Re: alt 255 ; question

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#283

From: Ralf Brown
Date: Thu, 10 Sep 1992 02:30

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In article <9zsnn8l.mbk@netcom.com> mbk@netcom.com (Miles Kehoe) writes:
}I believe the Alt-255 trick is a keyboard BIOS thing. When the original

Correct.

}keypad and generate the BYTE with that value. If you want a space,
}you enter Alt-032; uppse case A is Alt-065. (BTW, the values had 
}to be 3 digit, I believe)

No, they can be any length.  The only state the BIOS keeps is the current
value of the digits pressed so far, modulo 256 (i.e. you can enter Alt-4097
and get a Ctrl-A).  If the accumulated value is 0 when the Alt key is
released, the BIOS doesn't put a key into the keyboard buffer.
-- 
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Newsgroups: alt.msdos.programmer
Path: arc1-ca.pugleaf.net!sparky!uunet!usc!wupost!udel!rochester!cantaloupe.srv.cs.cmu.edu!ralf
From: ralf+@cs.cmu.edu (Ralf Brown)
Subject: Re: alt 255 ; question
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Date: Thu, 10 Sep 1992 02:30:40 GMT
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