MS-DOS 3.3 boot port 2F2-2F7? \ VOGONS

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MS-DOS 3.3 boot port 2F2-2F7?

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First post, by superfury

Posted on 2015-03-22, 13:27

superfury Offline

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I notice that MS-DOS 3.3 outputs 0xFF to port 0x2F2 to 0x2F7. Anyone knows what it expects to be at those ports?

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Reply 1 of 1, by SarahWalker

Posted on 2015-03-22, 14:36

SarahWalker Offline

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There's nothing mapped there on a normal machine. It's probably leftover debug code or something. PCem just leaves those ports as unmapped.

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