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From: janices@tekig5.UUCP (Janice Singer)
Newsgroups: net.micro.pc
Subject: Questions on Interrupts and DOS
Message-ID: <79@tekig5.UUCP>
Date: Fri, 3-May-85 19:51:44 EDT
Article-I.D.: tekig5.79
Posted: Fri May  3 19:51:44 1985
Date-Received: Sun, 5-May-85 01:59:36 EDT
Organization: Tektronix, Beaverton OR
Lines: 28

Help once again!

I have three questions.

1) What does DOS do when you try to execute one of it's interrupts?
Can a user-defined interrupt-handler call a DOS Function.  What
about the BIOS interrupts.  Can I redefine a BIOS interrupt so that it
will call a DOS Function.  We have a theory that each time a DOS
interrupt is called, DOS does some "magic" and then passes control 
to the handler.  We think this "magic" is some sort of lock on its own
functions, thereby prohibiting a user-defined interrupt-handler 
from calling DOS functions.

2)Can I get a listing of DOS somewhere.

3)Where can I find answers to these types of questions.


For those who have seen my questions before, please excuse the 
reposting.

Please reply by mail, With enough interest, I will post summary to the net.


THANKS, JANICE SINGER
arpa: tekig5!janices@tektronix
csnet: janices%tekig5@tektronix
uucp: !tektronix!tekig5!janices