Date: Sun, 20 Jun 1999 14:19:08 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: Mark Usher <marku AT magnet DOT at>
cc: djgpp AT delorie DOT com
Subject: Re: Problem getting IRQ 7 handler to trigger
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On Sun, 20 Jun 1999, Mark Usher wrote:

> ///////////////////////////////////////////////////////////////////////
> // Handler routine
> 
> void card_handler()
> {
>    ScreenPutChar(65, (BLUE << 4) | WHITE, 78, 6);
> }

This handler doesn't send the EOI (End Of Interrupt) command to the 
Interrupt Controller.  So after the first interrupt, you won't any
more interrupts.