SLIP. If you
  plan to use SLiRP, the SLIP emulator (available via ftp (user:
  anonymous) from sunsite.unc.edu:/pub/Linux/system/Network/serial/)
  which allows you to use SLIP over a regular dial up shell
  connection, you definitely want to say Y here. The NET-2-HOWTO,
  available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO, explains how to configure
  CSLIP. This won't enlarge your kernel.

Keepalive and linefill
CONFIG_SLIP_SMART
  Adds additional capabilities to the SLIP driver to support the
  RELCOM line fill and keepalive monitoring. Ideal on poor quality
  analogue lines.

Six bit SLIP encapsulation
CONFIG_SLIP_MODE_SLIP6
  Just occasionally you may need to run IP over hostile serial
  networks that don't pass all control characters or are only seven
  bit. Saying Y here adds an extra mode you can use with SLIP:
  "slip6". In this mode, SLIP will only send normal ascii symbols over
  the serial device. Naturally, this has to be supported at the other
  end of the link as well. It's good enough, for example, to run IP
  over the async ports of a Camtec JNT Pad. If unsure, say N.

Radio network interfaces
CONFIG_NET_RADIO
  Radio based interfaces for Linux. This includes amateur radio
  (AX.25), support for wireless ethernet and other systems. Note that
  the answer to this question won't directly affect the kernel:
  saying N will just cause this configure script to skip all the
  questions about radio interfaces. Some user-level drivers for scarab
  devices which don't require special kernel support are available via
  ftp (user: anonymous) from shadow.cabi.net. If unsure, say N.

PPP (point-to-point) support
CONFIG_PPP
  PPP (Point to Point Protocol) is a newer and better SLIP. It serves
  the same purpose: sending Internet traffic over telephone (and other
  serial) lines.  Ask your access provider if they support it, because
  otherwise you can't use it (not quite true any more: the free
  program SLiRP can emulate a PPP line if you just have a regular dial
  up shell account on some UNIX computer; get it via ftp (user:
  anonymous) from sunsite.unc.edu:/pub/Linux/system/Network/serial/).
  To use PPP, you need an additional program called pppd as described
  in Documentation/networking/ppp.txt and in the PPP-HOWTO, available
  from sunsite.unc.edu:/pub/Linux/docs/HOWTO. Note that you don't need
  this option if you just want to run term (term is a program which
  gives you almost full Internet connectivity if you have a regular
  dial up shell account on some Internet connected UNIX computer. Read
  the Term-HOWTO). The PPP option enlarges your kernel by about
  16kB. This driver is also available as a module ( = code which can
  be inserted in and removed from the running kernel whenever you
  want). If you said Y to "Version information on all symbols" above,
  then you cannot compile the PPP driver into the kernel; you can only
  compile it as a module. If you want to compile it as a module, say M
  here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. Note that, no matter what
  you do, the BSD compression code (used to compress the IP packets
  sent over the serial line; has to be supported at the other end as
  well) can only be compiled as a module; it is called bsd_comp.o and
  will show up in the directory modules once you have said "make
  modules". If unsure, say N.

STRIP (Metricom Starmode radio IP)
CONFIG_STRIP
  Say Y if you have a Metricom radio and intend to use Starmode Radio
  IP.  STRIP is a radio protocol developed for the MosquitoNet project
  (http://mosquitonet.stanford.edu/) to send Internet traffic using
  Metricom radios.  Metricom radios are small, battery powered,
  100kbit/sec packet radio transceivers, about the size and weight of
  a cellular telephone.  (You may also have heard them called
  "Metricom modems" but we avoid the term "modem" because it misleads
  many people into thinking that you can plug a Metricom modem into a
  phone line and use it as a modem.)  You can use STRIP on any Linux
  machine with a serial port, although it is obviously most useful for
  people with laptop computers. If you think you might get a Metricom
  radio in the future, there is no harm in saying Y to STRIP now,
  except that it makes the kernel a bit bigger. You can also compile
  this as a module ( = code which can be inserted in and removed from
  the running kernel whenever you want), say M here and read
  Documentation/modules.txt.

WIC (Radio IP bridge)
CONFIG_WIC
  Support for the WIC parallel port radio bridge. You'll probably want
  to say N.  If you want to compile this driver as a module though ( =
  code which can be inserted in and removed from the running kernel
  whenever you want), say M here and read Documentation/modules.txt.

Z8530 SCC driver for AX.25
CONFIG_SCC
  These cards are used to connect your Linux box to an amateur radio
  in order to communicate with other computers.  If you want to use
  this, read Documentation/networking/z8530drv.txt and the AX.25-HOWTO,
  available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  Also make sure to say Y to
  "Amateur Radio AX.25 Level 2" support. If you want to compile this
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt.

BAYCOM ser12 and par96 driver for AX.25
CONFIG_BAYCOM
  This is an experimental driver for Baycom style simple amateur radio
  modems that connect to either a serial interface or a parallel
  interface. The driver supports the ser12 and par96 designs. To
  configure the driver, use the sethdlc utility available
  in the standard ax25 utilities package. For information on the modems,
  see http://www.baycom.de and drivers/net/README.baycom.
  If you want to compile this as a module ( = code which can be
  inserted in and removed from the running kernel whenever you want),
  say M here and read Documentation/modules.txt. This is recommended.

Soundcard modem driver for AX.25
CONFIG_SOUNDMODEM
  This experimental driver allows a standard SoundBlaster or 
  WindowsSoundSystem compatible soundcard to be used as a packet radio
  modem. To configure the driver, use the sethdlc, smdiag and smmixer
  utilities available in the standard ax25 utilities package. For
  informations on how to key the transmitter, see
  http://www.ife.ee.ethz.ch/~sailer/pcf/ptt_circ/ptt.html and
  drivers/net/README.soundmodem. If you want to compile this as a
  module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt. This is recommended.

Soundcard modem support for SoundBlaster and compatible cards
CONFIG_SOUNDMODEM_SBC
  This option enables the soundmodem driver to use SoundBlaster
  and compatible cards. Dual mode cards (i.e. WSS cards with a
  SoundBlaster emulation) should be used in WSS mode because
  this results in usually better performance.

Soundcard modem support for WSS and Crystal cards
CONFIG_SOUNDMODEM_WSS
  This option enables the soundmodem driver to use WindowsSoundSystem
  compatible cards. These cards feature a codec chip from either
  Analog Devices (such as AD1848, AD1845, AD1812) or Crystal Semiconductors
  (such as CS4248, CS423x). This option also supports the WSS full duplex
  operation which currently works with Crystal CS423x chips. If you don't
  need full duplex operation, do not enable it to save performance.

Soundcard modem support for 1200 baud AFSK modulation
CONFIG_SOUNDMODEM_AFSK1200
  This option enables the soundmodem driver 1200 baud AFSK modem, 
  compatible to popular modems using TCM3105 or AM7911. The demodulator
  requires about 12% of the CPU power of a Pentium 75 CPU per channel.

Soundcard modem support for 1200 baud AFSK modulation
CONFIG_SOUNDMODEM_AFSK1200_FP
  This option enables floating point calculations to be used for the
  AFSK1200 baud modem. The Intel Pentium is a perverted chip because
  integer multiplications are, altough easier to implement in silicon,
  an order of a magnitude slower than floating point calculations.
  Enabling this option uses a highly optimized assembler routine for
  correlations, modelled after the one published by Phil Karn, KA9Q.
  This reduces the computing power needed on Intel Pentium chips to about
  50%. On the other hand, Pentium clones with faster integer multiply and
  slower floating point multiply will probably take longer with this
  option turned on. As a rule of thumb, enable it for Intel Pentium and
  Pentium Pro processors, and disable it for anything else.
  I (sailer@ife.ee.ethz.ch) am very interested in figures. If you are
  willing to give me a feedback, please compile the driver once with this
  option enabled and once with it disabled, and send me the cycle counter
  numbers obtained with both compilations, and your exact chip. The cycle
  counter numbers can be optained by a recent sethdlc utility.

Soundcard modem support for 9600 baud FSK G3RUH modulation
CONFIG_SOUNDMODEM_FSK9600
  This option enables the soundmodem driver 9600 baud FSK modem,
  compatible to the G3RUH standard. The demodulator requires about 4%
  of the CPU power of a Pentium 75 CPU per channel.

Serial port KISS driver for AX.25
CONFIG_MKISS
  KISS is the protocol used to send IP traffic over AX.25 radio
  connections, somewhat similar to SLIP for telephone lines. Say Y
  here if you intend to send internet traffic over amateur radio,
  using some device connected to your machine's serial port. In that
  case, you also have to say Y to "Amateur Radio AX.25 Level 2"
  support.  If you want to compile this driver as a module ( = code
  which can be inserted in and removed from the running kernel
  whenever you want), say M here and read Documentation/modules.txt.

PLIP (parallel port) support
CONFIG_PLIP
  PLIP (Parallel Line Internet Protocol) is used to create a mini
  network consisting of two (or, rarely, more) local machines. The
  parallel ports (the connectors at the computers with 25 holes) are
  connected using "null printer" or "Turbo Laplink" cables which can
  transmit 4 bits at a time or using special PLIP cables, to be used
  on bidirectional parallel ports only, which can transmit 8 bits at a
  time (you can find the wiring of these cables in
  drivers/net/README?.plip). The cables can be up to 15m long. This
  works also if one of the machines runs DOS/Windows and has some PLIP
  software installed, e.g. the Crynwr PLIP packet driver
  (http://sunsite.cnam.fr/packages/Telnet/PC/msdos/misc/pktdrvr.txt)
  and winsock or NCSA's telnet.  If you want to use this, say Y and
  read the PLIP mini-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini as well as the
  NET-2-HOWTO in sunsite.unc.edu:/pub/Linux/docs/HOWTO. Note that the
  PLIP protocol was changed and this PLIP driver won't work together
  with the PLIP support in Linux versions 1.0.x.  This option enlarges
  your kernel by about 8kB. If you want to compile this as a module (
  = code which can be inserted in and removed from the running kernel
  whenever you want), say M here and read Documentation/modules.txt as
  well as Documentation/networking/net-modules.txt. If you want to use
  both a parallel printer and PLIP, there are two cases: 1) If the
  printer and the PLIP cable are to use the same parallel port
  (presumably because you have just one), it is best to compile both
  drivers as modules and load and unload them as needed. 2) To use
  different parallel ports for the printer and the PLIP cable, you can
  say Y to the printer driver, specify the base address of the
  parallel port(s) to use for the printer(s) with the "lp" kernel
  command line option. (See the documentation of your boot loader
  (lilo or loadlin) about how to pass options to the kernel at boot
  time. The lilo procedure is also explained in the SCSI-HOWTO,
  available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.) The standard base addresses
  as well as the syntax of the "lp" command line option can be found
  in drivers/char/lp.c. You can then say Y to this PLIP driver or,
  preferably, M in which case Documentation/networking/net-modules.txt
  tells you how to specify the port and IRQ to be used by PLIP at
  module load time.
  It's safe to say N here.

EQL (serial line load balancing) support
CONFIG_EQUALIZER
  If you have two serial connections to some other computer (this
  usually requires two modems and two telephone lines) and you use
  SLIP (= the protocol for sending internet traffic over telephone
  lines) or PPP (= a better SLIP) on them, you can make them behave
  like one double speed connection using this driver. Naturally, this
  has to be supported at the other end as well, either with a similar
  EQL Linux driver or with a Livingston Portmaster 2e. Say Y if you
  want this and read drivers/net/README.eql. This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt.

Frame Relay (DLCI) support
CONFIG_DLCI
  This is support for the frame relay protocol; frame relay is a fast
  low-cost way to connect to a remote internet access provider or to
  form a private wide area network. The one physical line from your
  box to the local "switch" (i.e. the entry point to the frame relay
  network, usually at the phone company) can carry several logical
  point-to-point connections to other computers connected to the frame
  relay network. For a general explanation of the protocol, check out
  http://frame-relay.indiana.edu/4000/4000index.html on the WWW. (To
  browse the WWW, you need to have access to a machine on the Internet
  that has one of the programs lynx, netscape or Mosaic.) To use frame
  relay, you need supporting hardware (FRAD) and certain programs from
  the net-tools package as explained in
  Documentation/networking/framerelay.txt. This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt.

Max open DLCI
CONFIG_DLCI_COUNT 
  This is the maximal number of logical point-to-point frame relay
  connections (the identifiers of which are called DCLIs) that
  the driver can handle. The default is probably fine.

