Newsgroups: comp.sys.apple2
Path: utzoo!utstat!philip
From: philip@utstat.uucp (Philip McDunnough)
Subject: Re: DMA detection
Message-ID: <1990Aug25.230613.254@utstat.uucp>
Date: Sat, 25 Aug 90 23:06:13 GMT
Distribution: na
References: <1990Aug24.011911.10594@laguna.ccsf.caltech.edu> <1990Aug24.070958.20166@utstat.uucp> <1990Aug24.192715.7036@laguna.ccsf.caltech.edu>
Organization: Statistics, U. of Toronto

In article <1990Aug24.192715.7036@laguna.ccsf.caltech.edu> toddpw@tybalt.caltech.edu (Todd P. Whitesel) writes:
>
>If the GS RAM+ is supposed to be DMA compatible, then check the TWGS. It is
>also supposed to require a certain revision level to be DMA campatible.

I apparently have the latest revisions to both, but I am still sceptical.
I would prefer to believe a software utility.
>
>The Zip Chip GS, however, it supposed to be DMA compatible already. According
>to Zip's representative on America Online, the last custom chip is due back
>from the factory on monday, and if a week of hard beta-testing works out then
>they will be going into production.

Well that's nice to hear. At least AE will have some competition. I do hope
they allow for more than a week of beta testing. Furthermore, all of these
accelerators may be nice, but they are really just band-aid solutions. Sort
of like the many sound cards available for PC's. Developers need to know
what to right to. They can't be expected to assume 8MHz GS's(cached) when
the GS is sold as a <3MHz computer.
     
>P.S. Any word on the 20 mhz 65816?

It came and went in the dark. Who knows? A GS with a 100MHz 65816 would make
little difference, unless it were sold by Apple.

Philip McDunnough
University of Toronto
philip@utstat.toronto.edu
[my opinions]