3 Jun
2008
3 Jun
'08
7:39 p.m.
CPU instruction sets. What I do not have, though, is
either the
appropriate disk drive set (HP 9121S or 9121D, according to the manual)
nor any of the invasm packs.
The difference between the -S and -D is that the former is a single
drive, the latter is a double. They're both single-sided 3.5" drives,
IIRC usiong something odd like 70 tracks.
IIRC the controller board, case, etc are the same between the 2 versions
(there may be a link to shift). The -S has a little space to store disks
where the second drive would go.
[...]
There's a 9121D on eBay (6 days out) for $60
w/shipping, which is...
do-able but seems a shade hefty. Maybe they're getting harder to find
these days, I don't know. As for the invasm packs, for all I know they're
I didn;t think the 9121 was particularly hard to find, but that may be
becasue I am overrun with them (I think I have 5 9121Ds...) It is
remarkably heave fro its zize, though (it's built in a metal chassis,
there's a big mains transformer (linear PSU), etc), which might explain
any high shipping charges.
-tony