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- Path: sparky!uunet!spool.mu.edu!olivea!charnel!sifon!CC.UMontreal.CA!kosmatoo
- From: kosmatoo@JSP.UMontreal.CA (Kosmatos Odisseas)
- Newsgroups: comp.sys.atari.st
- Subject: Re: Blitter - what does it do besides bitcopy?
- Summary: Rotating sprites, etc..
- Message-ID: <1992Dec19.164607.11094@cc.umontreal.ca>
- Date: 19 Dec 92 16:46:07 GMT
- References: <1gvg4tINNqmm@usenet.INS.CWRU.Edu>
- Sender: news@cc.umontreal.ca (Administration de Cnews)
- Organization: Universite de Montreal
- Lines: 58
-
- In article <1gvg4tINNqmm@usenet.INS.CWRU.Edu> aa399 (Len Stys) writes:
-
- >A Blitter is a bitmap copying and transformation chip?
- >Is this all that it does?
- >
- >Most other game systems use a very fast graphics chip to take care of
- >the sprites, scaling, scrolling, etc.
- >
- >The SNES has a CPU speed of 3.58 MHz! Everyone looked at this speed
- >and laughed, but the graphics chip showed that the speed of the processor
- >did not matter too much at all.
- ---
-
- What this tells us is that this game machine is limited to shoot-em-ups and
- simple games where there are a bunch of sprites moving around all the time.
- But what about games with 3-D graphics (no sprites, just a lot of filled-in
- polygons to draw) that require many calculations to rotate, scale, etc.
- These are not 2D sprites so the graphics chip won't help any. (I guess)
-
- The Falcon has an optional 16Mhz 68882 which could help in 3D graphics.
-
- >The Sega Genesis is based on a 68000 CPU at the speed of 7.6 MHz.
- >This system pretty much relies on the programmer for rotation, etc.
- >BUT I'm pretty sure it still has a graphics chip. And I'm POSITIVE
- >that the Sega CD-ROM player has an especially designed graphics chip
- >for rotation.
- >
- >Recently, Nintendo announced to the world that it has developed a graphics
- >chip that will be powerful enough for 3-D imaging.
- ---
-
- Well this changes everything. If they have that, then they would probably
- be able to do some fancier things than the Falcon could manage. (well see)
-
- >If the Falcon030 does NOT have a graphics chip that is responsible for
- >these features, won't the video game systems pass this system by?
-
- Sure, it would'nt be hard for someone who is only making a game machine
- to 'beat' a more general device like the Falcon: The Falcon is also good
- at other things, it was not solely designed as a game machine.
-
- >Also, if the JAGUAR has a 64-bit RISC graphics chip like we all suppose
- >that it will, the Falcon030 will NOT be able to run any of those games.
- >
- >I don't know. If I was Atari, I'd try to get the Falcon030 and Jaguar
- >to both have the same graphics chip. This way game developers would be
- >more willing to make games for these systems. And Atari would have an
- >edge over systems.
- ---
-
- They have an edge in other things with the Falcon. For example, as a
- home computer that can do other things as well. (And a dsp + sampler)
-
- --
-
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-