AIC-7770 2.0 Netware 3.1x v 1.11

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Driver Name:              AIC7770.DSK

Driver Revision:          1.11

Supported Host Adapters:  AHA-2740/2742/2740A/2742A/2740T/2742T/2740W/2742W/2840/2842,
                          AIC-7770

Loading The Driver:       "load [path] aic7770 [options]"

Certification Status:     As of 12/07/93, this driver was in the process of
                          being Novell certified.

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This subdirectory contains Adaptec's AHA-2740/2742/2740A/2742A/2740T/2742T/
2740W/2742W/2840/2842, AIC-7770 NetWare 386 v3.11 and v3.12 SCSI disk modules
and Advanced SCSI Programming Interface (ASPI) managers.  ALL of Adaptec's
NetWare 386 drivers have full support for standard SCSI disk drives,
"NetWare Ready" drives, and removable media disk drives (including optical
drives).

The driver also contains a built-in ASPI manager.  This allows for
other NetWare Loadable Modules (NLMs) to gain access to the host adapter.
Given the flexibility of ASPI, several companies are currently providing
server-based tape backup solutions through ASPI.  SBackup is a server based
tape backup solution which is shipped by Novell with NetWare 3.11.  SBackup
supports the ASPI interface.  There are other ASPI modules already developed
or under development.  A programming specification is available from Adaptec
if you are interested in writing your own NetWare 386 ASPI module.

AIC7770.DSK has been modified to support a new SCB swapping scheme. This
improves performance of the SCSI subsystem, particularly with configurations
that include multiple hard disk drives.  The feature requires an enhanced
version of the AIC-7770 chip architecture (rev. E or higher.)

If your file server does a lot of IO operations and you want to try opti-
mizing its performance, you can adjust the "max_tags=?" and "max_notags"
command line switch.  For example:

:load aic7770 max_tags=2 max_nontags=1
           or
:load aic7770 tag_disable=ffff max_nontags=1

The first example is set for tag-queuing drives and the second case is for 
non-tag-queuing drives. The max_tags parameter can be set as 2, 4, 6, 8, or
10.  The max_non_tags parameter can be set as 1 or 2.

AIC7770.DSK also supports the latest host adapter products from Adaptec,
namely AHA-2740W/2742W/2840/2842.

Some systems may not work well with your host adapter configured to use
interrupt 15.  It's recommended that you use any available interrupt except
15 when using AIC7770.DSK with Novell NetWare 386.

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