Article View: comp.terminals
Article #1253Re: ESC key on VT200 and VT300 terminals.
From: Doug Gwyn
Date: Wed, 24 Apr 1991 19:59
Date: Wed, 24 Apr 1991 19:59
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In article <1991Apr23.054148.3339@bilver.uucp> bill@bilver.uucp (Bill Vermillion) writes: >Why do you say that it is not that way by definition. I understood the >"definition" is that the Control key is just to strips the 3 most significant >bits, therefore control [ will always give ESC. No, there is no such definition for the function of the "control" modifier key on a keyboard. While virtually all ASCII terminal keyboards apply the control key as you describe for the ALPHABETIC characters, there is considerable variation in the control+special_character mappings use to produce other ASCII codes, such as NUL, DEL, FS, GS, and perhaps ESC. Some terminals function as you described and others map these differently.
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!spool.mu.edu!snorkelwacker.mit.edu!paperboy!hsdndev!cmcl2!adm!smoke!gwynReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!spool.mu.edu!snorkelwacker.mit.edu!paperboy!hsdndev!cmcl2!adm!smoke!gwyn From: gwyn@smoke.brl.mil (Doug Gwyn) Newsgroups: comp.terminals Subject: Re: ESC key on VT200 and VT300 terminals. Message-ID: <15967@smoke.brl.mil> Date: 24 Apr 91 19:59:13 GMT References: <DAVIS.91Apr17212532@pacific.mps.ohio-state.edu> <15892@smoke.brl.mil> <1991Apr23.054148.3339@bilver.uucp> Organization: U.S. Army Ballistic Research Laboratory, APG, MD. Lines: 11