From:	richard AT stardate DOT bc DOT ca
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Detecting interrupt on printer port
Date:	Mon, 17 Aug 1998 05:57:48 GMT
Organization:	Rapidnet Technologies Internet
Lines:	10
Message-ID:	<35d7c57b.36585684@news.rapidnet.net>
References:	<_yLB1.90$Na1 DOT 583337 AT sapphire DOT mtt DOT net>
NNTP-Posting-Host:	wlp31.rapidnet.net
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

On Mon, 17 Aug 1998 01:19:54 GMT, "Michel Gallant"
<mgallant AT NOSPAM DOT grassroots DOT ns DOT ca> wrote:

>Hi!  I'm back, and with more problems than ever.  Below is the progam
>I'm using....  Incorporating all the suggestions (I think) made to me
>thus far regarding this program.  It still doesn't work.  I used a
>logic probe, and verified that Interrupt Request Line 07 

The problem may be that the interrupt is masked out in the PIC. 
Bit 7 (the most significant bit) of port 0x21 needs to be set to 1. 

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