Max DLCI per device
CONFIG_DLCI_MAX
  You can specify here how many logical point-to-point frame relay
  connections (the identifiers of which are called DCLIs) should be
  handled by each of your hardware frame relay access devices. Go with
  the default.

Sangoma S502A FRAD support
CONFIG_SDLA
  Say Y here if you need a driver for the Sangoma S502A, S502E, and
  S508 Frame Relay Access Devices. These are multi-protocol
  cards, but only frame relay is supported by the driver at this
  time. Please read Documentation/framerelay.txt. This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt.

Sun LANCE Ethernet support
CONFIG_SUN_LANCE
  This is support for lance ethernet cards on Sun workstations such as
  the Sparcstation IPC (any Sparc with a network interface 'le0' under
  SunOS basically).

Sun Intel Ethernet support
CONFIG_SUN_INTEL
  This is support for the intel ethernet cards on some Sun workstations
  (all those with a network interface 'ie0' under SunOS).

Ethernet (10 or 100Mbit)
CONFIG_NET_ETHERNET
  Ethernet is a widely used protocol on local area networks. If you
  have a ethernet card in your computer and want to use it under
  Linux, say Y here. Note that the answer to this question doesn't
  directly affect the kernel: saying N will just cause this configure
  script to skip all the questions about ethernet card drivers.

Western Digital/SMC cards
CONFIG_NET_VENDOR_SMC
  If you have a network (ethernet) card belonging to this class, say Y
  and read the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. If you plan to use more than
  one network card under linux, read the Multiple-Ethernet-mini-HOWTO,
  available from sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini. Note that
  the answer to this question doesn't directly affect the kernel:
  saying N will just cause this configure script to skip all the
  questions about Western Digital cards. If you say Y, you will be
  asked for your specific card in the following questions. If you plan
  to use more than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

WD80*3 support
CONFIG_WD80x3
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

SMC Ultra support
CONFIG_ULTRA
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt as
  well as Documentation/networking/net-modules.txt. If you plan to use
  more than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.
  Important: There have been many reports that, with some motherboards
  mixing an SMC Ultra and an Adaptec AHA1542 SCSI card causes corruption
  problems with many operating systems.

SMC 9194 Support
CONFIG_SMC9194
  This is support for the SMC9xxx based Ethernet cards.  Choose this
  option if you have a DELL laptop with the docking station, or
  another SMC9192/9194 based chipset.  Say Y if you want it compiled
  into the kernel, and read the the file drivers/net/README.smc9 and
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt as
  well as Documentation/networking/net-modules.txt. If you plan to use
  more than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

AMD LANCE and PCnet (AT1500 and NE2100) support
CONFIG_LANCE
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. If you plan to use more than
  one network card under linux, read the Multiple-Ethernet-mini-HOWTO,
  available from sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

3COM cards
CONFIG_NET_VENDOR_3COM
  If you have a network (ethernet) card belonging to this class, say Y
  and read the Ethernet-HOWTO, available via ftp (user: anonymous)
  in sunsite.unc.edu:/pub/Linux/docs/HOWTO. Note that the answer to
  this question doesn't directly affect the kernel: saying N will just
  cause this configure script to skip all the questions about 3COM
  cards. If you say Y, you will be asked for your specific card in the
  following questions. If you plan to use more than one network card
  under linux, read the Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini. 

3c501 support
CONFIG_EL1
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  Also, consider buying a new
  card, since the 3c501 is slow and obsolete. This driver is also 
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt as well
  as Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the 
  Multiple-Ethernet-mini-HOWTO, available from 
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini - and don't use 3c501s.

3c503 support
CONFIG_EL2
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

3c505 support
CONFIG_ELPLUS
  Information about this network (ethernet) card can be found in
  Documentation/networking/3c505.txt. If you have a card of this type,
  say Y and read the Ethernet-HOWTO, available via ftp (user:
  anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If you want to
  compile this as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want), say M here and
  read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

3c507 support
CONFIG_EL16
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

3c523 support CONFIG_ELMC
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

3c509/3c579 support
CONFIG_EL3
  If you have a network (ethernet) card belonging to the 3Com
  EtherLinkIII series, say Y and read the Ethernet-HOWTO, available
  via ftp (user: anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO.
  If you want to compile this as a module ( = code which can be
  inserted in and removed from the running kernel whenever you want),
  say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini. If your card is not
  working you may need to use the DOS setup disk to disable Plug &
  Play mode, and to select the default media type.

3c590 series (592/595/597) "Vortex" support
CONFIG_VORTEX
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. More specific information is
  in Documentation/networking/vortex.txt and in the comments at the
  beginning of drivers/net/3c59x.c. If you want to compile this
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini

Other ISA cards
CONFIG_NET_ISA
  If your network (ethernet) card hasn't been mentioned yet and its
  bus system (that's the way the components of the card talk to each
  other) is ISA (as opposed to EISA, VLB or PCI), say Y. Make sure you
  know the name of your card. Read the Ethernet-HOWTO, available via
  ftp (user: anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO. If
  unsure, say Y.  Note that the answer to this question doesn't
  directly affect the kernel: saying N will just cause this configure
  script to skip all the remaining ISA network card questions.  If you
  say Y, you will be asked for your specific card in the following
  questions.  If you plan to use more than one network card under
  linux, read the Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

ARCnet support
CONFIG_ARCNET
  If you have a network card of this type, say Y and check out the
  (arguably) beautiful poetry in Documentation/networking/arcnet.txt. 
  You might also want to have a look at the Ethernet-HOWTO, available
  via ftp (user: anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO
  (even though ARCnet is not really ethernet). This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile it
  as a module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.
  
Enable arc0e (ARCnet "ether-encap" packet format)
CONFIG_ARCNET_ETH
  This allows you to use "ethernet encapsulation" with your ARCnet card
  via the virtual arc0e device.  You only need arc0e if you want to
  talk to nonstandard ARCnet software, specifically, DOS/Windows-style
  "NDIS" drivers.  You do not need to enable this option to communicate
  with industry-standard RFC1201 implementations, like the arcether.com
  packet driver or most DOS/Windows ODI drivers.  RFC1201 is included
  automatically as the arc0 device.  Please read the ARCnet
  documentation in Documentation/networking/arcnet.txt for more
  information about using arc0e and arc0s.

Enable arc0s (ARCnet RFC1051 packet format)
CONFIG_ARCNET_1051
  This allows you to use RFC1051 with your ARCnet card via the virtual
  arc0s device.  You only need arc0s if you want to talk to ARCnet
  software complying with the "old" standard, specifically, the DOS
  arcnet.com packet driver, Amigas running AmiTCP, and some variants of
  NetBSD.  You do not need to enable this option to communicate with
  industry-standard RFC1201 implementations, like the arcether.com
  packet driver or most DOS/Windows ODI drivers.  RFC1201 is included
  automatically as the arc0 device.  Please read the ARCnet
  documentation in Documentation/networking/arcnet.txt for more
  information about using arc0e and arc0s.

Cabletron E21xx support
CONFIG_E2100
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

DEPCA support
CONFIG_DEPCA
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO as well as
  drivers/net/depca.c.  If you want to compile this as a module ( =
  code which can be inserted in and removed from the running kernel
  whenever you want), say M here and read Documentation/modules.txt as
  well as Documentation/networking/net-modules.txt. If you plan to use
  more than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

EtherWorks 3 support
CONFIG_EWRK3
  This driver supports the DE203, DE204 and DE205 network (ethernet)
  cards. If this is for you, say Y and read drivers/net/README.ewrk3
  in the kernel source as well as the Ethernet-HOWTO, available via
  ftp (user: anonymous) from sunsite.unc.edu:/pub/Linux/docs/HOWTO.
  If you want to compile this as a module ( = code which can be
  inserted in and removed from the running kernel whenever you want),
  say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

SEEQ8005 support
CONFIG_SEEQ8005
  This is a driver for the SEEQ 8005 network (ethernet) card. If this
  is for you, read the Ethernet-HOWTO, available via ftp (user:
  anonymous) from sunsite.unc.edu:/pub/Linux/docs/HOWTO. If you plan
  to use more than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

AT1700 support
CONFIG_AT1700
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

FMV-181/182/183/184 support
CONFIG_FMV18X
  If you have a Fujitsu FMV-181/182/183/184 network (ethernet) card,
  say Y and read the Ethernet-HOWTO, available via ftp (user: anonymous)
  in sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile it
  as a module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini. If you use FMV-183 or
  FMV-184 and it is not working, you may need to disable Plug & Play
  mode of the card.

EtherExpressPro support
CONFIG_EEXPRESS_PRO
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

EtherExpress support
CONFIG_EEXPRESS
  If you have an EtherExpress16 network (ethernet) card, say Y and
  read the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. Note that the Intel
  EtherExpress16 card used to be regarded as a very poor choice
  because the driver was very unreliable. We now have a new driver
  that should do better. If you want to compile this driver as a
  module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

NI5210 support
CONFIG_NI52
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. If you plan to use more than
  one network card under linux, read the Multiple-Ethernet-mini-HOWTO,
  available from sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

NI6510 support
CONFIG_NI65
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. If you want to compile it as
  a module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

Ottawa PI and PI/2 support
CONFIG_PI
  This is a driver for the Ottawa Amateur Radio Club PI and PI2 cards,
  which are commonly used to send internet traffic over amateur radio. 
  More information about these cards is on the WWW at
  http://hydra.carleton.ca/info/pi2.html (To browse the WWW, you need
  to have access to a machine on the Internet that has one of the
  programs lynx, netscape or Mosaic). If you have one of these cards,
  you can say Y here and should read the HAM-HOWTO, available via ftp
  (user: anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO. Also,
  you should have said Y to "AX.25 support" above, because AX.25 is
  the protocol used for digital traffic over radio links. If you want
  to compile this as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want), say M here and
  read Documentation/modules.txt.

Gracilis PackeTwin support
CONFIG_PT
  This is a card used mainly by amateur radio operators for packet
  radio.  You should have already said Y to "AX.25 support" as this
  card uses that protocol.  More information about this driver can be
  found in the file drivers/net/README.pt.  NOTE: The card is capable
  of DMA and full duplex but neither of these have been coded in the
  driver as yet.  This driver is also available as a module ( = code
  which can be inserted in and removed from the running kernel
  whenever you want). If you want to compile it as a module, say M
  here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt.

WaveLAN support
CONFIG_WAVELAN
  These are cards for wireless ethernet-like networking. Supported are
  AT&T GIS and NCR WaveLAN cards. If you want to use a card of this
  type under Linux, say Y and read the Ethernet-HOWTO, available via
  ftp (user: anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO. Some
  more specific information is contained in
  drivers/net/README.wavelan. This driver is also available as a
  module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

HP PCLAN+ (27247B and 27252A) support
CONFIG_HPLAN_PLUS
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

HP PCLAN (27245 and other 27xxx series) support
CONFIG_HPLAN
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

HP 10/100VG PCLAN (ISA, EISA, PCI) support
CONFIG_HP100
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If you want to compile this
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

NE2000/NE1000 support
CONFIG_NE2000
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

SK_G16 support
CONFIG_SK_G16
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. If you plan to use more than
  one network card under linux, read the Multiple-Ethernet-mini-HOWTO,
  available from sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

EISA, VLB, PCI and on board controllers
CONFIG_NET_EISA
  This is another class of network cards which attach directly to the
  bus. If you have one of those, say Y and read the Ethernet-HOWTO,
  available via ftp (user: anonymous) from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO; if you are unsure, say
  Y. Note that the answer to this question doesn't directly affect the
  kernel: saying N will just cause this configure script to skip all
  the questions about this class of network cards. If you say Y, you
  will be asked for your specific card in the following questions.  If
  you plan to use more than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

Ansel Communications EISA 3200 support
CONFIG_AC3200
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

Racal-Interlan EISA ES3210 support
CONFIG_ES3210
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

Apricot Xen-II on board ethernet
CONFIG_APRICOT
  If you have a network (ethernet) controller of this type, say Y and
  read the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If you want to compile this
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

DE425, DE434, DE435 support
CONFIG_DE4X5
  This is support for the DIGITAL series of PCI/EISA ethernet
  cards. These include the DE425, DE434, DE435, DE450 and DE500
  models. If you have a network card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  More specific information is
  contained in drivers/net/README.de4x5. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

DECchip Tulip (dc21x4x) PCI support
CONFIG_DEC_ELCP
  This driver is developed for the SMC EtherPower series ethernet
  cards and also works with cards based on the DECchip
  21040/21041/21140 (Tulip series) chips. (If your card is NOT SMC
  EtherPower 10/100 PCI (smc9332dst), you can also try the driver from
  "DE425, DE434, DE435 support", above.) However, most people with a
  network card of this type will say Y here. Do read the
  Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. More specific information is
  contained in Documentation/networking/tulip.txt. This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want).  If you want to compile
  it as a module, say M here and read Documentation/modules.txt as
  well as Documentation/networking/net-modules.txt.

