On Sat, Nov 02, 2002 at 11:25:37AM -0800, Jason wrote:
> I have a Timedia PCI Parallel Port Card that I know has ECP/EPP
> capabilities (it's speced as such and it has ECP/EPP capabilities in
> windows). BUT parport_pc does not detect it. I am guessing this may
> have to do with the ECP Register being located at 0xb800 when the
> SPP register is at 0xd000 (i.e. not the +0x400 like the motherboard
> parallel port). I am wondering if there is anything I can do to
> make the ECP/EPP modes detectable as I want to use ppdev to write a
> user space driver for my scanner.
Note that you don't need to have hardware ECP support to use ECP
transfer mode; it just speeds it up.
> Here is all the info I have:
> dmesg reports:
> PCI: Found IRQ 9 for device 00:09.0
> PCI parallel port detected: 1409:7268, I/O at 0xd000(0xb800)
> parport1: PC-style at 0xd000 (0xb800) [PCSPP,TRISTATE]
^^^^^^^^ ^^^^^^^^^^^^^^^^
It knows that the ECR register is supposed to be there, but couldn't
see it. Perhaps that board needs to have ECP mode enabled with some
special utility?
Tim.
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