PCI Parallel Port I/O card
nightrecon at hotmail.com
Thu Nov 25 20:59:50 UTC 2010
Jonathan Chen wrote:
> I've got a system which has a PCI I/O card with a parallel port
> on it. I'd like my 8-STABLE/amd64 machine to recognise this card.
> The relevant bits of "pciconf -lcv" is:
> none2 at pci0:4:6:0: class=0x070103 card=0x2000a000 chip=0x98659710
> rev=0x00 hdr=0x00
> vendor = 'MosChip Semiconductors (Was: Netmos Technology)'
> class = simple comms
> subclass = parallel port
> cap 01 = powerspec 2 supports D0 D3 current D0
> However, a verbose boot reveals:
> ppc0: cannot reserve I/O port range
> ppc0: <Parallel port> failed to probe at irq 7 on isa0
> which is due to /boot/device.hints of:
> How can I configure my system to recognise the parallel port on the
> PCI bus?
You might try using the system BIOS to assign a known unused IRQ such as
maybe IRQ 5 to the PCI slot where the card is located. Then modify the hints
entries above to "pci" and "5" and reboot.
I'm not sure whether the hint.ppc.0.at="pci" entry would need to be
expanded, but if so the information is present in the [none2 at pci0:4:6:0:]
from your pciconf -lv noted above. I believe as long as it finds and
initializes on the IRQ 5 the entry "pci" as all that is needed.
What I am unsure of is exactly what to do if the card is using some
proprietary non-standard I/O port address. Since it is an add-in card it is
highly likely that it will be on some I/O port that is different from the
default parallel port you would find built-in on a motherboard.
In this case you would need to discover what this I/O port address is (and
it might even be configurable with jumpers - see card docs). If the
motherboard already has a parallel port the PCI card will need to have I/O
ports that are not in conflict with the one on the motherboard. Then a third
line would need to be added to device.hints specifying this I/O port address
after the two lines you indicated above.
Hope it helps. Not sure it will work, but this is the approach I would
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