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Manual Pages  — AHB

NAME

ahb – Adaptec EISA SCSI host adapter driver

CONTENTS

SYNOPSIS

To compile this driver into the kernel, place the following lines in your kernel configuration file: device scbus device ahb

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

ahb_load="YES"

DESCRIPTION

This driver provides access to the SCSI bus connected to an Adaptec AHA-174X host adapters in " enhanced" mode. Tagged queueing and synchronous SCSI transfers are supported.

HARDWARE

The ahb driver supports the following SCSI host adapters:

SEE ALSO

aha(4), ahc(4), aic(4), cd(4), da(4), sa(4), scsi(4)

AUTHORS

The ahb driver was written by Justin T. Gibbs.

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.

AHB (4) July 4, 2004

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