Article View: comp.sys.atari.st
Article #2519ATARI ST GRAPHICS ?
From: Robert Thompson
Date: Thu, 20 Jul 1989 13:10
Date: Thu, 20 Jul 1989 13:10
29 lines
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2322 bytes
Atari ST Myarc Geneve
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hi res: 640x400 monocrhome hi res: 512x424, 16 colors
med res: 640x200 4 colors 512x212, 16 colors
med res: 256x212, 256 colors
lo res: 320x200 16 colors lo res: 256x192, 2 of 16 colors
for each row of 8 pixels
(TI 99/4A compatible)
text modes: software simulated text modes: 32x24
40x24
80x24
sprites: software simulated sprites: hardware based,
multi-colored
hardware graphics: hardware graphics:
*horizontal* lines only *all* lines (true?)
multi-colored sprites
pattern fill
The ST uses a display generator The Geneve has a dedicated (and
chip to draw the screen from part VERY powerful) graphics chip
of CPU ram, but the generator has which draws the screen from
no other special abilities. dedicated video RAM (fast,
auto-incrementing addressing),
in addition to providing many
other useful services. The
Geneve also has a custom 98 pin
chip which (among other things)
provides a very nice interface
between CPU and video processor.
Technical Details
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!rutgers!bpa!temvax!pacsbb!rthomps From: rthomps@pacsbb.UUCP (Robert Thompson) Newsgroups: comp.sys.atari.st Subject: ATARI ST GRAPHICS ? Keywords: MYARC GENEVE 9640, ATARI ST Message-ID: <664@pacsbb.UUCP> Date: 20 Jul 89 13:10:42 GMT Organization: PACS - Philadelphia Area Computer Society, Penna. Lines: 29