Digi Intl. RightSwitch support
CONFIG_DGRS
  This is support for the Digi International RightSwitch series of
  PCI/EISA ethernet switch cards.  These include the SE-4 and the SE-6
  models. If you have a network card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  More specific information is
  contained in drivers/net/README.dgrs. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

ICL EtherTeam 16i/32 support
CONFIG_ETH16I
  If you have a network (ethernet) card of this type, say Y and read
  the Ethernet-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt as well as
  Documentation/networking/net-modules.txt. If you plan to use more
  than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

Zenith Z-Note support
CONFIG_ZNET
  The Zenith Z-Note notebook computer has a built-in network
  (ethernet) card, and this is the Linux driver for it. Note that the
  IBM Thinkpad 300 is compatible with the Z-Note and is also supported
  by this driver. Read the Ethernet-HOWTO, available via ftp (user:
  anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO.

Pocket and portable adaptors
CONFIG_NET_POCKET
  Cute little network (ethernet) devices which attach to the parallel
  port ("pocket adaptors"), commonly used with laptops. If you have
  one of those, say Y and read the Ethernet-HOWTO, available via ftp
  (user: anonymous) from sunsite.unc.edu:/pub/Linux/docs/HOWTO. If you
  want to plug a network card into the PCMCIA slot of your laptop
  instead (PCMCIA is the standard for credit card size extension cards
  used by all modern laptops), look in
  cb-iris.stanford.edu:/pub/pcmcia and say N here.  Note that the
  answer to this question doesn't directly affect the kernel: saying N
  will just cause this configure script to skip all the questions
  about this class of network devices.  If you say Y, you will be
  asked for your specific device in the following questions.  If you
  plan to use more than one network device under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini. If you intend to use an
  adaptor attaching to the parallel port as well as a parallel
  printer, you should compile both drivers as modules (if possible).

AT-LAN-TEC/RealTek pocket adaptor support
CONFIG_ATP
  This is a network (ethernet) device which attaches to your parallel
  port. Read drivers/net/atp.c as well as the Ethernet-HOWTO,
  available via ftp (user: anonymous) from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO if you want to use this. If
  you plan to use more than one network card under linux, read the
  Multiple-Ethernet-mini-HOWTO, available from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini. If you intend to use
  this driver, you should have said N to the Parallel Printer support,
  because the two drivers don't like each other.

D-Link DE600 pocket adaptor support
CONFIG_DE600
  This is a network (ethernet) device which attaches to your parallel
  port. Read drivers/net/README.DLINK as well as the Ethernet-HOWTO,
  available via ftp (user: anonymous) from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO if you want to use this.  If
  you want to compile this as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want), say M
  here and read Documentation/modules.txt. If you intend to use this
  pocket adaptor as well as a parallel printer, you should compile
  both drivers as modules. If you plan to use more than one network
  card under linux, read the Multiple-Ethernet-mini-HOWTO, available
  from sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.

D-Link DE620 pocket adaptor support
CONFIG_DE620
  This is a network (ethernet) device which attaches to your parallel
  port. Read drivers/net/README.DLINK as well as the Ethernet-HOWTO,
  available via ftp (user: anonymous) from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO if you want to use this.  If
  you want to compile this as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want), say M
  here and read Documentation/modules.txt. If you intend to use this
  pocket adaptor as well as a parallel printer, you should compile
  both drivers as modules. If you plan to use more than one network
  card under linux, read the Multiple-Ethernet-mini-HOWTO, available
  from sunsite.unc.edu:/pub/Linux/docs/HOWTO/mini.
 
Token Ring driver support
CONFIG_TR
  Token Ring is IBM's way of communication on a local network; the
  rest of the world uses ethernet. If you are connected to a token
  ring network and want to use your Token Ring card under Linux, say Y.
  Most people can say N here.

IBM Tropic chipset based adaptor support
CONFIG_IBMTR
  This is support for all IBM Token Ring cards that don't use DMA. If
  you have such a beast, say Y, otherwise N. Warning: this driver will
  almost definitely fail if more than one active Token Ring card is
  present. This driver is also available as a module ( = code which
  can be inserted in and removed from the running kernel whenever you
  want). If you want to compile it as a module, say M here and read
  Documentation/modules.txt.

Traffic Shaper (EXPERIMENTAL)
CONFIG_SHAPER
  The traffic shaper is a virtual network device that allows you to limit
  the rate of data flow over another device. See
  Documentation/networking/shaper.txt for more information.

FDDI driver support
CONFIG_FDDI
  Fiber Distributed Data Interface is a high speed local area network
  design; essentially a replacement for high speed ethernet. FDDI can
  run over copper or fiber. If you are connected to such a network and
  want a driver for the FDDI card in your computer, say Y here (and
  then also Y to the driver for your FDDI card, below). Most people
  will say N.

Digital DEFEA and DEFPA adapter support
CONFIG_DEFXX
  This is support for the DIGITAL series of EISA (DEFEA) and PCI
  (DEFPA) controllers which can connect you to a local FDDI network.

Support non-SCSI/IDE/ATAPI drives
CONFIG_CD_NO_IDESCSI
  If you have a CDROM drive that is neither SCSI nor IDE/ATAPI, say Y
  here, otherwise N. Read the CDROM-HOWTO, available via ftp (user:
  anonymous) from sunsite.unc.edu:/pub/Linux/docs/HOWTO. Note that the
  answer to this question doesn't directly affect the kernel: saying N
  will just cause this configure script to skip all the questions
  about these CDROM drives. If you are unsure what you have, say Y and
  find out whether you have one of the following drives.
  For each of these drivers, a file Documentation/cdrom/<driver_name>
  exists. Especially in cases where you do not know exactly which kind
  of drive you have you should read there.
  Most of these drivers use a file include/linux/<driver_name>.h where
  you can define your interface parameters and switch some internal
  goodies.
  All these CDROM drivers are also usable as a module (= code which can
  be inserted in and removed from the running kernel whenever you want).
  If you want to compile them as module, say M instead of Y and read
  Documentation/modules.txt.
  If you want to use any of these CDROM drivers, you also have to say
  Y to "ISO9660 cdrom filesystem support" below (this answer will get
  "defaulted" for you if you enable any of the Linux CDROM drivers).

Sony CDU31A/CDU33A CDROM support
CONFIG_CDU31A
  These CDROM drives have a spring-pop-out caddyless drawer, and a
  rectangular green LED centered beneath it.  NOTE: these CDROM drives
  will not be auto detected by the kernel at boot time; you have to
  provide the interface address as an option to the kernel at boot
  time as described in Documentation/cdrom/cdu31a or fill in your
  parameters into linux/drivers/cdrom/cdu31a.c. See the documentation
  of your boot loader (lilo or loadlin) about how to pass options to
  the kernel. The lilo procedure is also explained in the SCSI-HOWTO.

Standard Mitsumi [no XA/Multisession] CDROM support
CONFIG_MCD
  This is the older of the two drivers for the older Mitsumi models
  LU-005, FX-001 and FX-001D. This is not the right driver for the 
  FX-001DE and the triple or quad speed models (all these are IDE/ATAPI
  models).
  With the old LU-005 model, the whole drive chassis slides out for
  cd insertion.  The FX-xxx models use a motorized tray type mechanism.
  Note that this driver does not support XA or MultiSession CDs (PhotoCDs).
  There is a new driver (next question) which can do this. If you want
  that one, say N here.
  If the driver doesn't work out of the box, you might want to have
  a look at linux/include/linux/mcd.h.

Mitsumi [XA/MultiSession] support
CONFIG_MCDX
  Use this driver if you want to be able to read XA or MultiSession
  CDs (PhotoCDs) as well as ordinary CDs with your Mitsumi LU-005,
  FX-001 or FX-001D CDROM drive. In addition, this driver uses much less
  kernel memory than the old one, if that is a concern. This driver is
  able to support more than one drive, but each drive needs a separate
  interface card. Check out Documentation/cdrom/mcdx.

Matsushita/Panasonic/Creative, Longshine, TEAC CDROM support
CONFIG_SBPCD
  This driver supports most of the drives which use the Panasonic or
  SoundBlaster interface.
  The Matsushita CR-521, CR-522, CR-523, CR-562, CR-563 drives
  (sometimes labeled "Creative"), the CreativeLabs CD200, the
  Longshine LCS-7260, the "IBM External ISA CDROM" (in fact a CR-56x
  model), the TEAC CD-55A fall under this category. Some other
  "electrically compatible" drives (Vertos, Genoa, some Funai models)
  are currently not supported; for the Sanyo H94A drive currently a
  separate driver (asked later) is responsible.  Most drives have a
  uniquely shaped faceplate, with a caddyless motorized drawer, but
  without external brand markings. The older CR-52x drives have a
  caddy and manual loading/eject, but still no external markings.  The
  driver is able to do an extended auto-probing for interface
  addresses and drive types; this can help to find facts in cases you
  are not sure, but can consume some time during the boot process if
  none of the supported drives gets found.
  Once your drive got found, you should enter the reported parameters 
  into linux/include/linux/sbpcd.h and set "DISTRIBUTION 0" there.
  This driver can support up to four CDROM interface cards, and each
  card can support up to four CDROM drives; if you say Y here, you
  will be asked how many controllers you have. If compiled as a
  module, only one interface card (but with up to four drives) is
  usable.

Matsushita/Panasonic, ... second CDROM controller support
CONFIG_SBPCD2
  Say Y here only if you have two CDROM controller boards of this type
  (usually only if you have more than four drives). You should enter
  the parameters for the second, third and fourth interface card into
  linux/include/linux/sbpcd.h before compiling the new kernel.

Aztech/Orchid/Okano/Wearnes/TXC/CyDROM  CDROM support
CONFIG_AZTCD
  This is your driver if you have an Aztech CDA268-01A, Orchid
  CD-3110, Okano or Wearnes CDD110, Conrad TXC, or CyCDROM CR520 or
  CR540 CDROM drive.  This driver - just like all these CDROM drivers
  - is NOT for CDROM drives with IDE/ATAPI interface, such as Aztech
  CDA269-031SE.

Sony CDU535 CDROM support
CONFIG_CDU535
  This is the driver for the older Sony CDU-535 and CDU-531 CDROM drives.

Goldstar R420 CDROM support
CONFIG_GSCD
  If this is your CDROM drive, say Y here.
  As described in linux/Documentation/cdrom/gscd, you might have to
  change a setting in the file include/linux/gscd.h before compiling
  the kernel.

MicroSolutions backpack CDROM support
CONFIG_BPCD
  MicroSolutions backpack CDROM is an external drive that connects to
  the parallel port.  The bpcd driver supports model 164550 (and perhaps
  other models).  Say Y if you have one of these, and read the
  file linux/Documentation/cdrom/bpcd.  If you have several different
  devices that will share a common parallel port, say M and build them
  as modules.

Philips/LMS CM206 CDROM support
CONFIG_CM206
  If you have a Philips/LMS CDROM drive cm206 in combination with a
  cm260 host adapter card, say Y here.

Optics Storage DOLPHIN 8000AT CDROM support
CONFIG_OPTCD
  This is the driver for the 'DOLPHIN' drive with a 34-pin Sony
  compatible interface. It also works with the Lasermate CR328A. If
  you have one of those, say Y. This driver does not work for the
  Optics Storage 8001 drive; use the IDE-ATAPI CDROM driver for that
  one. 

Sanyo CDR-H94A CDROM support
CONFIG_SJCD
  If this is your CDROM drive, say Y here. Command line option
  (or 'append=' option in /etc/lilo.conf) is:
                sjcd=<port>
  Here 'port' is the base i/o address used by the drive. It defaults
  to port=0x340.

Soft configurable cdrom interface card support
CONFIG_CDI_INIT
  If you want to include boot-time initialization of any cdrom
  interface card that is software configurable, say Y here.
  Currently only the ISP16/MAD16/Mozart cards are supported.

