BusLogic SCSI host adapter subsystem
The BusLogic SCSI host adapter driver provides a Storage Device
Interface (SDI)-compliant interface to BusLogic SCSI
Host Adapters. The supported devices include the BT-445C,
BT-54x, BT-64x, BT-74x, BT-75x,
BT-946C, BT-956C, BT-948, BT-958,
and the BT-958D.
The BusLogic SCSI host adapter driver enables SDI-compliant
target drivers (such as sd01 and st01) to communicate
on the SCSI bus with target controllers and logical units. This
allows normal access to mass-storage devices using standard system interfaces
It is also possible for an application to access the SCSI bus
subsystem directly by using the pass-through interface.
BusLogic SCSI adapters support the Tag Command Queueing feature as
To disable this feature, change the value of the blc_do_tag variable
in the /etc/conf/pack.d/blc/space.c file from 1 to 0. After you have
changed the value in the file, rebuild the kernel for the Tag Command Queueing
feature to be effective.
Extreme caution should be exercised when using the pass-through interface.
It is possible to interfere with normal system I/O and cause hangs
if pass-through is used to an active device.
Pass-through should only be used to a device that is otherwise quiescent.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004