Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 (Tek) 9/26/83; site tekadg.UUCP Path: utzoo!linus!philabs!cmcl2!seismo!hao!hplabs!tektronix!tekig!tekadg!jm From: jm@tekadg.UUCP (Jeff Mizener) Newsgroups: net.micro.pc Subject: What do the "reserved" PC-DOS INTs do? Message-ID: <46@tekadg.UUCP> Date: Tue, 16-Oct-84 13:53:15 EDT Article-I.D.: tekadg.46 Posted: Tue Oct 16 13:53:15 1984 Date-Received: Sat, 20-Oct-84 07:50:48 EDT Organization: Tektronix, Beaverton OR Lines: 25 ][ I've obtained a copy of the DOS 2.1 Technical Reference Manual from my local IBM dealer, and it tells me what the non-reserved INTs do. Fine. Now what do the reserved INTs do? Like INT 10? This one I know -- pass it 0Fh in AH, and it returns the number of columns in the current display in AH. That one I found out by disassembling MORE.COM. But whatif I pass it a 0Ch? I've gotten to the point of asking this by trying to patch MORE.COM (DOS 2.1 and ?) to behave like it does on UNIX. The PC Tech Journal has a patch to remove the need for the "<" (Oct 84, p. 148), and I want to eliminate some of the other dissimilarities. Why? As an intellectual exercise. I last did assembly language programming my sophomore year ('76). Humor me. I normally do analog hardware. Respectfully Submitted, Jeff Mizener / Tektronix Portables ADG / Beaverton OR {ucbvax,decvax,purdue,uw-beaver,hplabs,allegra,ihnp4,ogcvax}!tektronix!tekadg!jm ARPA: tekadg!jm.tek@udel-relay CSnet: tekadg!jm@tek "It don't mean a thing if it ain't got that swing" -- Duke Ellington