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- Path: easy.in-chemnitz.de!mkmk!floh
- From: floh@mkmk.in-chemnitz.de (Andre Weissflog)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: SVGA chipset question
- Message-ID: <sd1ly*yI0@mkmk.in-chemnitz.de>
- Date: Mon, 01 Apr 1996 22:02:04 CET
- Reply-To: floh@mkmk.in-chemnitz.de
- References: <neilo-3103961150570001@d56-1.cpe.maroochydore.aone.net.au>
- Distribution: world
- Organization: private uucp site
- X-Newsreader: Arn V 1.04
-
- In article <neilo-3103961150570001@d56-1.cpe.maroochydore.aone.net.au>,
- Neil O'Rourke writes:
-
- [...]
- >
- > Recently, I've seen some PC demos that make me wonder about this assumption.
- >
- > These demos have _no_ flicker doing full screen animation. Is this simply
- > beam synced pixel writing, or are these video cards indeed pageswapping
- > the video RAM?
- >
- Yes, pageswapping is possible. The VESA 2.x standard normally
- gives you as many pages as will fit into videomem, you can
- write into hidden pages and display them by switching another
- page to front (beamsynced if possible I guess).
-
- But even preparing the page in main memory and copy it
- into the visible page is fast enough to cause no flicker.
-
- Bye,
- -Floh.
-
- ====//=== Andre Weissflog <floh@mkmk.in-chemnitz.de> =======
- ...//..........."Spirits in the material world"............
- \\//......90% of everything is crap (Sturgeon's Law)......
- =\\===============================================Amiga!=
-
-