77 lines
2.9 KiB
Groff
77 lines
2.9 KiB
Groff
.\"
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.\" Copyright (c) 1994 Wilko Bulte
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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 withough 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 August 31, 1994
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.Dt AHB 4 i386
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.Os FreeBSD
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.Sh NAME
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.Nm ahb
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.Nd
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Adaptec EISA SCSI host adapter driver
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.Sh SYNOPSIS
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.Cd "controller ahb0 at isa? bio irq ? vector ahbintr
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.Cd "controller scbus0
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.sp
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For each disk:
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.Cd "device sd0
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.sp
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For each tape device:
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.Cd "device st0
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.sp
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For one or more cdroms:
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.Cd "device cd0
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.Sh DESCRIPTION
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This driver provides access to SCSI devices connected to an Adaptec
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174x hostadapter in either Standard or Enhanced Mode. If the controller
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is set to Standard mode (by the ECU), the driver will automatically
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switch the card to Enhanced mode during the device probe.
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.sp
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Please note that the above implies that when you are configuring a system
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with both aha and ahb drivers, the ahb driver should be listed first in the
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kernel config file. This ensures that the ahb driver will find the Adaptec 174x
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boards before the aha driver probes for Adaptec 154x boards.
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.sp
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Note that no I/O addresses are configured in the kernel config file. The
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174x uses EISA slot specific I/O which is configured automatically.
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.Sh FILES
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.Bl -tag -width Pa -compact
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.It Pa /sys/i386/isa/ahb.c
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driver source
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.It Pa /sys/i386/conf/GENERIC
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sample generic kernel config file for Adaptec based systems
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.El
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.Sh SEE ALSO
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.Xr aha 4
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.Xr cd 4
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.Xr scsi 4
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.Xr sd 4
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.Xr st 4
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.Sh NOTE
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The ahb driver does not support the newer Adaptec 274x boards. This
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is because Adaptec refuses to supply programming information without
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a non-disclosure agreement.
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