9 Oct
2007
9 Oct
'07
6:37 a.m.
Hi, Jerome:
Then perhaps you can describe your other hardware - backplane
with power supply. Do you have a BA23 or a BA11 box?
Or
something else? What about the serial ports, etc.?
The PDP-11/23-PLUS comes in one BA11. I have another BA11 plus the boards to
connect both, but this is not important for this matter, I think.
I have too one PDP-11/53 ( not sure at all) who uses one BA23. It's state is
not good in excess, but I don't want to dismantle it... by now.
I agree that the RQDX1, RQDX2 and RQDX3 require a distribution
panel of some sort to change from the 50 pin cable to
the
34 pin / 20 pin cable required by MFM hard drives and floppy
drives. That panel is usually part of a BA23 box. A BA123 box
uses a distribution board which can handle 4 drives, but the
hard drives also require an additional READY / WRITE PROTECT
(very small) panel.
Probably a 3rd party controller like the Dilog DM01 is what
you are looking for. But I suspect that these days, an RQDX3
is probably more easily found - except for that internal
distribution panel which is also required if you are using
a BA11 box.
Well, this is something :-) I didn't hear about the DM01 previously. This is
helpful, but I accept pleasantly other suggestions and, of course, any offer
about items like this one (for example). Don't forget the ESDI option that
I've mentioned previously.
And, of course, we ever have the option of one SCSI board, but I am not sure
about what was the better option for one QBUS PDP. QMD Perhaps ? I have too
one SCSI Hard Disk but not sure even if it works :-)
Thanks and Greetings
Sergio