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From: n8541751@unicorn.wwu.edu (Where there is darkness, light)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: How to determine if an int is available?
Message-ID: <1990Oct23.082712.6073@unicorn.wwu.edu>
Date: 23 Oct 90 08:27:12 GMT
References: <31523@netnews.upenn.edu>
Distribution: usa
Organization: Monkey Tree Computer Services
Lines: 23

tony@scotty.dccs.upenn.edu (Anthony Olejnik) writes:

>I have several 'add-on' cards in my PC (XT clone).
>I'd like to add an additional card which *ONLY* supports INT 2.
>Is their an easy way to determine what interrupts (and base I/O
>addresses, if possible) are already in use?

Just put the card in, and see if everything works first.  Maybe you don't have
a problem.  If it doesn't work then remove all the cards on which interrupts
are easy to set, and put them back one-by-one.

Check the machine after each card goes in to
see that everything still works, adjusting jumpers or dip switches as
needed to resolve conflicts.  (Do this with the cover off and it won't
take you very long).  The mouse is a good one to put in last, since it
can typically use several different interrupts.  I've got about six cards
six cards in my machine including some really wierd stuff, and it all works.

Kris Bruland.
-- 
Kriston M. Bruland        |    . .         . .      . . .      .       . .
n8541751@unicorn.wwu.edu  |    .   .     . .        .        . .       .   .
8541751@nessie.wwu.edu    |    .             .         .     .   .     .