| FD(4) | Device Drivers Manual (sun3) | FD(4) | 
fd —
fdc0 at obio0 (sun3x)
fd* at fdc0
fd driver is for the built-in floppy diskette drive
  run by the Intel i82027 controller found on the Sun 3/80.
Bits [0-3] of the minor device number of the special files referring to this device encode the floppy density as follows:
<sys/fdio.h>:
FDIOCGETFORMAT
    struct fdformat_parmsFDIOCSETFORMAT
    struct fdformat_parmsFDIOCFORMAT_TRACK
    struct fdformat_cmdEINVAL, the track formatting parameters were out
      of range for the medium. If it returns EIO, there
      was a medium error while formatting the track.
    
  FDIOCSETOPTS
    intFDOPT_NORETRYFDOPT_SILENTFDIOCGETOPTS
    intA typical use of the formatting facilities would be to open the
    device, call FDIOCGETFORMAT to fetch the current
    format parameters, perhaps change a parameter or two, display the formatting
    details to the user, and then call FDIOCSETFORMAT
    followed by a series of calls to
  FDIOCFORMAT_TRACK.
fd formatting support appeared in
  NetBSD 1.3.
| June 23, 1996 | NetBSD 10.0 |