FDC(4)

NAME
fdc - PC architecture floppy disk controller driver

SYNOPSIS
controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr
disk fd0 at fdc0 drive 0
disk fd1 at fdc0 drive 1

For QIC40 and QIC80 tapedrives controlled by the floppy controller:
tape ft0 at fdc0 drive 2

DESCRIPTION
This driver provides access to floppy disk drives and QIC40/80 tapedrives. In /dev for each floppy device a number of minor devices are present. The /dev/fd* devices with trailing alphabetic characters are used to indicate indicate the size of the floppy disk (so: 720kB, 1440kB etc). The latter are used for formatting disks using fdformat or for accessing different density disks in multidensity drive. Example: 720kB disk in a 1.44Mb drive.

FILES
/dev/fd*
    floppy disk device nodes
/dev/fd*.<size in kB>
    floppy disk device nodes where the trailing number indicates the floppy capacity
/dev/ft*
    floppy tape (QIC40/80) device nodes
/sys/i386/conf/GENERIC
    sample generic kernel config file
/sys/i386/isa/fd.c
    floppy driver source
/sys/i386/isa/ft.c
    floppy tape (QIC40/80 driver source

SEE ALSO
fdformat(1), disktab(5), ft(8)