82 lines
2.3 KiB
Groff
82 lines
2.3 KiB
Groff
.\" $NetBSD: mcd.4,v 1.5 1999/03/10 09:31:17 erh Exp $
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.\"
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.\" Copyright (c) 1994 James A. Jegers
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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. 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 WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\"
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.Dd November 29, 1994
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.Dt MCD 4
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.Os NetBSD
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.Sh NAME
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.Nm mcd
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.Nd Mitsumi CD-ROM driver
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.Sh SYNOPSIS
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.Cd "mcd0 at isa? port 0x300 irq 10"
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.Cd "#options MCD_PROMISC"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for
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.Tn Mitsumi
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.Tn CD-ROM
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controller and drive on the
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.Xr isa 4
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bus.
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.Pp
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.Sh FILES
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.Bl -tag -width /dev/rmcd[0-9][a-h] -compact
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.It Pa /dev/cd[0-9][a-h]
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block mode Mitsumi
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.Tn CD-ROM
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devices
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.It Pa /dev/rmcd[0-9][a-h]
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raw mode Mitsumi
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.Tn CD-ROM
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devices
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.El
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.Sh BUGS
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The
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.Nm
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hardware is difficult to probe accurately.
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Historically, the
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.Nm
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probe would accept any return values as indicating that an
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.Nm
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drive was present. Other devices, particularly
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.Xr ne 4
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or
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.Xr we 4 ,
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would then be incorrectly claimed by the
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.Nm
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driver. The driver now only accepts result codes known to indicate
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Mitsumi-compatible CD controllers, but may reject some
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.Nm
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hardware which returns other result codes.
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.Pp
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.Cd "options MCD_PROMISC"
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enables the original promiscuous probe behaviour. Use with extreme caution.
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.Sh SEE ALSO
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.Xr intro 4 ,
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.Xr isa 4 ,
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.Xr ne 4 ,
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.Xr we 4
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