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List: linuxppc-dev
Subject: PCI-to-parallel port problem
From: tas () mindspring ! com (Timothy A ! Seufert)
Date: 2000-12-19 8:49:43
Message-ID: v04220800b664cfa8ae01 () [10 ! 0 ! 0 ! 42]
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At 8:00 AM +0100 12/19/00, Michel Lanners wrote:
>On 18 Dec, this message from Thomas Berkefeld echoed through cyberspace:
>> I have FASTPCI 4008 PCI parallel port card from Dolphin Peripherals. To
>> use the card,
>> the manual tells to modprobe parport_pc.o with io-address and irq.
>> Unfortunatley
>> parport_pc.c cannot be compiled with
>> kernel 2.4.0-test11 on my G4 Mac (a header is missing).
>> Furthermore /proc/pci says the interrupt number is 53 which seems a bit
>> high.
>
>Depends. PowerMacs have at least 32 interrupts, but some have more.
>Anybody know for sure on the G4?
It's 64 on Uni-N based Macs, which includes most G4s, because they
use an OpenPIC interrupt controller:
...
PowerMac using OpenPIC irq controller
OpenPIC Version 1.2 (4 CPUs and 64 IRQ sources) at efe2d000
...
There are a few "Yikes!" G4 machines which use the same motherboard
as the B&W G3. The interrupt controller in these also supports 64
IRQ sources.
Tim Seufert
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