Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!yale.edu!cmcl2!adm!smoke!gwyn
From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.sys.apple2
Subject: Re: GS Ram
Message-ID: <16421@smoke.brl.mil>
Date: 15 Jun 91 18:29:25 GMT
References: <9106151706.AA1157477@nike.calpoly.edu>
Organization: U.S. Army Ballistic Research Laboratory (BRL), APG, MD.
Lines: 18

In article <9106151706.AA1157477@nike.calpoly.edu>, carndt@NIKE.CALPOLY.EDU (Chris Arndt) writes:
> OK, how did you get 8 Megs??

I assume you're asking me?  (There were no cross references in your posting.)

MDIdeas' OctoRAM supports 8MB in the form of 8 1Mx8 SIMMs.  It can be
configured with 1, 2, 4, or 8 each of either 256Kx8 or 1Mx8 SIMMs.
The 1-, 2-, and 4-SIMM configurations are DMA compatible, and the 8MB
configuration is usable with DMA devices so long as no attempt is made
to use DMA with the top 4MB.  Apple's High-Speed SCSI Card understands
this, and avoids using DMA for transfers to/from the top 4MB,
presumably because its developer MattG has an 8MB OctoRAM and
therefore cared about this matter.  MDIdeas seems to have gone out of
business, but one can occasionally find some of their products still
in stock at various computer outlets.

Harris's "GS Sauce" memory expansion card also uses SIMMs, but I think
it is limited to a maximum of 4MB.