15 Aug
2014
15 Aug
'14
3:43 p.m.
There is anotehr disk ROM. HP98228. It's a much
larger ROM,
it's bank-switched (inside the module) to fit it into the
avaialble address space. That one, I think, works with HPIB
drives. I am told it is very hard to fid, though.
Just to expand on that a little, the HP98228A supports both the
9885 and the 9895 floppy drives, the former using a parallel
GPIO interface, and the latter an HP-IB interface. By extension,
the 98228A is also required to support the 9134A which is a
Winchester drive that emulates 4 9895 drives over HP-IB.
BLS