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Article View: comp.sys.atari.st
Article #21223

Blitter - what does it do besides bitcopy?

#21223
From: Len Stys
Date: Sat, 19 Dec 1992 15:46
57 lines
2290 bytes

Hi, all...
A Blitter is a bitmap copying and transformation chip?

Is this all that it does?

Which chip is responsible for the STe's hardware scrolling?


Most other game systems use a very fast graphics chip to take care of
the sprites, scaling, scrolling, etc.

My question is:  If ATARI is interested in making this system a competitor
in the computer entertainment market, why didn't Atari include one?


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.

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.


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?


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.




And wouldn't a graphics chip capable of helping out with all of these
features save on memory?  And programmers' time?

I doubt there is any way that a FUTURE 64-bit RISC graphics chip can be
added to the Falcon030 at another time...



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Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!agate!usenet.ins.cwru.edu!cleveland.Freenet.Edu!aa399
From: aa399@cleveland.Freenet.Edu (Len Stys)
Newsgroups: comp.sys.atari.st
Subject: Blitter - what does it do besides bitcopy?
Date: 19 Dec 1992 15:46:37 GMT
Organization: Case Western Reserve University, Cleveland, OH (USA)
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Message-ID: <1gvg4tINNqmm@usenet.INS.CWRU.Edu>
Reply-To: aa399@cleveland.Freenet.Edu (Len Stys)
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