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AHB(4)		       FreeBSD Kernel Interfaces Manual			AHB(4)

NAME
     ahb -- Adaptec EISA SCSI host adapter driver

SYNOPSIS
     device ahb
     device scbus

DESCRIPTION
     This driver provides access to the	SCSI bus connected to an Adaptec
     AHA-1740, AHA-1742, AHA-1740A, AHA-1742A host adapters in ``enhanced''
     mode.  Tagged queueing and	synchronous SCSI transfers are supported.

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
     The ahb driver was	written	by Justin T. Gibbs.

FreeBSD	10.1		       October 15, 1998			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | CAVEATS | SEE ALSO | AUTHORS

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