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