ISP16/MAD16/Mozart soft configurable cdrom interface support
CONFIG_ISP16_CDI
  If you want any of these cdrom interface cards based on the
  OPTi 82C928 or 82C929 chips get detected and possibly configured
  at boot time, please say Y. Boot time command line options (or
  'append=' options in /etc/lilo.conf) are:
                isp16=<port>,<irq>,<dma>,<drive_type>
  Here 'port','irq' and 'dma' are the base i/o address, irq number and
  dma line assumed to be used by the attached cdrom
  drive. 'drive_type' is the type of cdrom drive or its emulation
  mode. Valid values for drive_type include: Sanyo, Panasonic (same as
  Sanyo), Sony and Mitsumi.  Default values are: port=0x340, irq=0,
  dma=0, drive_type=Sanyo.
  The command line
                isp16=noisp16
  will skip detection and configuration after all.
  N.B. options are case sensitive. 
  Read Documentation/cdrom/isp16 for details. 

Quota support
CONFIG_QUOTA
  If you say Y here, you will be able to set per user limits for disk
  usage (also called diskquotas). Currently, it works only for the
  ext2 filesystem. You need additional software in order to use quota
  support; it is available via ftp (user: anonymous) from
  ftp.funet.fi/pub/Linux/kernel/src/subsystems/quota/. Probably the
  quota support is only useful for multi user systems. If unsure, say
  N.

Minix fs support
CONFIG_MINIX_FS
  Minix is a simple operating system used in many classes about
  OS's. The minix filesystem (= method to organize files on a harddisk
  partition or a floppy disk) was the original filesystem for Linux,
  has been superseded by the second extended filesystem ext2fs but is
  still used for root/boot and other floppies or ram disks since it is
  leaner. You don't want to use it on your harddisk because of certain
  built-in restrictions. This option will enlarge your kernel by about
  25 kB. Everyone should say Y or M so that they are able to read this
  common floppy format.  If you want to compile this as a module
  ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt. Note that the filesystem of your root
  partition cannot be compiled as a module.

Extended fs support
CONFIG_EXT_FS
  This is the old Linux filesystem (= method to organize files on a
  harddisk partition or a floppy disk) and not in use anymore. It
  enlarges your kernel by about 25 kB. Let's all kill this beast. Say
  N.

Second extended fs support
CONFIG_EXT2_FS
  This is the de facto standard Linux filesystem (= method to organize
  files on a storage device) for harddisks. You want to say Y, unless
  you intend to use Linux exclusively from inside a DOS partition
  using the umsdos filesystem. The advantage of the latter is that you
  can get away without repartitioning your hard drive (which often
  implies backing everything up and restoring afterwards); the
  disadvantage is that Linux becomes susceptible to DOS viruses and
  that umsdos is somewhat slower than ext2fs. Even if you want to run
  Linux in this fashion, it might be a good idea to have ext2fs
  around: it enables you to read more floppy disks and facilitates the
  transition to a *real* Linux partition later. Another (rare) case
  which doesn't require ext2fs is a diskless Linux box which mounts
  all files over the network using NFS (in this case it's sufficient
  to enable NFS filesystem support below; if you are planning to do
  this, have a look at the netboot package in
  /pub/Linux/system/Linux-boot/, available via ftp (user: anonymous)
  from sunsite.unc.edu, extract with "tar xzvf filename"). There is a
  short ext2fs-FAQ, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/faqs. This option will enlarge your
  kernel by about 41 kB. Default is Y.

xiafs filesystem support
CONFIG_XIA_FS
  This is an old filesystem (= method to organize files on a harddisk
  partition or a floppy disk) and not in use anymore. This option
  would enlarge your kernel by about 28 kB. Let's all kill this beast:
  say N.  If you want to compile this as a module ( = code which can
  be inserted in and removed from the running kernel whenever you
  want), say M here and read Documentation/modules.txt. Note that the
  filesystem of your root partition cannot be compiled as a module.

fat fs support
CONFIG_FAT_FS
  If you want to use one of the FAT-based filesystems (the MS-DOS,
  VFAT (Windows'95) and UMSDOS filesystems), then you must include
  FAT support. This is not a filesystem in itself, but it provides
  the foundation for the other filesystems. This option will enlarge
  your kernel about 24 kB. If unsure, say Y. If you want to compile
  this as a module however ( = code which can be inserted in and 
  removed from the running kernel whenever you want), say M here and
  read Documentation/modules.txt. Note that if you compile the FAT
  support as a module, you cannot compile any of the FAT-based file-
  systems into the kernel - they will have to be modules as well.
  The filesystem of your root partition cannot be a module.

msdos fs support
CONFIG_MSDOS_FS
  This allows you to mount MSDOS partitions of your harddrive (unless
  they are compressed; to access compressed MSDOS partitions under
  Linux, you can either use the DOS emulator DOSEMU, described in the
  DOSEMU-HOWTO, available via ftp (user: anonymous) at
  sunsite.unc.edu:/pub/Linux/docs/HOWTO, or try dmsdosfs in
  sunsite.unc.edu:/pub/Linux/system/Filesystems/dosfs. If you intend
  to use dosemu with a non-compressed MSDOS partition, say Y here) and
  MSDOS floppies. This means that file access becomes transparent,
  i.e. the MSDOS files look and behave just like all other Unix files.
  Another way to read and write MSDOS floppies from within Linux (but
  not transparently) is with the mtools ("man mtools") program suite,
  which doesn't require the msdos filesystem support.  If you want to
  use umsdos, the Unix-like filesystem on top of DOS, which allows you
  to run Linux from within a DOS partition without repartitioning,
  you'll have to say Y or M here. If your have Windows'95 or Windows
  NT installed on your MSDOS partitions, you should use the VFAT
  filesystem instead, or you will not be able to see the long
  filenames generated by Windows'95 / Windows NT. This option will
  enlarge your kernel by about 7 kB. If unsure, say Y. This will only
  work if you said Y to "fat fs support" as well. If you want to
  compile this as a module however ( = code which can be inserted in
  and removed from the running kernel whenever you want), say M here
  and read Documentation/modules.txt. Note that the filesystem of your
  root partition cannot be a module.

vfat fs support
CONFIG_VFAT_FS
  This allows you to mount MSDOS partitions of your harddrive. It
  will let you use filenames in a way compatible with the long 
  filenames used by Windows'95 and Windows NT fat-based (not NTFS)
  partitions. It does not support Windows'95 compressed filesystems.
  You cannot use the VFAT filesystem for your root partition; use
  UMSDOS instead. This option enlarges your kernel by about 10 kB and
  it only works if you enabled the "fat fs support" above. Please read
  the file Documentation/filesystems/vfat.txt for details.
  If unsure, say N. If you want to compile this as a module ( = code 
  which can be inserted in and removed from the running kernel whenever 
  you want), say M here and read Documentation/modules.txt.

umsdos: Unix like fs on top of std MSDOS fs
CONFIG_UMSDOS_FS
  Say Y here if you want to run Linux from within an existing DOS
  partition of your harddrive. The advantage of this is that you can
  get away without repartitioning your hard drive (which often implies
  backing everything up and restoring afterwards) and hence you're
  able to quickly try out Linux or show it to your friends; the
  disadvantage is that Linux becomes susceptible to DOS viruses and
  that UMSDOS is somewhat slower than ext2fs.  Another use of umsdos
  is to write files with long unix filenames to MSDOS floppies; it
  also allows unix style softlinks and owner/permissions of files on
  MSDOS floppies. You will need a program called umssync in order to
  make use of umsdos. Read Documentation/filesystems/umsdos.txt. This
  option enlarges your kernel by about 25 kB and it only works if you
  enabled both "fat fs support" and "msdos fs support" above. If
  unsure, say N.  If you want to compile this as a module ( = code
  which can be inserted in and removed from the running kernel
  whenever you want), say M here and read
  Documentation/modules.txt. Note that the filesystem of your root
  partition cannot be a module.

/proc filesystem support
CONFIG_PROC_FS
  This is a virtual filesystem providing information about the status
  of the system. "Virtual" means that it doesn't take up any space on
  your harddisk: the files are created on the fly when you access
  them. Also, you cannot read the files with less: you need to use
  more or cat. The filesystem is explained in the Kernel Hacker's
  Guide at http://www.redhat.com:8080/HyperNews/get/khg.html on the
  Web, and also on the proc(8) manpage ("man 8 proc").  This option
  will enlarge your kernel by about 18 kB. It's totally cool; for
  example, "cat /proc/interrupts" gives information about what the
  different IRQs are used for at the moment (there is a small number
  of Interrupt ReQuest lines in your computer that are used by the
  periphery to gain the CPU's attention - often a source of trouble if
  two devices are mistakenly configured to use the same IRQ). Several
  programs depend on this, so everyone should say Y here.
  
NFS filesystem support
CONFIG_NFS_FS
  If you are connected to some other (usually local) Unix computer
  (using SLIP, PLIP, PPP or ethernet) and want to mount files
  residing on that computer (the NFS server) using the Network
  File Sharing protocol, say Y. "Mounting files" means that the client
  can access the files with usual UNIX commands as if they were
  sitting on the client's harddisk. For this to work, the server must
  run the programs nfsd and mountd (but does not need to have NFS
  filesystem support enabled). NFS is explained in the Network
  Administrator's Guide, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/LDP, and on its man page: "man
  nfs". There is also a NFS-FAQ in
  sunsite.unc.edu:/pub/Linux/docs/faqs which presumes that you know
  the basics of NFS already. If you say Y here, you should have said Y
  to TCP/IP networking also. This option would enlarge your kernel by
  about 27 kB. This filesystem is also available as a module ( = code
  which can be inserted in and removed from the running kernel
  whenever you want). If you want to compile it as a module, say M
  here and read Documentation/modules.txt. If you configure a diskless
  machine which will mount its root filesystem over nfs, you cannot
  compile this driver as a module. If you don't know what all this is
  about, say N.

Root file system on NFS
CONFIG_ROOT_NFS
  If you want your Linux box to mount its whole root filesystem from
  some other computer over the net via NFS (presumably because your
  box doesn't have a harddisk), say Y. Read Documentation/nfsroot.txt
  for details. Most people say N here.

BOOTP support
CONFIG_RNFS_BOOTP
  If you want your Linux box to mount its whole root filesystem from
  some other computer over the net via NFS and you want the IP address
  of your computer to be discovered automatically at boot time using
  the BOOTP protocol (a special protocol designed for doing this job),
  say Y here. In case the boot ROM of your network card was designed
  for booting Linux and does BOOTP itself, providing all necessary
  information on the kernel command line, you can say N here.  If
  unsure, say Y. Note that in case you want to use BOOTP, a BOOTP
  server must be operating on your network. Read
  Documentation/nfsroot.txt for details.

RARP support
CONFIG_RNFS_RARP
  If you want your Linux box to mount its whole root filesystem from
  some other computer over the net via NFS and you want the IP address
  of your computer to be discovered automatically at boot time using
  the RARP protocol (an older protocol which is being obsoleted by
  BOOTP), say Y here. Note that in case you want to use RARP, a RARP
  server must be operating on your network. Read
  Documentation/nfsroot.txt for details.

ISO9660 cdrom filesystem support
CONFIG_ISO9660_FS
  This is the standard filesystem used on CDROMs. It was previously
  known as "High Sierra Filesystem" and is called "hsfs" on other Unix
  systems. The so-called Rock-Ridge extensions which allow for long
  Unix filenames are also supported by this driver. If you have a
  CDROM drive and want to do more with it than just listen to audio
  CDs and watch its LEDs, say Y (and read the CDROM-HOWTO, available
  via ftp (user: anonymous) from
  sunsite.unc.edu:/pub/Linux/docs/HOWTO), thereby enlarging your
  kernel by about 27 kB; otherwise say N.  If you want to compile this
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt.

OS/2 HPFS filesystem support (read only)
CONFIG_HPFS_FS
  OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
  is the filesystem used for organizing files on OS/2 harddisk
  partitions. Say Y if you want to be able to read files from an OS/2
  HPFS partition of your harddrive. OS/2 floppies however are in
  regular MSDOS format, so you don't need this option in order to be
  able to read them. Read Documentation/filesystems/hpfs.txt. This
  filesystem is also available as a module ( = code which can be
  inserted in and removed from the running kernel whenever you
  want). If you want to compile it as a module, say M here and read
  Documentation/modules.txt. If unsure, say N.
  
