Parallel port cdroms

I have a machine incorporating an  industrial pc, and the cdrom that
came with it is a King Byte parallel port job. There appears to be a
problem with this. 

It had scsi drivers loaded and didn't work I decided it was ide, and
also tried the paride driver, but no go. I tried the cdrom in a pc - the
bios recognized it, but it wouldn't read. I tried a known good cdrom in the
backpack, but that combination did nothing either.

I am hoping to be able to mount it under tomsrtbt to check the hardware.
I have read of /dev/bpack-something - that's as close as I got. Do they
run ide or scsi over the parallel port link? Can anyone point me at
meaningful  reading?
-- 

	With best Regards,


	Declan Moriarty.