At least some CS/80 discs support the CS/80 low-level
initialization
command. It's generally not clear how to do this, but if you go trawl
Google Groups for "mediainit vGD" you may find a transcript of how I
got HP-UX 7.05 to low-level format a 7946 disc so long ago that it's
on topic.
The documentation does specify a "Format" command for CS-80 devices. I
have used a bus system analyzer to format a number of drives this way. I
don't recall formatting a 9133 but, I would be very suprised if it
didn't work the same way. I have a HP9134 sitting here that was
formatted last month using the analyzer. The command sequences are very
unforgiving so doing it with an analyzer takes a LOT of patience!
See yas,
SteveRob