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From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.sys.apple2
Subject: Re: Memory Expansion Apple IIgs
Message-ID: <15555@smoke.brl.mil>
Date: 22 Mar 91 22:13:50 GMT
References: <9103221118.AA03241@Informatik.Mathematik.Uni-Mainz.DE>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 9

In article <9103221118.AA03241@Informatik.Mathematik.Uni-Mainz.DE> Kapffer@INFORMATIK.MATHEMATIK.UNI-MAINZ.DE writes:
>Does that mean that the DMA compatiblity of AE's 6MByte RAM card (attained
>by performing its own address decoding) is of no use in combination with
>Apple's DMA SCSI card ?

No, but it does mean that Apple's High-Speed SCSI Card will not use DMA
when transferring data between the SCSI bus and the upper 2MB of your RAM.
(That is a rather unlikely case anyway.)  The only effect should be
somewhat slower SCSI I/O on rare occasions.