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Article #357Re: alt 255 ; question
From: Joe Morris
Date: Wed, 02 Sep 1992 12:56
Date: Wed, 02 Sep 1992 12:56
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garrem@aix.rpi.edu (Matthew Olsen Garretson) writes: >Is this ALT-255 thing a function of DOS or is it built into the keyboard BIOS? >If the former is the case, it doesn't work with DOS 5 + 4DOS 4 + ansi.sys . >If the latter is the case, it doesn't work with my chips. The ability to generate an arbitrary byte is the responsibility of the program which fields the keyboard interrupts. If nobody is trying to be cute, it's the BIOS which interprets <ALT>+digits as a one-byte character. Programs which take over the keyboard hardware interface -- such as Windows -- are responsible for providing the same feature. I can't speak for 4DOS because I don't run it. BTW: the <ALT>+digit construct works only for the *keypad* digit keys. It will not work if you try to use the digit keys on the top row of the standard QWERTY keyboard. Joe Morris / MITRE
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Newsgroups: alt.msdos.programmer Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.INS.CWRU.Edu!agate!linus!linus.mitre.org!jcmorris From: jcmorris@mwunix.mitre.org (Joe Morris) Subject: Re: alt 255 ; question Message-ID: <jcmorris.715438566@mwunix> Sender: news@linus.mitre.org (News Service) Nntp-Posting-Host: mwunix.mitre.org Organization: The MITRE Corporation References: <92238.135238MCHAMINA@ESTEC.BITNET> <exuptr.390.714845407@exu.ericsson.se> <17h4vvINNp71@matt.ksu.ksu.edu> <2mwyznh@rpi.edu> Date: Wed, 2 Sep 1992 12:56:06 GMT Lines: 23