> On Nov 19, 2015, at 10:00 PM, Jon Elson <el...@pico-systems.com> wrote:
>
> On 11/19/2015 10:20 PM, Jeshua Lacock wrote:
>> On Nov 19, 2015, at 2:05 PM, Todd Zuercher <zuerc...@embarqmail.com> wrote:
>>
>>> Are you sure that is actually the right listing for your pci card?
>>
>> Hi Todd,
>>
>> Yes, I am sure, if the card isn’t in the machine the listing isn’t there.
>>
>>> The listing for my card (albeit a different card) is.
>>>
>>> Try the command
>>> $ cat /proc/ioports | grep parport
>>>
>>>
>>> My system show this for the above command.
>>> 0378-037a : parport0
>>> e030-e032 : parport2
>>> e050-e052 : parport1
>>
>> I have some ports shown for the address expected (from lspci) but they
>> aren’t labeled as yours:
>>
>> d000-dfff : PCI Bus 0000:04
>> d000-d0ff : 0000:04:00.0
>> d100-d103 : 0000:04:00.0
>>
>> It is interesting to me that your lspci listing indicates "Kernel driver in
>> use: parport_p” whereas my card does not. I guess Ubuntu must not even
>> recognize it as a parport. I didn’t have any luck with trying to use the
>> address ranges shown to connect or set it to epp with the showport utility.
>>
> Oh, oh! If the Linux kernel does not recognize it as a
> parallel port, (probably because the card's BIOS extension
> ROM code is buggy) then the extended control registers won't
> be declared in the BIOS area at boot time. Thus, the
> various LinuxCNC drivers that try to intelligently handle
> the parport (such as select EPP mode) will not work
> properly.
It might be nice to add some basic parport trouble shooting instructions
somewhere. E.g.
1. Identify the parport card with:
lspci -vv
2. Check that the parport card is registered with the parport_p kernel.
Potentially return the card if it fails
3. If it passes, locate the card with:
cat /proc/ioports | grep parport
4. If you need to set to epp mode, try:
sudo ./showport rangeBegin rangeEnd e
(replace rangeBegin and rangeEnd with values discovered with the
command above
5. If it doesn’t work in epp mode still - consider returning the card
Just my 2¢ - anyone care to add to it?
> You might still be able to make this card work with various
> tricks like my pcisetup program (but you have to know the
> address of the ECR register to do that). This card may just
> be totally oddball, and only the specific Windows driver for
> that card knows what to do with it. There ARE standards,
> but a lot of outfits choose to not follow them.
Might be worth the trouble if the card wasn’t $12 and I had another card coming
today.
;)
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