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1.\"
2.\" Copyright (c) 1994 Wilko Bulte
3.\" All rights reserved.
4.\"
5.\" Redistribution and use in source and binary forms, with or without
6.\" modification, are permitted provided that the following conditions
7.\" are met:
8.\" 1. Redistributions of source code must retain the above copyright

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19.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26.\"
27.\" $FreeBSD: head/share/man/man4/ahb.4 158762 2006-05-20 09:39:28Z brueffer $
28.\"
29.Dd July 4, 2004
30.Dt AHB 4
31.Os
32.Sh NAME
33.Nm ahb
34.Nd Adaptec EISA SCSI host adapter driver
35.Sh SYNOPSIS
36To compile this driver into the kernel,
37place the following lines in your
38kernel configuration file:
39.Bd -ragged -offset indent
40.Cd "device scbus"
41.Cd "device ahb"
42.Ed
43.Pp
44Alternatively, to load the driver as a
45module at boot time, place the following line in
46.Xr loader.conf 5 :
47.Bd -literal -offset indent
48ahb_load="YES"
49.Ed
50.Sh DESCRIPTION
51This driver provides access to the
52.Tn SCSI
53bus connected to an Adaptec
54AHA-174X host adapters in
55.Dq Em enhanced
56mode.
57Tagged queueing and synchronous SCSI transfers are supported.

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