# The Linux Kernel API

## Interrupt Handling

!Iarch/i386/kernel/irq.c

## MTRR Handling

!Earch/i386/kernel/mtrr.c

## Power Management

!Ekernel/pm.c

## Miscellaneous Device

!Edrivers/char/misc.c

## Video4Linux

!Edrivers/char/videodev.c

## Sound Devices

!Edrivers/sound/sound_core.c !Idrivers/sound/sound_firmware.c

## MCA Architecture

### MCA Device Functions

!Earch/i386/kernel/mca.c

### MCA Bus DMA

!Iinclude/asm-i386/mca_dma.h

## Synchronous PPP

!Edrivers/net/wan/syncppp.c

## 16x50 UART Driver

!Edrivers/char/serial.c

## Z85230 Support Library

!Edrivers/net/wan/z85230.c