Article View: comp.sys.amiga.tech
Article #7415Re: Simple Frame Buffer boards
From: L98CC
Date: Tue, 11 Dec 1990 23:11
Date: Tue, 11 Dec 1990 23:11
36 lines
1631 bytes
1631 bytes
In article <920@boing.UUCP>, dale@boing.UUCP (Dale Luck) says:
>
===== some stuff deleted. =====
>
>This is a MAJOR benefit. Ease of programming.
>
I agree!
===== some more stuff deleted ======
>IMHO the benefits of a complete memory mapped frame buffer far outweigh
>the costs giving up 1-2M of address space on the bus. The benefits of
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Assuming
1) I am willing to give up 2 meg space but not expansion ram space.
2) I want the design to be compartible with all brands of Amiga.( Maybe
some little mods for A500 and A1000. )
3) I do not want to violate any hardware design rule set by CBM. ( i.e.
do not use reserved address space etc.. )
4) I am actually designing a frame buffer :-)
Where do I find the 2 meg of address space to give up? ( This is neither a
crude cynisism or a flame. I really do not know. )
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!julius.cs.uiuc.edu!psuvax1!psuvm!cunyvm!l98ccReferences:
<916@boing.UUCP> <23699@grebyn.com> <918@boing.UUCP> <1411@mpirbn.mpifr-bonn.mpg.de> <920@boing.UUCP>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!julius.cs.uiuc.edu!psuvax1!psuvm!cunyvm!l98cc From: L98CC@CUNYVM Newsgroups: comp.sys.amiga.tech Subject: Re: Simple Frame Buffer boards Message-ID: <90345.181101L98CC@CUNYVM.BITNET> Date: 11 Dec 90 23:11:01 GMT References: <916@boing.UUCP> <23699@grebyn.com> <918@boing.UUCP> <1411@mpirbn.mpifr-bonn.mpg.de> <920@boing.UUCP> Organization: City University of New York/ University Computer Center Lines: 36