From: "Michel Gallant" <mgallant AT NOSPAM DOT grassroots DOT ns DOT ca>
Newsgroups: comp.os.msdos.djgpp
References: <_yLB1.90$Na1 DOT 583337 AT sapphire DOT mtt DOT net> <35d7c57b DOT 36585684 AT news DOT rapidnet DOT net> <6rba5l$b9v$1 AT groa DOT uct DOT ac DOT za>
Subject: Re: Detecting interrupt on printer port
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Message-ID: <ztpC1.35$%Y2.685903@sapphire.mtt.net>
Date: Wed, 19 Aug 1998 01:01:19 GMT
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NNTP-Posting-Date: Tue, 18 Aug 1998 22:01:19 ADT
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To: djgpp AT delorie DOT com
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Fabian Nunez wrote in message <6rba5l$b9v$1 AT groa DOT uct DOT ac DOT za>...

>??? Are you sure about that?  I'm pretty sure that '1' on port 21h
>means "mask out this IRQ"... (although I'm in the lab at uni, and my
>inter57 is sitting several K's away at home)
>
>CHeers
>Fabian
>--
>Fabian Nunez, MSc student     Collaborative Visual Computing
Laboratory,
>fabian AT cs DOT uct DOT ac DOT za           University of Cape Town
>
>"Ram Disk" is NOT an installation procedure!

Fabian, you are right.  I looked it up myself in a reference manual I
have.  I did incorporate an interrupt-unmasking routine into my
program (CLEARING bit 7 of 0x21)  and my program still doesn't work.
Any other suggestions?  Thanks.

Michel Gallant