105 lines
3.8 KiB
Groff
105 lines
3.8 KiB
Groff
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.\" Copyright (c) 1996 John T. Kohl
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $NetBSD: fdc.4,v 1.1 1996/11/29 16:33:07 jtk Exp $
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.\"
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.Dd November 28, 1996
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.Dt FDC 4 i386
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.Os NetBSD
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.Sh NAME
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.Nm fdc
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.Nd NEC 765 floppy disk controller driver
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.Sh SYNOPSIS
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.Cd "fdc0 at isa? port 0x3f0 irq 6 drq 2"
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.Cd "fd* at fdc? drive ?"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for the NEC 765 floppy disk controller and
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floppy disk drives, commonly found on IBM-PC compatible systems.
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.Pp
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The driver supports the following floppy diskette formats by using
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particular partitions:
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.Bl -tag -width -offset indent -compact
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.It 1.44MB 3.5-inch (b)
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.It "1.2MB " 5.25-inch (c)
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.It "360KB " 3.5-inch (1.2MB drive) (d)
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.It "360KB " 3.5-inch (IBM-PC drive) (e)
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.It "720KB " 3.5-inch (f)
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.It "720KB " 5.25-inch (g)
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.It "360KB " 3.5-inch (h)
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.El
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Partition
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.Ar a
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selects the default format for the attached floppy drive, as determined
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by the BIOS configuration for the diskette drive.
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.Sh FORMATTING
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The driver supports floppy disk formatting using the interfaces in
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.Pa Aq sys/fdio.h :
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.Bl -tag -width FDIOCFORMAT_TRACK -compact
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.It Dv FDIOCGETFORMAT Fa struct fdformat_parms
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Fetch current formatting parameters. This gets the default parameters
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for the open device if no parameters have been set during the session.
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.It Dv FDIOCSETFORMAT Fa struct fdformat_parms
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Set formatting parameters.
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The driver saves this state and it persists while the device is open.
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.It Dv FDIOCFORMAT_TRACK Fa struct fdformat_cmd
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Format a track on the medium.
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If this call returns
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.Em EINVAL ,
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the track formatting parameters were out of range for the medium.
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If it returns
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.Em EIO ,
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there was a medium error while formatting the track.
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.It Dv FDIOCSETOPTS int
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Set driver options which persist until the device is closed. The
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options should be the logical OR of the desired values below:
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.Bl -tag -width FDOPT_NORETRY -compact
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.It FDOPT_NORETRY
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Do not retry operations on failure
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.It FDOPT_SILENT
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Do not print error messages to the console
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.El
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.It Dv FDIOCGETOPTS Fa int
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Fetch drive options.
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.El
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.Pp
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A typical use of the formatting facilities would be to open the device,
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call
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.Cm FDIOCGETFORMAT
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to fetch the current format parameters, perhaps
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change a parameter or two, display the formatting details to the user,
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and then call
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.Cm FDIOCSETFORMAT
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followed by a series of calls to
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.Cm FDIOCFORMAT_TRACK .
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.Sh SEE ALSO
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.Xr fdformat 8 .
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.Sh HISTORY
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The
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.Nm
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formatting support appeared in NetBSD-1.3.
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