Messages in this thread | | | Date | Thu, 16 Apr 1998 13:32:03 -0700 | From | "Leonard N. Zubkoff" <> | Subject | Re: 2.1.93.. |
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Date: Thu, 16 Apr 1998 22:24:47 +0200 From: Martin Mares <mj@atrey.karlin.mff.cuni.cz>
OK, I give up. I was suffering of a local blindness ;)
But yet another silly question: Is there any chance it will work if you have two _different_ SCSI cards in single computer?
<groan> You would have to ask that. Unfortunately, there's no way to predict what the system BIOS will do. It depends on the order that each of the BIOS extensions on the host adapters are executed by the system BIOS, and there's no standard for this at all. Some system BIOS identify all the BIOS extensions on peripheral cards and then sort them by increasing size, others by decreasing size, and some simply by slot order. Then they must be copied to low memory for execution. Whichever BIOS extension gets control first will generally probe for devices and then install the disks the BIOS understands by hooking the appropriate interrupt(s). Note also that once a BIOS extension executes it can shrink itself back to a smaller resident size, so fitting everything sometimes depends on the recognition order. It's not pretty at all. Certin combinations of cards can only be used in a specific order in certain motherboards because of this. It's a tech support nightmare.
Leonard
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