floppy(7)                      DG/UX R4.11MU05                     floppy(7)


NAME
       floppy - floppy disk (Intel only)

SYNOPSIS
       floppy([node-id[,instance-number[,drive-number]]])

DESCRIPTION
       The floppy device driver accesses an Intel 8272A-compatible floppy
       disk drive controller connected to an ISA or EISA bus.  This driver
       supports two floppy drives per floppy controller, supporting the
       following diskette formats:

       Size       Capacity   Sectors    Cylinders
       (inches)              per Track

       5 1/4      360 KB     9          40
       5 1/4      1220 KB    15         80
       3 1/2      720 KB     9          80
       3 1/2      1440 KB    18         80


       To configure a floppy device, you must add a device name entry of the
       form described above to the DG/UX system configuration file.  The
       parameters in a device name have the following meanings:

       ·   The node-id parameter is currently not used and if set, it should
           be set to 0.  The default value for node-id is 0.

       ·   The instance-number parameter is a hexadecimal number which
           represents the floppy controller number.  The default value for
           instance-number is 0.

       ·   The drive-number parameter can be set to either A, B, or 0.  It
           represents the floppy disk drive number in reference to the
           floppy controller represented by instance-number.  If the drive-
           number is set to any of the allowable values, the floppy device
           driver will attempt to configure both floppy drive A and B.  The
           default value for drive-number is 0.


FILES
       Each floppy device creates two character-special device nodes when it
       is configured, with pathnames of the form:

           /dev/rpdsk/floppy([node-id],[instance-number][,drive-number])
           /dev/rpdsk/floppy([node-id],[instance-number][,drive-number])s

       Each floppy device creates two block-special device nodes when it is
       configured, with pathnames of the form:

           /dev/pdsk/floppy([node-id],[instance-number][,drive-number])
           /dev/pdsk/floppy([node-id],[instance-number][,drive-number])s


       The floppy device nodes without the s suffix represent the entire
       diskette, while the floppy device nodes with the s suffix represent
       the entire diskette excluding the first cylinder.


       The chk.devlink command is responsible for creating and maintaining
       an additional "short-name" link to each such block-special and
       character-special device node.  See the chk.devlink(1M) and
       devlinktab(4M) man pages for details.


       The mkfs command can be used to create a DG/UX or MS-DOS file system
       on a floppy disk.  See the mkfs(1M) man page for details.

EXAMPLES
       The following entry in a DG/UX configuration file configures all
       floppy disk devices connected to floppy controller 0:

            floppy()


SEE ALSO
       dsk(7), rdsk(7), mkfs(1M), chk.devlink(1M), devlinktab(4M).

NOTE
       The floppy device driver does not support the sar(1) and nsar(1)
       commands.


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