19 Jan
2010
19 Jan
'10
4:02 p.m.
On Mon, Jan 18, 2010 at 11:41 AM, Philipp Hachtmann <hachti at hachti.de> wrote:
There might well be, but I don't have one. It would have to be a
Posibus disk interface to work.
I do have RK05s on hand, but only one 16-sector pack (vs dozens of
12-sector packs).
There were Posibus DF32s (DF32D), but mine (2 master/2 slave) are all Negibus.
Interesting. I don't even have those expansion boxes....
IIRC, it's a flavor of BM08. I don't have prints for it, IIRC, just the box.
>>>
But you cannot run OS/8 on the machine.
>>
>> No. ?I'm still trying to build up my first PDP-8/L to that level - and
>> haven't succeeded yet.
Hm, is there any sort of RK controller for the machine? > Not so... I have an 8K external box on an -8/L -
total of 12K. ?Yes,
> it's 100% DEC.
My expansion box has a pair of DF/IF switches - it would theoretically
support 16K, but there's only room in the box for two memory sets. I asked for the amount of pdp8/L .-)
3 working to one extent or another, 1 that came to me as a partial
unit (missing bezel, missing core, missing cards, broken support bar
on the chassis, damaged backplane pins, etc). That last one was
always a donor machine.
And would a PC04 do the job?
There's the PC04 and the PC05 - IIRC, the PC04 _is_ the
PDP-8-compatible version and the PC05 is for the PDP-11 (differences
in what cards are loaded in the PC0x card slots, not with the
mechanicals). The PC04 (plus the M705, M710, and M715) should be what
you need for either the -8/i or the -8/L (no differences there).
ISTR folks have been able to migrate a PC04 to a PC05 or perhaps it
was the other way. I've had no need to do either one, but in
principle, if you have all the right parts (I think one model needs
punch driver cards (M040? K040?) and the other model does not), you
can make a hybrid high-speed punch/reader that can connect to either
controller with a minimum of changes.
-ethan