[Linux-parport] EPP mode for PCI interface card

Michael Kastner michael.kastner at gmx.at
Sat Feb 7 18:48:27 GMT 2004


> Netmos chips NOR interrupt conditions to the PCI INTX# line, 
> irrespective of the selected mode.  To disable all interrupts/EPP, you 
> need to write 0x94 to the ECR.  This masks the nFault/nError line from 
> your camera and should solve the lockups.

Thanks a lot!
That indeed solved the annoying lockup problem.
The EPP protocol itself still doesn't work properly.
I emulated EPP in SPP mode, setting the required lines one by one.
This works without problems - but it is very slow (4ms for 1100 bytes).

Regards,
  Michael

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