Path: utzoo!utgpu!watserv1!watmath!att!att!tut.cis.ohio-state.edu!ucbvax!PUCC.PRINCETON.EDU!MQUINN%UTCVM
From: MQUINN%UTCVM@PUCC.PRINCETON.EDU
Newsgroups: comp.sys.apple2
Subject: Re: non-DMA at 4 Megs (GS)
Message-ID: <9011040741.AA24846@apple.com>
Date: 4 Nov 90 07:36:31 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
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T
 .CIS.OHIO-STATE.EDU>

On Sat, 3 Nov 90 12:15:58 GMT Desdinova said:
>
>   The limit of memory expansion is based on one and only one thing-
>only four rows of RAM are directly supported by the IIgs and it's
>DMA scheme.  Four rows = 1Meg with 256K chips, or 4Meg with 1Meg chips
>(SIMMs or what not).

So, I guess the answer to the question is that the 256k on board isn't DMA
compatible?  Or is it, and only the first 3.75megs on a RAM card are DMA
compatible?

>--
>Jawaid Bazyar               | Blondes in big black cars look better wearing
>Senior/Computer Engineering | their dark sunglasses at night. (unk. wierdo)
>jb10320@uxa.cso.uiuc.edu    |      The gin, the gin, glows in the Dark!
>   Apple II Forever!        |                             (B O'Cult)
>Comp.Sys.Apple2- Home of the Unofficial Apple II Developer Support Team (DST)

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