In reply to [EMAIL PROTECTED]'s message of Tue, 24 Sep 1996

I'll just repeat what others have already stated: it is very likely
your cables and termination.  I was having very similar problems which
got worse with the newer kernels.  I finally bought new high quality
cables and active terminators (expansive), which improved the problems
considerably, but did not cure them.  More recently I upgraded to a
new motherboard, so I bought a cheap 53c810 controller, which has now
completely eliminated all problems and dramatically increased
performance as well.

So if you have PCI slots on your board, then you should upgrade to a
$60 PCI 53c810 (or 53c815) card and sell your Adaptec card to some DOS
user.  Otherwise you will probably just have to check your termination
and cables, but you may not be able to do much about it.

On the other hand I just noticed your messages are also reporting
unexpected interrupts.  Have you checked to make sure that nothing
else is using that interrupt?  You probably should try removing all
unnecessary card and see if the problem goes away.

>       Can anyone help me here?  I've got an AHA1542 with a quantum XP32150W
> as the only device on the chain.  I keep getting errors like the following:
> 
> scsi : aborting command due to timeout : pid 198, scsi0, channel 0, id 0, lun 
> 0 Write (10) 00 00 27 88 b0 00 00 76 00
> scsi : aborting command due to timeout : pid 198, scsi0, channel 0, id 0, lun 
> 0 Write (10) 00 00 27 88 b0 00 00 76 00
> SCSI host 0 abort (pid 198) timed out - resetting
> SCSI bus is being reset for host 0 channel 0.
> Sent BUS DEVICE RESET to target 0
> Sending DID_RESET for target 0
> aha1542_intr_handle: Unexpected interrupt
> tarstat=0, hastat=0 idlun=10 ccb#=5

>       Are there any settings I need to tweak in order to rid myself of 
> these timeout errors?  
> 
>                                       Mike

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