From:	Harold Roman 978-461-0402 Ext 223 <harold AT giga-net DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	PCI Interrupt Handler
Date:	Sat, 27 Jun 1998 12:50:29 -0400
Organization:	GigaNet Inc.
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Message-ID:	<359522D5.B81D5AFD@giga-net.com>
NNTP-Posting-Host:	207.60.106.223
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Does anyone have experience writting an interrupt handler for a
PCI device?

I am having trouble getting an interrupt handler to work with my PCI
device. I have no trouble when I register my handler to another
interrupt (IRQ8 -- real time clock interrupt), but when I try to
register the handler to my PCI device (IRQ9 or IRQ10 -- depending on
which slot I move the card to) my handler never gets called.

I am using: _go32_dpmi_chain_protected_mode_interrupt_vector( irq,
newHandler ).

I have verified that the device is really generating the interrupt.

What am I forgetting? Do I have to unmask the interrupt? Do I need to
map the PCI interrupts to the IRQ interrupts?

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