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Path: sserve!manuel!munnari.oz.au!mips!mips!zaphod.mps.ohio-state.edu!rpi!greg
From: greg@ecse.rpi.edu (Greg)
Subject: Re: Using IRQ 2 & VGA
Message-ID: <greg.711574918@hibp1.ecse.rpi.edu>
Keywords: 386bsd ne2000
Nntp-Posting-Host: hibp0.ecse.rpi.edu
References: <greg.711512526@hibp1.ecse.rpi.edu> <1992Jul19.114000.28123@bigtex.cactus.org>
Date: Sun, 19 Jul 1992 19:41:58 GMT
Lines: 29
james@bigtex.cactus.org (James Van Artsdalen) writes:
>In <greg.711512526@hibp1.ecse.rpi.edu>, greg@ecse.rpi.edu (Greg) wrote:
>> When I first installed 386bsd 0.1, my ne2000 card would not transmit.
>> It also sporadically gave error: isr 15 and error: isr 17 messages.
>> I suspected a problem with the interupts. My ne2000 was jumpered for
>> irq 2 and ioadx 0x300 as per the install notes. The only other boards in
>> the machine are the vga and the FD/HD serial/par do-it-all card.
>Some VGA cards use IRQ 2 for a vertical retrace interrupt. Even when
>the interrupt is not enabled in the VGA, some cards drive IRQ 2
>inactive instead of leaving the signal tristate.
>If this is the problem, you can use Scotch tape to cover the IRQ 2
>signal on the VGA's ISA connector.
>--
>James R. Van Artsdalen james@bigtex.cactus.org "Live Free or Die"
>Dell Computer Co 9505 Arboretum Blvd Austin TX 78759 512-338-8789
Well, not wanting to get glue in the connector, I cut the irq 2 trace
on the vga board. Vga seems to work and even better, my ne2000 now works
at irq 2. Thanks!
-Greg greg@megas.ecse.rpi.edu