🚀 go-pugleaf

In article <sridhar.728173274@fir.cs.scarolina.edu> sridhar@cs.scarolina.edu (M. A. Sridhar) writes:

>   toy@crd.ge.com (Raymond L. Toy) writes:
>
>
>   >I borrowed an Adaptec 1542B to use in my machine for a while to see
>   >how things would go.  Sadly, they don't go very well.  
>
>   >I made a backup and then reformatted the disk using as suggested in
>   >the manual.  Restored from backup, and everything was just fine.
>   >Everything would work just as it used to.  Except when I pound on the
>   >disk reading and writing files.  Then, BOOM---internal processing error.
>
>   >It seems that under heavy disk activity, the whole system is flakey.
>   >It causes some program to halt with access violations.  When the disk
>   >activity stops, and I rerun the exact same program, everything goes
>   >just fine.  Other times the whole thing stops with an internal
>   >processing error.  Usually trap e at the same location.
>
>   I have never had good success with getting the Adaptec to work. I have
>   precisely the same symptoms as you describe, and with a similer
>   environment -- only I have *two* IDE drives on my IDE controller, in
>   addition to the SCSI drive. And I have a Wangtek tape drive. I have
>   just about given up on getting the SCSI drive to work under OS/2 for
>   now; I'm hoping that the 2.1 beta will behave better.
>
>   Oh -- I do know this is not a hardware problem. The system works fine
>   under DOS and Dell Unix.
>
We just had a similar problem here.  The system worked fine under DOS and
Unix, but the BETA would crap out.  What I found was that the DMA speed on
the adaptec was set from 5.0MB/sec to 5.7MB/sec.  Changing it to 5.0MB did
the trick.  The jumper is J5 (I believe), pins 12 and 13 open.

good luck...
--
 
Todd Scalzott, Systems Programmer                     todd@kastle.com   
Kastle Development Associates                         ...!uunet!friend!todd