>On Tue, 8 Oct 1996, John F. Woods wrote:

>> I gather that IRQ7 is what the PC interrupt controller chip generates
>> when it sees a glitch on an IRQ line.  I have changed the motherboard

>Yes.  If the PIC cannot determine the source of an interrupt (the IRQ line
>is not asserted long enough), it will generate a fake IRQ7.  Consult your
>Intel 8259 data sheets for more information.  I left mine at home.

>If the message is only appearing upon opening or closing the device, I 
>don't see much cause for worry.

	I have three pee cees at home running NetBSD/OpenBSD, and all three
of them generate stray IRQs when serial devices are opened or closed.

	Likewise, I've never lost data over it.

Cheers,
Phil
--
Phillip F Knaack
Database Programmer, Information Development for Extension Audiences (IDEA)
Iowa State University Extension