Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!apple!noah
From: noah@Apple.COM (Noah Price)
Newsgroups: comp.sys.mac
Subject: Re: moving video ram on the IIci
Summary: Video comes from a fixed place in memory
Keywords: IIci video
Message-ID: <35380@apple.Apple.COM>
Date: 9 Oct 89 05:22:38 GMT
References: <986@babbage.acc.virginia.edu>
Followup-To: comp.sys.mac
Distribution: usa
Organization: Apple Computer Inc, Cupertino, CA
Lines: 17

In article <986@babbage.acc.virginia.edu> pts@watt.acc.Virginia.EDU (Paul T. Shannon) writes:
>My question:  can the video hardware be told to look at _different_
>addresses in system RAM when it goes to refresh the screen?

Nope, as you say:

> [...] is there just one address in system RAM where the
>video hardware always looks?  

The video hardware always gets its data starting at the base of Bank A
of DRAM.  This is why you must have memory in Bank A in order to use built-in
video.

noah price                                        Mac IIci Hardware Design Team
												  Apple Computer, Inc.
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noah@apple.com                                      ...!{sun,decwrl}!apple!noah