System V and Coherent filesystem support
CONFIG_SYSV_FS
  SCO, Xenix and Coherent are commercial Unix systems for intel
  machines. Enabling this option would allow you to read and write to
  and from their floppies and harddisk partitions. If you have a
  floppy or harddisk partition like that, it is probable that they
  contain binaries from those other Unix systems; in order to run
  these binaries, you will want to install iBCS2 (iBCS2 [Intel Binary
  Compatibility Standard] is a kernel module which lets you run SCO,
  Xenix, Wyse, Unix Ware, Dell Unix and System V programs under Linux
  and is often needed to run commercial software, most prominently
  WordPerfect. It's in tsx-11.mit.edu:/pub/linux/BETA). If you only
  intend to mount files from some other Unix over the network using
  NFS, you don't need the System V filesystem support (but you need
  nfs filesystem support obviously). Note that this option is
  generally not needed for floppies, since a good portable way to
  transport files and directories between unixes (and even other
  operating systems) is given by the tar program ("man tar").  Note
  also that this option has nothing whatsoever to do with the option
  "System V IPC". Read about the System V filesystem in
  Documentation/filesystems/sysv-fs.txt. This option will enlarge your
  kernel by about 34 kB. If you want to compile this as a module ( =
  code which can be inserted in and removed from the running kernel
  whenever you want), say M here and read
  Documentation/modules.txt. If you haven't heard about all of this
  before, it's safe to say N.

BSD UFS filesystem support (read only)
CONFIG_UFS_FS
  BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD
  and NeXTstep) use a filesystem called UFS. Some System V Unixes can
  create and mount partitions and diskettes using this filesystem
  as well. Enabling this option allows you to mount these partitions
  and diskettes read-only. If you only intend to mount files from
  some other Unix over the network using NFS, you don't need the
  UFS filesystem support (but you need nfs filesystem support
  obviously). Note that this option is generally not needed for
  floppies, since a good portable way to transport files and
  directories between unixes (and even other operating systems)
  is given by the tar program ("man tar"). When accessing NeXTstep
  files, you may need to convert them from the NeXT character set
  to the Latin1 character set; use GNU recode for this purpose.
  Say Y to build UFS support into your kernel. If you want to compile
  this as a module ( = code which can be inserted in and removed from
  the running kernel whenever you want), say M here and read
  Documentation/modules.txt. If you haven't heard about all of this
  before, it's safe to say N.

BSD disklabel (FreeBSD partition tables) support
CONFIG_BSD_DISKLABEL
  FreeBSD uses its own partition scheme on your PC. It requires only
  one entry in the primary partition table of your disk and manages it
  similarly to DOS extended partitions, putting in its first sector a
  new partition table in disklabel format. Enabling this option allows
  you to read these disklabels and further mount FreeBSD partitions on
  your Linux box if you also have configured BSD ufs filesystem
  support. If you don't know what all this is about, say N.

SMD disklabel (Sun partition tables) support
CONFIG_SMD_DISKLABEL
  Like most systems, SunOS uses its own partition table format,
  incompatible with all others. Enabling this option allows you to read
  these partition tables and further mount SunOS disks on your Linux
  box if you also have configured BSD ufs filesystem support. This is
  mainly used to carry data from a Sparc under SunOS to your Linux box
  via a removable medium like magneto-optical or ZIP drives. If you
  don't know what all this is about, say N.

SMB filesystem support (to mount WfW shares etc..)
CONFIG_SMB_FS
  SMB (Server Message Buffer) is the protocol Windows for Workgroups
  (WfW), Windows NT and Lan Manager use to talk to each other over an
  ethernet. Enabling this allows you to mount their filesystems (often
  called "shares") and access them just like any other unix
  directory. For details, read Documentation/filesystems/smbfs.txt.
  Note: if you just want your box to act as an SMB *server* and make
  files and printing services available to Windows clients (which need
  to have a TCP/IP stack), you don't need to enable this filesystem
  support; you can use the program samba (available via ftp (user:
  anonymous) in sunsite.unc.edu:/pub/Linux/system/Network/samba) for
  that. General information about how to connect Linux, Windows
  machines and Macs is on the WWW at
  http://eats.com/linux_mac_win.html (to browse the WWW, you need to
  have access to a machine on the Internet that has one of the
  programs lynx, netscape or Mosaic).  If you want to compile the SMB
  support as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want), say M here and read
  Documentation/modules.txt. Most people say N, however.

SMB Win95 bug work-around
CONFIG_SMB_WIN95
  If you want to connect to a share exported by Windows 95, you should
  say Y here. The Windows 95 server contains a bug that makes listing
  directories unreliable. This option slows down the listing of
  directories. This makes the Windows 95 server a bit more stable.

NCP filesystem support (to mount NetWare volumes)
CONFIG_NCP_FS
  NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
  used by Novel NetWare clients to talk to file servers. It is to IPX
  what nfs is to tcp/ip, if that helps. Enabling this option allows
  you to mount NetWare file server volumes and to access them just
  like any other Unix directory. For details, please read the file
  Documentation/filesystems/ncpfs.txt in the kernel source and the
  IPX-HOWTO on sunsite.unc.edu:/pub/Linux/docs/howto.  If you want to
  compile this as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want), say M here and
  read Documentation/modules.txt.

Amiga FFS filesystem support (EXPERIMENTAL)
CONFIG_AFFS_FS
  The Fast File System (FFS) is the common filesystem used on harddisks
  by Amiga (tm) Systems since AmigaOS Version 1.3 (34.20). It's also
  possible to mount diskfiles used by the Un*X Amiga Emulator by Bernd
  Schmidt (http://www-users.informatik.rwth-aachen.de/~crux/uae.html)
  If you want to do the latter, you will also need the loop device
  support. Say Y if you want to be able to read and write files from
  and to an Amiga FFS partition of your harddrive. Amiga floppies
  however cannot be read with this driver due to an incompatibility of
  the floppy controller used in an Amiga and the standard floppy
  controller in PCs and workstations. Read
  Documentation/filesystems/affs.txt. This filesystem is also available
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a
  module, say M here and read Documentation/modules.txt.
  If unsure, say N.

Standard/generic serial support
CONFIG_SERIAL
  This selects whether you want to include the driver for the standard
  serial ports.  People who might say N here are those that are
  setting up dedicated ethernet WWW/ftp servers, or users that have
  one of the various bus mice instead of a serial mouse.  (Note that
  the Cyclades and Stallion multi serial port drivers do not need this
  driver built in for them to work. They are completely independent of
  each other.)  If you want to compile this driver as a module, say M
  here and read Documentation/modules.txt.  [WARNING: Do not compile
  this driver as a module if you are using non-standard serial ports,
  since the configuration information will be lost when kerneld
  automatically unloads the driver.  This limitation may be lifted in
  the future.]  Most people will say Y or M here, so that they can use
  serial mice, modems and similar devices connecting to the standard
  serial ports.

Digiboard PC/Xx Support
CONFIG_DIGI
  This is a driver for the Digiboard PC/Xe, PC/Xi, and PC/Xeve cards
  that give you many serial ports. You would need something like this
  to connect more than two modems to your linux box, for instance in
  order to become a BBS. If you have a card like that, say Y here and
  read the file Documentation/digiboard.txt.

SDL RISCom/8 card support
CONFIG_RISCOM8
  This is a driver for the SDL Communications RISCom/8 multiport card,
  that give you many serial ports. You would need something like this
  to connect more than two modems to your linux box, for instance in
  order to become a BBS. If you have a card like that, say Y here and
  read the file Documentation/riscom8.txt. Also it's possible to say
  M here and compile this driver as kernel loadable module.

Cyclades async mux support
CONFIG_CYCLADES
  This is a driver for a card that gives you many serial ports. You
  would need something like this to connect more than two modems to
  your linux box, for instance in order to become a BBS. If you want
  to compile this as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want), say M here and
  read Documentation/modules.txt. If you haven't heard about it, it's
  safe to say N. (As of 1.3.9x kernels, this driver's minor numbers
  start at 0 instead of 32.)

Stallion multiport serial support 
CONFIG_STALDRV
  Stallion cards give you many serial ports. You would need something
  like this to connect more than two modems to your linux box, for
  instance in order to become a BBS. If you say Y here, you will be
  asked for your specific card model in the next questions. Make sure
  to read drivers/char/README.stallion in this case. If you have never
  heard about all this, it's safe to say N.
 
Stallion EasyIO or EC8/32 support 
CONFIG_STALLION n
  If you have an EasyIO or EasyConnection 8/32 multiport Stallion
  card, then this is for you; say Y. Make sure to read
  drivers/char/README.stallion. If you want to compile this as a
  module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt.

Stallion EC8/64, ONboard, Brumby support
CONFIG_ISTALLION
  If you have an EasyConnection 8/64, ONboard, Brumby or Stallion
  serial multiport card, say Y here. Make sure to read
  drivers/char/README.stallion. To compile it as a module ( = code
  which can be inserted in and removed from the running kernel
  whenever you want), say M here and read Documentation/modules.txt.

Hayes ESP serial port support
CONFIG_ESP
  This is a driver which supports Hayes ESP serial ports.  It uses DMA
  to transfer data to and from the host.  Make sure to read
  drivers/char/README.esp. To compile this driver as a module ( = code
  which can be inserted in and removed from the running kernel
  whenever you want), say M here and read Documentation/modules.txt.
  This driver may be compiled as a loadable module.

Hayes ESP serial port DMA channel
CONFIG_ESP_DMA_CHANNEL
  This is the DMA channel to be used to transfer data to and from the host.
  One DMA channel is shared between all the ESP ports.   Valid values are
  1 and 3.

Hayes ESP serial port trigger level
CONFIG_ESP_TRIGGER_LEVEL
  This is the trigger level (in bytes) of the transmit FIFO and the receive
  FIFO.  Larger values may result in fewer interrupts; however, a value too
  high could result in data loss.  Valid values are 1 through 1015.

Parallel printer support
CONFIG_PRINTER
  If you intend to attach a printer to the parallel port of your Linux
  box (as opposed to using a serial printer; if the connector at the
  printer has 9 or 25 holes ["female"], then it's serial), say Y. Also
  read the Printing-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If you want to compile this
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt. If you want to use both a parallel
  printer and PLIP, there are two cases: 1) If the printer and the
  PLIP cable are to use the same parallel port (presumably because you
  have just one), it is best to compile both drivers as modules and
  load and unload them as needed. 2) To use different parallel ports
  for the printer and the PLIP cable, you can say Y to this printer
  driver, specify the base address of the parallel port(s) to use for
  the printer(s) with the "lp" kernel command line option. (See the
  documentation of your boot loader (lilo or loadlin) about how to
  pass options to the kernel at boot time. The lilo procedure is also
  explained in the SCSI-HOWTO, available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.) The standard base addresses
  as well as the syntax of the "lp" command line option can be found
  in drivers/char/lp.c. You can then say Y to the PLIP driver or,
  preferably, M in which case Documentation/networking/net-modules.txt
  tells you how to specify the port and IRQ to be used by PLIP at
  module load time.

Mouse Support (not serial mice)
CONFIG_MOUSE
  This is for machines with a bus mouse or a PS/2 mouse as opposed to
  a serial mouse. Most people have a regular serial MouseSystem or
  Microsoft mouse (made by Logitech) that plugs into a COM port
  (rectangular with 9 or 25 pins). These people say N here. If you
  have something else, read the Busmouse-HOWTO, available via ftp
  (user: anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO and say Y
  here. If you have a laptop, you either have to check the
  documentation or experiment a bit to find out whether the trackball
  is a serial mouse or not; it's best to say Y here for you. Note that
  the answer to this question won't directly affect the kernel: saying
  N will just cause this configure script to skip all the questions
  about non-serial mice.  If unsure, say Y.

Logitech busmouse support
CONFIG_BUSMOUSE
  Logitech mouse connected to a proprietary interface card. It's
  generally a round connector with 9 pins. Note that the newer mice
  made by Logitech don't use the Logitech protocol anymore; for those,
  you don't need this option. You want to read the Busmouse-HOWTO,
  available via ftp (user: anonymous) in
  sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If you want to compile this
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt. If you are unsure, say N and read the
  HOWTO nevertheless: it will tell you what you have. 

PS/2 mouse (aka "auxiliary device") support
CONFIG_PSMOUSE
  The PS/2 mouse connects to a special mouse port that looks much like
  the keyboard port (small circular connector with 6 pins). This way,
  the mouse does not use any serial ports. This port can also be used
  for other input devices like light pens, tablets, keypads. Compaq,
  AST and IBM all use this as their mouse port on currently shipping
  machines. The trackballs of some laptops are PS/2 mice also. In
  particular, the C&T 82C710 mouse on TI Travelmates is a PS/2
  mouse. Although PS/2 mice are not technically bus mice, they are
  explained in detail in the Busmouse-HOWTO, available via ftp (user:
  anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO.  When using a
  PS/2 mouse, you can get problems if you want to use the mouse both
  on the Linux console and under X. The mconv utility, available in
  sunsite.unc.edu:/pub/Linux/system/Misc, solves this problem. If you
  want to compile this mouse driver as a module ( = code which can be
  inserted in and removed from the running kernel whenever you want),
  say M here and read Documentation/modules.txt. If you are unsure,
  say N and read the HOWTO nevertheless: it will tell you what you
  have.

