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AHB (4) | Special files and drivers | Unix Manual Pages | :man

NAME

ahb - Adaptec EISA SCSI host adapter driver

CONTENTS

Synopsis
Description
Hardware
Caveats
See Also
Authors

SYNOPSIS


.Cd device ahb
.Cd device scbus

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:

  • Adaptec AHA-1740
  • Adaptec AHA-1742
  • Adaptec AHA-1740A
  • Adaptec AHA-1742A

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.

SEE ALSO

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

AUTHORS


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