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- Path: sparky!uunet!mcsun!news.funet.fi!funic!sauna.cs.hut.fi!elektra.cs.hut.fi!hmallat
- From: hmallat@elektra.cs.hut.fi (Hannu Mallat ~ PurpleHaze!)
- Newsgroups: comp.sys.atari.st
- Subject: Re: Falcon030, resolutions, TRUE color, and DSP
- Date: 18 Dec 1992 16:17:01 GMT
- Organization: Helsinki University of Technology, CS lab
- Lines: 31
- Distribution: inet
- Message-ID: <1gsthtINNk4c@sauna.cs.hut.fi>
- References: <1992Dec18.074213.26617@elroy.jpl.nasa.gov> <1grcjlINNn2m@usenet.INS.CWRU.Edu> <1gsmv1INN688@usenet.INS.CWRU.Edu>
- NNTP-Posting-Host: elektra.cs.hut.fi
-
- In <1gsmv1INN688@usenet.INS.CWRU.Edu> aa399@cleveland.Freenet.Edu (Len Stys) writes:
-
- >Ok, how much memory would it take to get games to be created with the
- >640x480 256 color mode?
-
- >How much more memory does the TRUE color mode take?
-
- Sigh. It's just simple maths...
-
- In 256 colour mode each pixel needs 8 bits for its colour index
- (2**8=256), which equals one byte. Thus, one screen takes
- 640x480=307200 bytes=300k. Now, arcade games use double-buffering, in
- which one screen is shown when the other is being updated, to avoid
- flickering when the screen is drawn. So, 600k just for displaying things.
- Add to that sampled sounds (I bet you don't hear much chip music
- anymore with Falcon... :), which could take a *LOT* of space. And the
- actual sprite, background etc. graphics. And some space for the code, too.
- One meg won't last for long.
-
- Now, wasn't that true colour 16-bit? I guess you can make the
- calculations by yourself...;)
-
- btw, updating 300k of graphics might take a while... In arcade games
- the frame rate has to be pretty high, or the game is crap. I suppose
- 320*200 resolution is more realistic for shoot'em ups and such. But I
- wouldn't mind seeing a decent strategy game on 640*480...
- --
- With a purple umberella and a fifty cent hat, \\ Hannu Mallat
- Livin', lovin', she's just a woman. // hmallat@niksula.hut.fi
- Missus cool rides out in her aged Cadillac. \\ J{mer{ntaival 5 C 333
- Livin', lovin', she's just a woman. // 02150 Espoo, Finland
-