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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

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