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PS/2 8580 Possible Interupt Conflict issues?

C

Culbrelai

Experienced Member
Joined
Jun 18, 2017
Messages
65
Location
SE Michigan, USA
So I have an IBM PS/2 8580 386, a Future Domain MCS-700 SCSI adapter, 3 SCSI devices including a CD-ROM and 2 HDDs.

Also have an XGA-2 and a bunch of other MCA cards. I've been having trouble getting the XGA-2 to play nice with all of the other MCA children.

I removed all adapters until just the SCSI adapter and the XGA-2 were in the system.

I'm having an issue where when both are in the system, and the SCSI adapter has at least 1 SCSI device attached, the computer fails to boot.

It gets stuck here: (after the obligatory memory check of course this is after a soft restart)

https://i.imgur.com/V2KgwRT.jpg

The cursor just blinks and blinks, nothing else doing and I know it should not take that long, even on a 386.

If I take out the XGA-2, the computer successfully boots the copy of DOS that resides on the hard disk hosted by the SCSI adapter.
If I have both cards in but nothing attached to the SCSI adapter, the computer also boots (to floppy) succesfully.

Got any idea on what this could be? Because I'm at about my limits of troubleshooting... Thanks in advance.
 
Last edited:
I think the IDs are fine, as I just removed the XGA-2 and installed my XGA-1 I have, and it booted fine with the exact same settings as with the XGA-2, no different jumper settings, nothing.

Also installed Windows 95 on one of the drives, and both read and wrote to the other. Installed 95 off the CD drive.

What's termination, though?
 
Pretty sure that’s the option disk I’ve been using.

This is actually bizarre, the recessed sticker says “8580-321”
But the on the back of the computer it says “8580-111”

It also has one of those “factory reconditioned by IBM stickers on the back.

Ive tried a bunch of different SCSI ID settings, nothing seems to change. What is termination though?
 
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