Path: utzoo!attcan!uunet!samsung!dali.cs.montana.edu!uakari.primate.wisc.edu!aplcen!haven!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.sys.apple2
Subject: Re: DMA & GS-Ram (was Re: Apple Profile hard drive)
Keywords: Apple ProFile Hard Drive GS DMA SCSI GS-Ram
Message-ID: <13129@smoke.BRL.MIL>
Date: 15 Jun 90 19:01:06 GMT
References: <862@kluge.fiu.edu> <13116@smoke.BRL.MIL> <865@kluge.fiu.edu>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 9

In article <865@kluge.fiu.edu> carpentr@serss0.fiu.edu (Ralph P Carpenter) writes:
>Do you have any more info on how to distinguish a problem GS-Ram
>besides flicking the DMA switch on the SCSI board?

I don't, but perhaps some other reader does.  (Probably some patch wiring
exists on the DMA-comp0atible GS-RAM, or something like that.)

If the system works solidly with the DMA switch off, and reliably flakes
out with it on, that's pretty good proof of a DMA-related problem..