Path: utzoo!utdoe!generic!pnet91!ericmcg
From: ericmcg@pnet91.cts.com (Eric Mcgillicuddy)
Newsgroups: comp.sys.apple2
Subject: Re: Apple DMA SCSI & Quantum HD: HELP !
Message-ID: <403@generic.UUCP>
Date: 26 Jan 91 13:10:15 GMT
Sender: root@generic.UUCP
Organization: People-Net [pnet91], Etobicoke, ON
Lines: 13

>A friend has assembled a hard disk based on a Quantum 80 Meg 5.25" SCSI
>drive, including the soldering of an appropriate cable between the drive
>and an Apple SCSI card. The setup works fine when connected to an Rev C
>(non-DMA) SCSI card, but fails with the newer DMA card.

Was this formerly an internal drive that had a power supply and case added on?

The DMA SCSI card terminates its end of the chain, does your hard drive
terminate its end? Signal reflections from the unterminated end can easily
screw up the communications signals.

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