Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mcsun!ukc!kl-cs!jonathan
From: jonathan@cs.keele.ac.uk (Jonathan Knight)
Newsgroups: comp.binaries.ibm.pc.d
Subject: Re: Sys Req - key.
Message-ID: <1200@kl-cs.UUCP>
Date: 7 Dec 89 14:37:02 GMT
References: <1989Dec6.071852.25430@agate.berkeley.edu>
Organization: University of Keele, England
Lines: 20

From article <1989Dec6.071852.25430@agate.berkeley.edu>, by c60c-4ab@e260-4c.berkeley.edu (Scott Drellishak):
> 
> On my XT clone, the Sys Req key doesn't generate any ascii or scan codes,
> and, according to Peter Norton's Programmer's Guide to the IBM PC (not
> actually called that, but close enough), it generates INT 15H with AH equal
> to 85H.  It says nothing about the use of this key, however.


I use it as a ^C key when my program isn't writing to the screen or
reading the keyboard.  Hold down CTRL and hit SYS REQ.  Looks like
a ^C, acts like a ^C but isn't a ^C.  Because its done by an interrupt
it should not require DOS to read it and process it, it clears
the outstanding chars from the input buffer too.  Play with it
and see what use it is, it's certainly more useful that ^C.

-- 
  ______    JANET :jonathan@uk.ac.keele.cs     Jonathan Knight,
    /       BITNET:jonathan%cs.kl.ac.uk@ukacrl Department of Computer Science
   / _   __ other :jonathan@cs.keele.ac.uk     University of Keele, Keele,
(_/ (_) / / UUCP  :...!ukc!kl-cs!jonathan      Staffordshire.  ST5 5BG.  U.K.