ahb.4 revision 40442
Copyright (c) 1994 Wilko Bulte
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software withough specific prior written permission
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
$Id: ahb.4,v 1.8 1998/03/12 07:30:29 charnier Exp $
.Dd October 15, 1998 .Dt AHB 4 i386 .Os FreeBSD .Sh NAME .Nm ahb .Nd Adaptec EISA SCSI host adapter driver .Sh SYNOPSIS .Cd controller ahb0 .Cd controller scbus0 at ahb0 .Sh DESCRIPTION This driver provides access to the .Tn SCSI bus connected to an Adaptec 174x hostadapter in .Dq Em enhanced mode. Tagged queueing and synchronous SCSI transfers are supported. .Sh CAVEATS The Adaptec 174X is very sensitive to SCSI bus termination and cable length. It may also have difficulties operating with some modern devices that, due to their speed, expose timing problems in the controller. There are no known mechanisms for working around device incompatibilities of this nature. .Sh SEE ALSO .Xr aha 4 , .Xr ahc 4 , .Xr cd 4 , .Xr scsi 4 , .Xr da 4 , .Xr sa 4 .Sh AUTHORS The .Nm driver was written by .An Justin T. Gibbs .
Copyright (c) 1994 Wilko Bulte
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software withough specific prior written permission
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
$Id: ahb.4,v 1.8 1998/03/12 07:30:29 charnier Exp $
.Dd October 15, 1998 .Dt AHB 4 i386 .Os FreeBSD .Sh NAME .Nm ahb .Nd Adaptec EISA SCSI host adapter driver .Sh SYNOPSIS .Cd controller ahb0 .Cd controller scbus0 at ahb0 .Sh DESCRIPTION This driver provides access to the .Tn SCSI bus connected to an Adaptec 174x hostadapter in .Dq Em enhanced mode. Tagged queueing and synchronous SCSI transfers are supported. .Sh CAVEATS The Adaptec 174X is very sensitive to SCSI bus termination and cable length. It may also have difficulties operating with some modern devices that, due to their speed, expose timing problems in the controller. There are no known mechanisms for working around device incompatibilities of this nature. .Sh SEE ALSO .Xr aha 4 , .Xr ahc 4 , .Xr cd 4 , .Xr scsi 4 , .Xr da 4 , .Xr sa 4 .Sh AUTHORS The .Nm driver was written by .An Justin T. Gibbs .