From: "Thorsten Erdmann" <thorsten DOT erdmann AT gmx DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Interrupts on EPP-port
Date: Tue, 7 Mar 2000 21:39:25 +0100
Organization: EWE TEL
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To: djgpp AT delorie DOT com
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> Your code, as posted, doesn't enable the appropriate IRQ in the
> Interrupt Controller in the initialization code, and your interrupt
> handler doesn't EOI the Interrupt Controller before it returns.  So
> it's no surprise it isn't working.
Besides that you should send an EOI to the controller after initialization.
It costed me two weeks to discover that the controller was blocked sometimes
after init. So my program sometimes work sometimes not.

bye
Thorsten