OS/2 Museum personal blog

Really Atari ST?

This blog has previously examined a very very strange code fragment in the BIOS module of DOS. To recap, when deciding whether a boot sector might have a valid BPB, DOS checks whether the first byte is a relative jump (opcode E9h) or a short jump (opcode EBh), both used by different DOS versions. But it also checks…
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History & Retro Computing2020

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Sep 22, 2020Really Atari ST? by diffuse_l11091

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