On Fri, 2011-08-26 at 07:15 +0300, Viesturs Lācis wrote:
... snip
> WARNING: All config files need .conf: /etc/modprobe.d/emc2, it will be
> ignored in a future release.
> waterjet@waterjet:~$ sudo ./showport 0378 0778 e 037a 077a e
---------------------------------------------------^^^^^^^^^^^
Get rid of the "037a 077a e", these addresses don't point to the
beginning of a proper base/extended register space and probably over
write good settings at the proper address space of 0378 and 0778

> ~~~~~
> Base @ 0x378
> Extended @ 0x778
> DPR: 255
> DSR: 255
> DCR: 255
> EPPA: 255
> EPPD: 255
> 
> CFA: 255
> CFB: 255
> ECR: 255
> ~~~~~
> Setting mode to EPP
> ECR: 255
> ~~~~~

You should not be getting the output below. The only valid port is at
0x0378 (with 0x0778 as the extended register space) as shown above. The
last ECR line should read 149 (decimal) or some other value that has
binary 100 as the top three bits.

> ~~~~~
> Base @ 0x37a
> Extended @ 0x77a
> DPR: 255
> DSR: 255
> DCR: 255
> EPPA: 255
> EPPD: 255
> 
> CFA: 255
> CFB: 255
> ECR: 255
> ~~~~~
> Setting mode to EPP
> ECR: 255
> ~~~~~
> waterjet@waterjet:~$
> 
> 
> Please note that for 0378 there is a change in number:
> Setting mode to EPP
> ECR: 255
> 
> And even now dmesg shows:
> [    8.878612] parport0: PC-style at 0x378, irq 7 [PCSPP]
> 
> 
> 
> Could it really be true that purchasing EPP-capable PCI add-in card
> would be easier?
> 
> Viesturs

A PCI card might be easier, but you would need to find one of the very
few cards that are known to work with FPGA cards.

You might try your setup on a more conventional ATX motherboard just to
validate the non-PC hardware.

-- 
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/index.html
California, USA


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