C&T 82C710 mouse port support (as on TI Travelmate)
CONFIG_82C710_MOUSE
  This is a certain kind of PS/2 mouse used on the TI Travelmate. If
  you are unsure, try first to say N here and come back if the mouse
  doesn't work. Read the Busmouse-HOWTO, available via ftp (user:
  anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO.

Microsoft busmouse support
CONFIG_MS_BUSMOUSE
  These animals (also called Inport mice) are connected to an
  expansion board using a round connector with 9 pins. If this is what
  you have, say Y and read the Busmouse-HOWTO, available via ftp
  (user: anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If you
  want to compile this as a module ( = code which can be inserted in
  and removed from the running kernel whenever you want), say M here
  and read Documentation/modules.txt. If you are unsure, say N and
  read the HOWTO nevertheless: it will tell you what you have. Also be
  aware that several vendors talk about 'Microsoft busmouse' and
  actually mean PS/2 busmouse - so count the pins on the connector.

ATIXL busmouse support
CONFIG_ATIXL_BUSMOUSE
  This is a rare type of busmouse that is connected to the back of an
  ATI video card. Note that most ATI mice are actually Microsoft
  busmice. Read the Busmouse-HOWTO, available via ftp (user:
  anonymous) in sunsite.unc.edu:/pub/Linux/docs/HOWTO.  If you want to
  compile this as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want), say M here and
  read Documentation/modules.txt. If you are unsure, say N and read
  the HOWTO nevertheless: it will tell you what you have. 

Support for user miscellaneous modules
CONFIG_UMISC
  This option forces generic miscellaneous minor device support in the
  kernel, and allows later loading of user miscellaneous device
  modules, such as drivers for optic pens and touchscreens. Unless you
  need such specific modules, or are willing to write/test one, just
  say N.

QIC-02 tape support
CONFIG_QIC02_TAPE
  If you have a non-SCSI tape drive like that, say Y. Or, if you want
  to compile this driver as a module ( = code which can be inserted in
  and removed from the running kernel whenever you want), say M here
  and read Documentation/modules.txt.

Do you want runtime configuration for QIC-02
CONFIG_QIC02_DYNCONF
  You can either configure this driver once and for all by editing a
  header file, in which case you should say N, or you can fetch a
  program via anonymous ftp which is able to configure this driver
  during runtime. If you want this, say Y.

Ftape (QIC-80/Travan) support
CONFIG_FTAPE
  If you have a tape drive that is connected to your floppy
  controller, say Y here. Some tape drives (like the Iomega Ditto
  3200) come with a high speed controller of its own.  These drives
  (and their companion controller) is also supported. If you have a
  special controller (such as the CMS FC-10, FC-20, Iomega Mach-II, or
  Ditto Dash), you must configure it by editing the file
  drivers/char/ftape/Makefile. If you want to use such a tape drive on
  a PCI-bus based system, please read the file
  drivers/char/ftape/README.PCI. This driver is also available as a
  runtime loadable module ( = code which can be inserted in and
  removed from the running kernel whenever you want). If you want to
  compile it as a module, say M here and read
  Documentation/modules.txt.

Zilog serial support
CONFIG_SUN_ZS
  This driver does not exist at this point, so you might as well say
  N.

Advanced Power Management
CONFIG_APM
  APM is a BIOS specification for saving power using several different
  techniques.  This is mostly useful for battery powered laptops with
  APM compliant BIOSes.  Specifically, the time will be reset after a
  USER RESUME operation, the /proc/apm device will provide battery
  status information, and user-space programs will receive
  notification of APM "events" (e.g., battery status
  change). Supporting software can be gotten via ftp (user: anonymous)
  from tsx-11.mit.edu/pub/linux/packages/laptops/apm/. This driver
  does not spin down disk drives (see hdparm(8) for that); and it
  doesn't turn off VESA-compliant "green" monitors.  This driver does
  not support the TI 4000M TravelMate and the ACER 486/DX4/75 because
  they don't have compliant BIOSes.  Many "green" desktop machines
  also don't have compliant BIOSes, and this driver will cause those
  machines to panic during the boot phase (typically, these machines
  are using a data segment of 0040, which is reserved for the Linux
  kernel). If you get random kernel OOPSes that don't seem to be
  related to anything and you have a motherboard with APM support, try
  disabling/enabling this option. Generally, if you don't have a
  battery in your machine, there isn't much point in using this
  driver.

Ignore USER SUSPEND
CONFIG_APM_IGNORE_USER_SUSPEND
  This option will ignore USER SUSPEND requests.  On machines with a
  compliant APM BIOS, you want to say N.  However, on the NEC Versa M
  series notebooks, it is necessary to say Y because of a BIOS bug.

Enable APM at boot time
CONFIG_APM_DO_ENABLE
  Enable APM features at boot time.  From page 36 of the APM BIOS
  specification: "When disabled, the APM BIOS does not automatically
  power manage devices, enter the Standby State, enter the Suspend State,
  or take power saving steps in response to CPU Idle calls."  This driver
  will make CPU Idle calls when Linux is idle (unless this feature is
  turned off -- see below).  This should always save battery power, but
  more complicated APM features will be dependent on your BIOS
  implementation.  You may need to turn this option off if your computer
  hangs at boot time when using APM support, or if it beeps continuously
  instead of suspending.  Turn this off if you have a NEC UltraLite Versa
  33/C or a Toshiba T400CDT.  This is off by default since most machines
  do fine without this feature.

Do CPU IDLE calls
CONFIG_APM_CPU_IDLE
  Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop.
  On some machines, this can activate improved power savings, such as a
  slowed CPU clock rate, when the machine is idle.  These idle calls are
  made after the idle loop has run for some length of time (e.g., 333
  mS).  On some machines, this will cause a hang at boot time or whenever
  the CPU becomes idle.  (On machines with more than one CPU, this option
  does nothing.)

Enable console blanking using APM
CONFIG_APM_DISPLAY_BLANK
  Enable console blanking using the APM.  Some laptops can use this to
  turn off the LCD backlight when the VC screen blanker blanks the
  screen.  Note that this is only used by the VC screen blanker, and
  won't turn off the backlight when using X11 (this also doesn't have
  anything to do with your VESA-compliant power-saving monitor).
  Further, this option doesn't work for all laptops -- it might not turn
  off your backlight at all, or it might print a lot of errors to the
  console, especially if you are using gpm.

Power off on shutdown 
CONFIG_APM_POWER_OFF
  This option will power off the computer after the Linux kernel is halted
  (e.g., with the halt(8) command).  As with the other APM options, this
  option may not work reliably with some APM BIOS implementations.

Watchdog Timer Support 
CONFIG_WATCHDOG
  If you enable this option and create a character special file
  /dev/watchdog with major number 10 and minor number 130 using mknod
  ("man mknod"), you will get a watchdog, i.e.: subsequently opening
  the file and failing to write to it for longer than 1 minute will
  result in rebooting the machine. This could be useful for a
  networked machine that needs to come back online as fast as possible
  after a lock-up. There's a watchdog implementation entirely in
  software (which can sometimes fail to reboot the machine) and a
  driver for hardware watchdog boards, which are more robust and can
  also keep track of the temperature inside your computer. For
  details, read Documentation/watchdog.txt in the kernel source. If
  unsure, say N. This driver is also available as a module ( = code
  which can be inserted in and removed from the running kernel
  whenever you want). If you want to compile it as a module, say M
  here and read Documentation/modules.txt.

Disable watchdog shutdown on close
CONFIG_WATCHDOG_NOWAYOUT
  The default watchdog behaviour is to stop the timer if the process
  managing it closes the file /dev/watchdog. It's always remotely
  possible that this process might get killed. If you enable this
  option, the watchdog cannot be stopped once it has been started.

WDT Watchdog timer
CONFIG_WDT
  If you have a WDT500P or WDT501P watchdog board, say Y here,
  otherwise N. It is not possible to probe for this board, which means
  that you have to set the IO port and IRQ it uses in the kernel
  source at the top of drivers/char/wdt.c. If you want to compile this
  as a module ( = code which can be inserted in and removed from the
  running kernel whenever you want), say M here and read
  Documentation/modules.txt.

WDT501 features
CONFIG_WDT_501
  Saying Y here and creating a character special file /dev/temperature
  with major number 10 and minor number 131 ("man mknod") will give
  you a thermometer inside your computer: reading from
  /dev/temperature yields one byte, the temperature in degrees
  Fahrenheit. This works only if you have a WDT501P watchdog board
  installed.

Fan Tachometer
CONFIG_WDT_501_FAN
  Enable the Fan Tachometer on the WDT501. Only do this if you have a fan
  tachometer actually set up.

Software Watchdog
CONFIG_SOFT_WATCHDOG
  A software monitoring watchdog. This will fail to reboot your system
  from some situations that the hardware watchdog will recover
  from. Equally it's a lot cheaper to install. This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt.

Berkshire Products PC Watchdog
CONFIG_PCWATCHDOG
  This is the driver for the Berkshire Products PC Watchdog card.
  This card simply watches your kernel to make sure it doesn't freeze,
  and if it does, it resets your computer after a certain amount of
  time.  This driver is like the WDT501 driver but for different
  hardware. The PC watchdog cards can be ordered from
  http://www.berkprod.com. Some example rc.local files are available
  from ftp.bitgate.com. This driver is also available as a module ( =
  code which can be inserted in and removed from the running kernel
  whenever you want). If you want to compile it as a module, say M
  here and read Documentation/modules.txt.  Most people will say N.

Support for Revision A cards
CONFIG_PCWD_REV_A
  This gives you support for revision A or B of the Berkshire PC Watchdog
  Card.  The way to tell if you have an A or B style card is to check the
  manual on page 22.  If it doesn't say "Port 3" at the top, you have a
  revision A or B card.  Also, if your card doesn't have an audible beep,
  chances are you have a revision A or B card.

Support for Revision C cards
CONFIG_PCWD_REV_C
  This card gives you an audible beep.  It also has support for disabling
  the card, enabling it, getting firmware versions, and a few other options.

Show card state on reset
CONFIG_PCWD_SHOW_PREVSTAT
  Enabling this option will display the previous reset state of your card.
  It will also give a little more verbose data about the card, or your
  system's previous status before reset.

Enhanced Real Time Clock Support
CONFIG_RTC
  If you enable this option and create a character special file
  /dev/rtc with major number 10 and minor number 135 using mknod ("man
  mknod"), you will get access to the real time clock built into your
  computer. Every PC has such a clock built in. It can be used to
  generate signals from as low as 1Hz up to 8192Hz, and can also be
  used as a 24 hour alarm.  It reports status information via the file
  /proc/rtc and its behaviour is set by various ioctls on
  /dev/rtc. People running SMP (= multiprocessor) versions of Linux
  should enable this option to read and set the RTC clock in a SMP
  compatible fashion. If you think you have a use for such a device
  (such as periodic data sampling), then say Y here, and go read the
  file Documentation/rtc.txt for details.

Sound card support
CONFIG_SOUND
  If you have a Sound Card in your Computer, i.e. if it can say more
  than an occasional beep, say Y. Be sure to have all the information
  about your sound card and its configuration down (I/O port,
  interrupt and DMA channel), because you will be asked for it. You
  want to read the Sound-HOWTO, available via ftp (user: anonymous)
  from sunsite.unc.edu:/pub/Linux/docs/HOWTO. There is also some
  information in various README files in drivers/sound.  If you want
  to compile this as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want), say M here and
  read Documentation/modules.txt. I'm told that even without a sound
  card, you can make your computer say more than an occasional beep,
  by programming the PC speaker. Kernel patches and programs to do
  that are at
  sunsite.unc.edu:/pub/Linux/kernel/patches/console/pcsndrv-X.X.tar.gz,
  to be extracted with "tar xzvf filename".
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want) on the
  Motorola 680x0 architecture. If you are compiling a kernel for
  Linux/m68k and want to compile this driver as a module, say M here
  and read Documentation/modules.txt.

ProAudioSpectrum 16 support
CONFIG_PAS
  Answer Y only if you have a Pro Audio Spectrum 16, ProAudio Studio
  16 or Logitech SoundMan 16.  Don't answer Y if you have some other
  card made by Media Vision or Logitech since they are not PAS16
  compatible.

