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From: madd@bucsb.bu.edu.UUCP (Jim Frost)
Newsgroups: net.micro.pc
Subject: Return codes from resident routines on INT 16H
Message-ID: <458@bucsb.bu.edu.UUCP>
Date: Wed, 3-Sep-86 19:14:24 EDT
Article-I.D.: bucsb.458
Posted: Wed Sep  3 19:14:24 1986
Date-Received: Thu, 4-Sep-86 00:39:24 EDT
Reply-To: madd@bucsb.UUCP (Jim Frost)
Distribution: net
Organization: Boston Univ Comp. Sci.
Lines: 17


Another question for you wizards:  what should a resident routine that
intercepts INT 16H return for registers and flags?  I want to make it seem
that no key had been pressed.  Also, what INT numbers are safest?  Currently
I use INT 6FH, but there are some problems sometimes.  Is there better?
How can you tell if an interrupt is being used (if there is any other besides
return-interrupt-vector function in MS-DOS).

Thanx.

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