[Gllug] Scanner on parallel port

[Edenyard]

Dear List,

   I'm trying to get a parallel-port scanner to work with kernel 2.4.16
on a P166 64Mb PC. The scanner is badged Philips PCA300PS PLUS but is
believed to be a Microtek 300dpi model and it has an Onspec 90c26 chip
onboard just behind the 25-way connector.

   So far, I've downloaded a patch, Linux-2.4.16-ppscsi.patch.bz2 and
applied it to the kernel source with 'patch' (no errors reported) and
recompiled the kernel with parport, parport_pc, ppscsi and onscsi
as modules. I've also downloaded sane-backends-1.0.6. The new kernel
runs fine and I can insmod scsi_mod, sg, ppscsi and onscsi with no
problems (parport and parport_pc modules are already loaded when Linux
boots). This results in a file  /proc/scsi/onscsi/1  which reports the
onscsi revision number and suggests that it's using a parallel port
at 0x378, which I believe to be correct for my hardware. However, when
I look in the file /proc/scsi/scsi, there's no mention of any device
other than my IDE CD-RW drive, which is using SCSI emulation (think
that's the right term!). Needless to say, I can't get past this point
and scanimage won't do anything when I try
scanimage -d microtek2:/dev/scanner or microtek2:/dev/sgf. Under the
doze 3.1 scanner driver, the scanner is reported to have SCSI ID=5, by
the way, and it works (relatively) well under this.

   Please can anyone point out where I've gone wrong in all of this? I
seem to be totally stumped at the moment. A Google search assures me
that parallel-port scanners WILL work with Linux these days (even though
sane-find-scanner won't report their presence!) but this has so far
beaten me! Please - what's the REAL truth in all of this!

   One web page I found regarding this problem advised me to join the
"parport" mailing list. I did that and submitted this message but so far
I seem to be the only (active) member of the list.... So many thanks
for any clues, help, etc.,

     Gerald Pye


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