FD(4) | Device Drivers Manual (sun3) | FD(4) |
fd
— Sun 3/80
i82027 floppy disk drive controller driver
fdc0 at obio0
(sun3x)
fd* at fdc0
The 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:
The driver supports floppy disk formatting using the interfaces in
<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_NORETRY
FDOPT_SILENT
FDIOCGETOPTS
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
.
The fd
formatting support appeared in
NetBSD 1.3.
Formatting appears to not work reliably on all machines.
June 23, 1996 | NetBSD 10.99 |