Article View: alt.msdos.programmer
Article #282Re: alt 255 ; question
From: Keith Rice
Date: Thu, 10 Sep 1992 00:22
Date: Thu, 10 Sep 1992 00:22
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In <9zsnn8l.mbk@netcom.com> mbk@netcom.com (Miles Kehoe) writes: >Jon Freivald <jaf@jaflrn.UUCP> writes: >>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 >I believe the Alt-255 trick is a keyboard BIOS thing. When the original >PC came out, you could press Alt and enter any decimal number on the numeric >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) The values can be entered with one digit. I just checked. >Anyway.. Alt-255 is just a special case of using the capability >of the kb BIOS to enter character codes arbitrarily. -- D. Keith Rice -- University of North Texas -- drice@ponder.csci.unt.edu ----------------------------------------------------------------------- (new .sig construction delayed due to union contract disputes)
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Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!spool.mu.edu!wupost!cs.utexas.edu!mercury.unt.edu!ponder!drice From: drice@ponder.csci.unt.edu (Keith Rice) Newsgroups: alt.msdos.programmer Subject: Re: alt 255 ; question Message-ID: <drice.716084546@ponder> Date: 10 Sep 92 00:22:26 GMT References: <2mwyznh@rpi.edu> <JTHqqB1w164w@jaflrn.UUCP> <9zsnn8l.mbk@netcom.com> Sender: usenet@mercury.unt.edu (UNT USENet Adminstrator) Distribution: usa Organization: University of North Texas Lines: 23