5 Dec
2010
5 Dec
'10
12:32 p.m.
On 5 Dec 2010 at 15:20, Roger Merchberger wrote:
ISTR something about the fact that the parallel zip
drive was
basically a SCSI device internally, but used level shifters or
whatever was necessary to make it I/O compatible with the parallel
port.
If I'm not mistaken, I think the driver even "talked to the drive"
with SCSI commands over the parallel port... but I could be full of
condensed milk.
However, if one were to attempt to reverse-engineer that device, it
might be old and/or slow enough to glean some clues on how to
interface parallel -> SCSI...
This was discussed some years back in the Linux fora when the Zip
drive was considerably more popular.
The command set is, in fact, SCSI for the parallel ZIP, relying on an
ASIC called the "VPIO" chip. I don't think there's any practical way
to bypass it to turn a parallel ZIP into a SCSI one.
--Chuck