Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!pdn!boake2!sherpa!rac From: rac@sherpa.uucp (Roger Cornelius) Newsgroups: comp.binaries.ibm.pc.d Subject: Re: undocumented DOS call for switch character Message-ID: <152@sherpa.uucp> Date: 24 Sep 89 18:58:29 GMT References: <933@sl10c.concurrent.co.uk> Organization: Personal System Computing, St. Petersburg, FL Lines: 23 From article <933@sl10c.concurrent.co.uk>, by asc@concurrent.co.uk (Andy Chittenden): > Does anybody know what the undocumented DOS calls are to set and get > the switch character? > > Thanks in anticipation, Andy From inter489.arc, the interrupt list regularly posted in c.b.i.p.c. and maintained by Ralf Brown: --------------------------------------------- INT 21 - DOS 2+ internal - GET SWITCHAR AX = 3700h Return: AL = FFh unsupported subfunction DL = current switch character --------------------------------------------- INT 21 - DOS 2+ internal - SET SWITCHAR AX = 3701h DL = new switch character Return: AL = FFh unsupported subfunction --------------------------------------------- -- Roger A. Cornelius rac@sherpa uunet!sherpa!rac