Path: utzoo!attcan!uunet!philmtl!atha!rwa
From: rwa@cs.AthabascaU.CA (Ross Alexander)
Newsgroups: comp.sys.atari.st
Subject: Re: Gadgets by Small - Possible new '030 add-on board!
Message-ID: <1275@atha.AthabascaU.CA>
Date: 24 Nov 89 20:18:00 GMT
References: <23970@cup.portal.com> <2278@hudson.acc.virginia.edu> <46dba878.14a1f@force.UUCP> <1989Nov16.180311.23182@gpu.utcs.utoronto.ca> <3795@netmbx.UUCP> <2307@hudson.acc.virginia.edu>
Organization: Athabasca University
Lines: 12

gl8f@astsun.astro.Virginia.EDU (Greg Lindahl) writes:
>Of course, I don't know if the '030 can handle different bus widths.
>My Moto books aren't that recent.

It can, and does a very nice job of it;  it can resize the bus on
a cycle-by-cyle basis.  So you could have local 32 bit wide memory
on the 68030 daughter card plus a 16-bit wide path to the ST mem
section.  This would work very nicely if you were careful to keep
this like PhysBase and the DMA pointer pointing into ST memory -
it would be easy to hack ST-Minix to do this.

	Ross