SoundBlaster (SB, SBPro, SB16, clones) support
CONFIG_SB
  Answer Y if you have an original SoundBlaster card made by
  Creative Labs or a 100% hardware compatible clone (like the
  Thunderboard or SM Games). If your card was in the list of supported
  cards look at the card specific instructions in the
  drivers/sound/Readme.cards file before answering this question. For
  an unknown card you may answer Y if the card claims to be
  SoundBlaster compatible.

Generic OPL2/OPL3 FM synthesizer support
CONFIG_ADLIB
  Answer Y if your card has a FM chip made by Yamaha (OPL2/OPL3/OPL4).
  Answering Y is usually a safe and recommended choice, however some
  cards may have software (TSR) FM emulation. Enabling FM support with
  these cards may cause trouble (I don't currently know of any such
  cards, however).

Gravis Ultrasound support
CONFIG_GUS
  Enable this option for any type of Gravis Ultrasound card, including
  the GUS or GUS MAX.

MPU-401 support (NOT for SB16)
CONFIG_MPU401
  Be careful with this question. The MPU401 interface is supported by
  all soundcards. However, some natively supported cards have their
  own driver for MPU401. Enabling the MPU401 option with these cards
  will cause a conflict. Also, enabling MPU401 on a system that
  doesn't really have a MPU401 could cause some trouble. If your card
  was in the list of supported cards, look at the card specific
  instructions in the drivers/sound/Readme.cards file. It's safe to
  answer Y if you have a true MPU401 MIDI interface card.

6850 UART Midi support
CONFIG_UART6850
  This option enables support for MIDI interfaces based on the 6850
  UART chip. This interface is rarely found on sound cards.  It's safe
  to answer N to this question.

PSS (ECHO-ADI2111) support
CONFIG_PSS
  Answer Y only if you have Orchid SW32, Cardinal DSP16 or some other
  card based on the PSS chipset (AD1848 codec + ADSP-2115 DSP chip +
  Echo ESC614 ASIC CHIP).

16 bit sampling option of GUS (_NOT_ GUS MAX)
CONFIG_GUS16
  Answer Y if you have installed the 16 bit sampling daughtercard on
  your GUS.  Answer N if you have a GUS MAX, since enabling this
  option disables GUS MAX support.

GUS MAX support
CONFIG_GUSMAX
  Answer Y only if you have a Gravis Ultrasound MAX.

Microsoft Sound System support
CONFIG_MSS
  Again think carefully before answering Y to this question.  It's
  safe to answer Y if you have the original Windows Sound System card
  made by Microsoft or Aztech SG 16 Pro (or NX16 Pro).  Also you may
  answer Y in case your card is NOT among these:
     ATI Stereo F/X, AdLib, Audio Excell DSP16, Cardinal DSP16,
     Ensoniq SoundScape (and compatibles made by Reveal and Spea),
     Gravis Ultrasound, Gravis Ultrasound ACE, Gravis Ultrasound Max,
     Gravis Ultrasound with 16 bit option, Logitech Sound Man 16,
     Logitech SoundMan Games, Logitech SoundMan Wave, MAD16 Pro (OPTi
     82C929), Media Vision Jazz16, MediaTriX AudioTriX Pro, Microsoft
     Windows Sound System (MSS/WSS), Mozart (OAK OTI-601), Orchid
     SW32, Personal Sound System (PSS), Pro Audio Spectrum 16, Pro
     Audio Studio 16, Pro Sonic 16, Roland MPU-401 MIDI interface,
     Sound Blaster 1.0, Sound Blaster 16, Sound Blaster 16ASP, Sound
     Blaster 2.0, Sound Blaster AWE32, Sound Blaster Pro, TI TM4000M
     notebook, ThunderBoard, Turtle Beach Tropez, Yamaha FM
     synthesizers (OPL2, OPL3 and OPL4), 6850 UART MIDI Interface.
  For cards having native support in VoxWare, consult the card
  specific instructions in drivers/sound/Readme.cards. Some drivers
  have their own MSS support and enabling this option will cause a
  conflict.

Ensoniq Soundscape support
CONFIG_SSCAPE
  Answer Y if you have a soundcard based on the Ensoniq SoundScape
  chipset. Such cards are being manufactured at least by Ensoniq, Spea
  and Reveal (Reveal makes also other cards).

MediaTriX AudioTriX Pro support
CONFIG_TRIX
  Answer Y if you have the AudioTriX Pro sound card manufactured
  by MediaTrix.

Support for MAD16 and/or Mozart based cards
CONFIG_MAD16
  Answer Y if your card has a Mozart (OAK OTI-601) or MAD16
  (OPTi 82C928 or 82C929) audio interface chip. These chips are
  currently quite common so it's possible that many no-name cards
  have one of them. In addition the MAD16 chip is used in some
  cards made by known manufacturers such as Turtle Beach (Tropez),
  Reveal (some models) and Diamond (latest ones).

Support for Crystal CS4232 based (PnP) cards
CONFIG_CS4232
  Enable this if you have a card based on the Crystal CS4232 chip set.

Support for Turtle Beach Wave Front (Maui, Tropez) synthesizers
CONFIG_MAUI
  Enable this option if you have a Turtle Beach Wave Front, Maui, or 
  Tropez sound card.

Support for Crystal CS4232 based (PnP) cards
CONFIG_CS4232
  Use this option to enable experimental support for cards that use
  the Plug and Play protocol.

/dev/dsp and /dev/audio support
CONFIG_AUDIO
  Answering N disables /dev/dsp and /dev/audio, the A/D and D/A
  converter devices.  Answer N only if you know you will not need
  the option.  They are usually required.  Answer Y.

MIDI interface support
CONFIG_MIDI
  Answering N disables /dev/midixx devices and access to any MIDI
  ports using /dev/sequencer and /dev/music. This option also affects
  any MPU401 and/or General MIDI compatible devices.  Answer Y.

FM synthesizer (YM3812/OPL-3) support
CONFIG_YM3812
  Answer Y here, unless you know you will not need the option.

Sun Audio support
CONFIG_SUN_AUDIO
  This is support for the soundcards on Sun workstations. The code
  does not exist yet, so you might as well say N here.

Kernel profiling support
CONFIG_PROFILE
  This is for kernel hackers who want to know how much time the kernel
  spends in the various procedures. The information is stored in
  /proc/profile (enable the /proc filesystem!) and in order to read
  it, you need the readprofile package from sunsite.unc.edu. Its
  manpage gives information regarding the format of profiling data. To
  become a kernel hacker, you can start with the Kernel Hacker's Guide
  at http://www.redhat.com:8080/HyperNews/get/khg.html. Mere mortals
  say N.
 
Profile shift count
CONFIG_PROFILE_SHIFT
  This is used to adjust the granularity with which the addresses of
  executed instructions get recorded in /proc/profile. But since you
  enabled "Kernel profiling support", you must be a kernel hacker and
  hence you know what this is about :-)

ISDN subsystem
CONFIG_ISDN
  ISDN ("Integrated Services Digital Networks", called RNIS in
  France) is a special type of fully digital telephone line; it's
  mostly used to connect to your Internet service provider (with SLIP
  or PPP). The main advantage is that the speed is higher than
  ordinary modem/telephone connections. It only works if your computer
  is equipped with an ISDN card and both you and your service provider
  purchased an ISDN line from your phone company.  For details, read
  http://alumni.caltech.edu/~dank/isdn/ on the WWW. (To browse the
  WWW, you need to have access to a machine on the Internet that has
  one of the programs lynx, netscape or Mosaic.)  This driver allows
  you to use an ISDN-card for networking connections and as dialin/out
  device. The isdn-tty's have a built in AT-compatible modem
  emulator. Network devices support autodial, channel-bundling,
  callback and caller-authentication without having a daemon
  running. A reduced T.70 protocol is supported with tty's suitable
  for German BTX. On D-Channel, the protocols EDSS1 and 1TR6 are
  supported. See Documentation/isdn/README for more information.

Support synchronous PPP
CONFIG_ISDN_PPP
  This enables synchronous PPP via ISDN. This protocol is used by
  Cisco or Sun for example. So you want say Y here if the other end of
  your ISDN connection supports it. You will need a special version of
  pppd (called ipppd) for using this feature. See
  Documentation/isdn/README.syncppp and Documentation/isdn/syncPPP.FAQ
  for more information.

Support generic MP (RFC 1717)
CONFIG_ISDN_MPP
  With synchronous PPP enabled, it is possible to increase throughput
  by bundling several ISDN-connections, using this protocol. See
  Documentation/isdn/README.syncppp for more information.

Use VJ-compression with synchronous PPP
CONFIG_ISDN_PPP_VJ
  This enables Van Jacobson header compression for synchronous PPP.

Support audio via ISDN
CONFIG_ISDN_AUDIO
  With this option enabled, the modem-emulator supports a subset
  of the EIA Class 8 Voice commands. Using a getty with voice-support
  (mgetty+sendfax by gert@greenie.muc.de with an extension, available
  with the ISDN utility package for example), you will be able
  to use your Linux box as an ISDN-answering machine. Of course, this
  must be supported by the lowlevel driver also. Currently, the Teles
  driver is the only voice-supporting one. See
  Documentation/isdn/README.audio for more information.

ICN 2B and 4B support
CONFIG_ISDN_DRV_ICN
  This enables support for two kinds of ISDN-cards made by a German
  company called ICN. 2B is the standard version for a single ISDN
  line with two B-channels, 4B supports two ISDN lines. For running
  this card, additional firmware is necessary, which has to be
  downloaded into the card using a utility which is distributed
  separately.  See Documentation/isdn/README and README.icn for more
  information.

Teles, NICCY1016PC, Creatix support
CONFIG_ISDN_DRV_TELES
  This enables support for the Teles ISDN-cards S0-16.0, S0-16.3, S0-8
  and many compatibles. By default, the driver is configured to
  support a 16.0-type using EDSS1-protocol. See
  Documentation/isdn/README on how to configure it using 16.3, a
  different D-channel protocol, or non-standard irq/port/shmem
  settings.

PCBIT-D support
CONFIG_ISDN_DRV_PCBIT
  This enables support for the PCBIT ISDN-cards. This card is
  manufactured in Portugal by Octal. For running this card, additional
  firmware is necessary, which has to be downloaded into the card
  using a utility which is distributed separately.  See
  Documentation/isdn/README and Documentation/isdn/README.pcbit for
  more information.

Support for AP1000 multicomputer
CONFIG_AP1000
  This enables support for a sparc based parallel multi-computer
  called an AP1000+. For details on our efforts to port Linux to this
  machine see http://cap.anu.edu.au/cap/projects/linux or mail to
  hackers@cafe.anu.edu.au

Sparc ESP SCSI support
CONFIG_SCSI_SUNESP
  This is the driver for the Sun ESP SCSI host adapter. The ESP
  chipset is present in most SPARC-based computers.

Sparc /dev/openprom compatibility driver
CONFIG_SUN_OPENPROMIO
  This driver provides user programs with an interface to the Sparc
  PROM device tree. The driver implements a SunOS-compatible
  interface and a NetBSD-compatible interface. If you want to
  compile this as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want), say M and read
  Documentation/modules.txt. If unsure, say Y.

# m68k-specific kernel options
# Documented by Chris Lawrence <quango@themall.net> et al.

Amiga support
CONFIG_AMIGA
  This option enables support for the Amiga series of computers.  If
  you plan to use this kernel on an Amiga, say Y here; otherwise say N.

Atari support
CONFIG_ATARI
  This option enables support for the 68000-based Atari series of
  computers (including the TT, Falcon and Medusa).  If you plan to use
  this kernel on an Atari, say Y here; otherwise say N.

Macintosh support
CONFIG_MAC
  This option would enable support for the Apple Macintosh if there was
  any for it.  Say N unless you've coded all the necessary support. ;)

# CONFIG_APOLLO, etc. coming soon (?)

68020 support
CONFIG_M68020
  If you anticipate running this kernel on a computer with a MC68020 processor,
  say Y.  Otherwise, say N.  Note that the 68020 requires a 68851 MMU 
  (= memory management unit) to run Linux/m68k.

68030 support
CONFIG_M68030
  If you anticipate running this kernel on a computer with a MC68030 processor,
  say Y.  Otherwise, say N.  Note that a MC68EC030 will not work, as it does
  not include an MMU (= memory management unit).

