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Date: Fri, 08 Feb 2002 12:43:08 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: "Jean-Pierre GHYS" <jean-pierre DOT ghys AT inrets DOT fr>
Message-Id: <570-Fri08Feb2002124307+0200-eliz@is.elta.co.il>
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CC: djgpp AT delorie DOT com
In-reply-to: <a3tcqq$1tu$1@orion.inrets.fr> (jean-pierre.ghys@inrets.fr)
Subject: Re: WHY IRQ WANT RUN ????  HELP ???
References:  <a3tcqq$1tu$1 AT orion DOT inrets DOT fr>
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> From: "Jean-Pierre GHYS" <jean-pierre DOT ghys AT inrets DOT fr>
> Newsgroups: comp.os.msdos.djgpp
> Date: Thu, 7 Feb 2002 09:09:12 -0000
> 
> I try this prog ,he come from a example of use of IRQ ,he work wery well
> with IRQ 0
> but refuse to work with IRQ7 , my computer is ready with is IRQ7 on the LPT1
> where is the big bug ????

I don't see any big bugs, except that you should call init_port and
init_8259 only _after_ setting up the protected-mode handler for
IRQ 7.

The real problem in this program seems to be that it doesn't do
anything that is supposed to trigger an interrupt from the LPT port.
My references indicate that the interrupt happens when there's an
acknowledge pulse, so you should do something that causes the printer
to send such a pulse.