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A comment on The Polygons of Another World: IBM PC. Parent comment

Re:The Polygons of Another World: IBM PC by jacobush on Monday January 06, 2020 @05:28AM (#21968065)
There were even machines with MS-DOS which were not PC compatible. Only DOS programs using pure BIOS calls (no direct manipulation of video memory) would work.
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Re:The Polygons of Another World: IBM PC by echeese on Monday January 06, 2020 @06:35AM (#21968338)
And those BIOS calls were so much slower
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