68040 support
CONFIG_M68040
  If you anticipate running this kernel on a computer with a MC68LC040 or
  MC68040 processor, say Y.  Otherwise, say N.  Note that an MC68EC040 will
  not work, as it does not include an MMU (= memory management unit).

Use -m68040 flag for 68040 specific optimizations
CONFIG_OPTIMIZE_040
  If you will only be running this kernel on a 68040-series processor,
  this will make the kernel run somewhat faster.  However, it will no longer
  run on a 68020 or 68030, no matter whether you included 68020 and 68030
  support or not.  Say N unless the only processor you are compiling support
  for is the 68040 (or 68LC040).

68060 support
CONFIG_M68060
  If you anticipate running this kernel on a computer with a MC68060
  processor, say Y.  Otherwise, say N.

Use -m68060 flag for 68060 specific optimizations
CONFIG_OPTIMIZE_060
  If you will only be running this kernel on a 68060-series processor,
  this will make the kernel run somewhat faster.  However, it will no longer
  run on a 68020, 68030 or 68040, no matter whether you included support
  for those processors or not.  Say N unless the only processor you are
  compiling support for is the 68060.

Advanced processor options
CONFIG_ADVANCED_CPU
  This gives you access to some advanced options for the CPU.  The
  defaults should be fine for most users, but these options may make
  it possible for you to improve performance somewhat if you know what
  you are doing.  Most users should say N to this question.

Use read-modify-write instructions
CONFIG_RMW_INSNS
  This allows to use certain instructions that work with indivisible
  read-modify-write bus cycles. While this is faster than the
  workaround of disabling interrupts, it can conflict with DMA (=
  direct memory access) on many Amiga systems, and it is also said to
  destabilize other machines. It is very likely that this will cause
  serious problems on any Amiga or Atari Medusa if set. The only
  configuration where it should work are 68030-based Ataris, where it
  apparently improves performance. But you've been warned! Unless you
  really know what you are doing, say N. Try Y only if you're
  quite adventurous.

Amiga AutoConfig Identification
CONFIG_ZORRO
  This enables support for automatic identification of Amiga expansion
  cards that obey the AutoConfig(tm) specification.  You should say Y
  to this question unless you have no expansion cards and no intention
  of getting any.

Amiga OCS chipset support
CONFIG_AMIFB_OCS
  This enables support for the original Agnus and Denise video chips,
  found in the Amiga 1000 and most A500's and A2000's.  If you intend
  to run Linux on any of these systems, say Y; otherwise say N.

Amiga ECS chipset support
CONFIG_AMIFB_ECS
  This enables support for the Enhanced Chip Set, found in later A500's,
  later A2000's, the A600, the A3000, the A3000T and CDTV.  If you intend to
  run Linux on any of these systems, say Y; otherwise say N.

Amiga AGA chipset support
CONFIG_AMIFB_AGA
  This enables support for the Advanced Graphics Architecture (also
  known as the AGA or AA) Chip Set, found in the A1200, A4000, A4000T
  and CD32.  If you intend to run Linux on any of these systems, say Y;
  otherwise say N.

Amiga Cybervision support
CONFIG_FB_CYBER
  This enables support for the Cybervision 64 graphics card from Phase5.
  Please note that its use is not all that intuitive (i.e. if you have
  any questions, be sure to ask!).  Say N unless you have a Cybervision
  64 or plan to get one before you next recompile the kernel.

Amiga GSP (TMS340x0) support
CONFIG_AMIGA_GSP
  Include support for Amiga graphics cards that use the Texas Instruments
  TMS340x0 GSP (= graphics signal processor) chips.  Say Y if you want
  to use a DMI Resolver or Commodore A2410 (Lowell) graphics card on
  an Amiga; otherwise, say N.

DMI Resolver support
CONFIG_GSP_RESOLVER
  Include support in the kernel for the DMI Resolver graphics card.  If
  you have one, say Y; otherwise, say N.

A2410 support
CONFIG_GSP_A2410
  Include support in the kernel for the Commodore/University of Lowell
  A2410 graphics card.  If you have one, say Y; otherwise, say N.

Amiga Zorro II ramdisk support
CONFIG_AMIGA_Z2RAM
  This enables support for using Chip RAM and Zorro II RAM as a ramdisk
  or as a swap partition.  Say Y if you want to include this driver in
  the kernel.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

Atari ACSI support
CONFIG_ATARI_ACSI
  This enables support for the Atari ACSI interface. This driver is
  also available as a module ( = code which can be inserted in and
  removed from the running kernel whenever you want). The driver
  supports hard disks and CD-ROMs, which have 512-byte sectors, or can
  be switched to that mode. Due to the ACSI command format, only disks
  up to 1 GB are supported. Special support for certain ACSI to SCSI
  adapters, which could relax that, isn't included yet. The ACSI
  driver is also the basis for certain other drivers for devices
  attached to the ACSI bus: Atari SLM laser printer, BioNet-100
  Ethernet, and PAMsNet Ethernet. If you want to use one of these
  devices, you need ACSI support, too.

Probe all LUNs on each ACSI device
CONFIG_ACSI_MULTI_LUN
  If you have a ACSI device that supports more than one LUN (Logical
  Unit Number), e.g. a CD jukebox, you should say Y here so that all
  will be found by the ACSI driver. An ACSI device with multiple LUNs
  acts logically like multiple ACSI devices. The vast majority of ACSI
  devices have only one LUN, and so most people can say N here and
  should in fact do so, because it is safer.

Atari SLM laser printer support
CONFIG_ATARI_SLM
  If you have an Atari SLM laser printer, say Y to include support for
  it in the kernel. Otherwise, say N. This driver is also available as
  a module ( = code which can be inserted in and removed from the
  running kernel whenever you want).
  Be warned: the driver needs much ST-RAM and can cause problems due
  to that fact!

A3000 WD33C93A support
CONFIG_A3000_SCSI
  If you have an Amiga 3000 and have SCSI devices connected to the built-in
  SCSI controller, say Y.  Otherwise, say N.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

A2091 WD33C93A support
CONFIG_A2091_SCSI
  If you have a Commodore A2091 SCSI controller, say Y.  Otherwise, say N.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

GVP Series II WD33C93A support
CONFIG_GVP11_SCSI
  If you have a Great Valley Products Series II SCSI controller, say Y.
  Also say Y if you have a later model of GVP SCSI controller (such as
  the GVP A4008 or a Combo board).  Otherwise, say N.
  This driver does NOT work for the T-Rex series of accelerators from
  TekMagic and GVP-M.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

Cyberstorm SCSI support
CONFIG_CYBERSTORM_SCSI
  If you have an Amiga with an original (MkI) Phase5 Cyberstorm accelerator
  board and the optional Cyberstorm SCSI controller, say Y.  Otherwise,
  say N.

Cyberstorm II SCSI support
CONFIG_CYBERSTORMII_SCSI
  If you have an Amiga with a Phase5 Cyberstorm MkII accelerator board
  and the optional Cyberstorm SCSI controller, say Y.  Otherwise, say N.

Blizzard 2060 SCSI support
CONFIG_BLZ2060_SCSI
  If you have an Amiga with a Phase5 Blizzard 2060 accelerator board and
  want to use the onboard SCSI controller, say Y.  Otherwise, say N.

Blizzard 1230IV/1260 SCSI support
CONFIG_BLZ1230_SCSI
  If you have an Amiga 1200 with a Phase5 Blizzard 1230IV or Blizzard 1260
  accelerator, and the optional SCSI module, say Y.  Otherwise, say N.

Atari native SCSI support
CONFIG_ATARI_SCSI
  If you have an Atari with built-in NCR5380 SCSI controller (TT,
  Falcon, ...) say Y to get it supported. Of course also, if you have
  an compatible SCSI controller (e.g. for Medusa). This driver is also
  available as a module ( = code which can be inserted in and removed
  from the running kernel whenever you want). If you want to compile
  it as a module, say M here and read Documentation/modules.txt.
  This driver supports both styles of NCR integration into the system:
  the TT style (separate DMA), and the Falcon style (via ST-DMA,
  replacing ACSI). It does NOT support other schemes, like in the
  Hades (without DMA).

Long delays for Toshiba CD-ROMs
CONFIG_ATARI_SCSI_TOSHIBA_DELAY
  This option increases the delay after a SCSI arbitration to
  accomodate some flakey Toshiba CD-ROM drives. Say Y if you intend to
  use a Toshiba CD-ROM drive; otherwise, the option is not needed and
  would impact performance a bit, so say N.

Ariadne support
CONFIG_ARIADNE
  If you have a VillageTronics Ariadne Ethernet adapter, say Y.  Otherwise,
  say N.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

A2065 support
CONFIG_A2065
  If you have a Commodore A2065 Ethernet adapter, say Y.  Otherwise, say N.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

Hydra support
CONFIG_HYDRA
  If you have a Hydra Ethernet adapter, say Y.  Otherwise, say N.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

Atari Lance support
CONFIG_ATARILANCE
  Say Y to include support for several Atari Ethernet adapters based
  on the AMD Lance chipset: RieblCard (with or without battery), or
  PAMCard VME (also the version by Rhotron, with different addresses).

BioNet-100 support
CONFIG_ATARI_BIONET
  Say Y to include support for BioData's BioNet-100 Ethernet adapter
  for the ACSI port. The driver works (has to work...) with a polled
  I/O scheme, so it's rather slow :-(

PAMsNet support
CONFIG_ATARI_PAMSNET
  Say Y to include support for the PAMsNet Ethernet adapter for the
  ACSI port ("ACSI node"). The driver works (has to work...) with a
  polled I/O scheme, so it's rather slow :-(

Multiface Card III parallel support
CONFIG_MULTIFACE_III_LP
  If you have a Multiface III card for your Amiga, and want to use its
  parallel port in Linux, say Y.  Otherwise, say N.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

Amiga mouse support
CONFIG_AMIGAMOUSE
  If you want to be able to use an Amiga mouse in Linux, say Y.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

Amiga Copper Console
CONFIG_COPCON
  This configures the console to use the Amiga's graphics coprocessor for
  scrolling, instead of using the CPU.  This option markedly improves
  response times in the high color modes (5 bitplanes and up).  If you
  would like to use this, say Y; otherwise, say N.

Atari mouse support
CONFIG_ATARIMOUSE
  If you want to be able to use an Atari mouse in Linux, say Y.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

Atari MFP serial support
CONFIG_ATARI_MFPSER
  If you like to use the MFP serial ports ("Modem1", "Serial1") under
  Linux, say Y. The driver equally supports all kinds of MFP serial
  ports and automatically detects whether Serial1 is available. This
  driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.
  Note for Falcon users: You also have an MFP port, it's just not
  wired to the outside... But you could use the port under Linux.

Atari SCC serial support
CONFIG_ATARI_SCC
  If you have serial ports based on a Zilog SCC chip (Modem2, Serial2,
  LAN) and like to use them under Linux, say Y. All built-in SCC's are
  supported (TT, MegaSTE, Falcon), and also the ST-ESCC. If you have
  two connectors for channel A (Serial2 and LAN), they are visible as
  two separate devices. This driver is also available as a module ( =
  code which can be inserted in and removed from the running kernel
  whenever you want). If you want to compile it as a module, say M
  here and read Documentation/modules.txt.

Atari MIDI serial support
CONFIG_ATARI_MIDI
  If you want to use your Atari's MIDI port in Linux, say Y.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

Amiga builtin serial support
CONFIG_AMIGA_BUILTIN_SERIAL
  If you want to use your Amiga's built-in serial port in Linux, say Y.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

GVP IO-Extender support
CONFIG_GVPIOEXT
  If you want to use a GVP IO-Extender serial card in Linux, say Y.
  Otherwise, say N.

Multiface Card III serial support
CONFIG_MULTIFACE_III_TTY
  If you want to use a Multiface III card's serial port in Linux, say Y.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

Amiga or Atari DMA sound support
CONFIG_DMASOUND
  If you want to use the internal audio of your Atari or Amiga in Linux,
  answer Y to this question.  This will provide a Sun-like /dev/audio,
  compatible with the Linux/i386 sound system.  Otherwise, say N.
  This driver is also available as a module ( = code which can be inserted
  in and removed from the running kernel whenever you want). If you
  want to compile it as a module, say M here and read
  Documentation/modules.txt.

MSDOS partition support
CONFIG_MSDOS_PARTITION
  This option enables support for using hard disks that were
  partitioned on an MS-DOS system.  This may be useful if you are
  sharing a hard disk between i386 and m68k Linux boxes, for example.
  Say Y if you need this feature; users who are only using their
  system-native partitioning scheme can say N here.

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