6 Sep
2006
6 Sep
'06
7:36 p.m.
Hey! Finally a question I can answer!
You could always by-pass the built-in
controller in the H-27 box, and
just interface to the bare drives.
Gary
Can the H27 (dual 8" floppy drive) be hooked up
to an H8? Or was that
strictly an H11-only device?
No, the H-27 was strictly for the H-11. I believe it has a built-in
controller (Z-80 based, if I remember correctly) inside the H-27 unit
itself. The controller card for the H-11 (or PDP) was a glorified
parallel interface.
Of for that matter, can an H27 be hooked up to a non-heath Micro
PDP11?
6 Sep
6 Sep
8:02 p.m.
On 9/7/06, Gary L. Messick <Gary at realtimecomp.com> wrote:
You could always by-pass the built-in
controller in the H-27 box, and
just interface to the bare drives.
Yes, the bare drives are standard 50-pin 8" drives, a-la TM-848s or
similar, but DEC never made a controller for 8" floppies that talked
to a naked drive. I do have a 3rd-party Qbus controller from a
Dataram-branded box that does, though.
I'm still pretty sure that the H-27 Qbus controller card is software-compatible
with one of the DEC Qbus floppy controllers. The electrical interface,
though, is specific to the H27.
-ethan
Of for that
matter, can an H27 be hooked up to a non-heath Micro
PDP11?
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