15 Aug
2008
15 Aug
'08
1:52 p.m.
On Aug 15, 2008, at 4:27 PM, Tony Duell wrote:
Yes, I did mean to say "OMNIBUS" as it is going into a PDP-8/e.
-Mardy
I think the M840 is the PDP8 controller. I don't remember the
Unibus part
number, but I should have one.
It is, that's why it's the PC8E (fits the Omnibus of the PDP8/e,
amongst
others).
The unibus controller is an PC11 (I forget the M-number). But the
pumch/reader for that is a PC05, and contains rather more
electronics than
a PC04. It's possible to turn a PC05 into a PC04 by removing some of
the
flip-chip cards (including the 3 'specials', addiong an M113 (I
think) and
doing a bit of wire-wrapping. I did this, having got a PC05, an PC8E
interface, plenty of other Unibus paper tape readers and interfaces
but no
other paper tape system for the PDP8/e.
What machine does the OP want to use it with? Going o nthe 'minimum
number of errors to make it consistent', I assumed he simply meant
Omibus
rahter than Unibus, and wants the PDP8/e compatible one.
-tony
Paul
On 8/12/08, Marden P. Marshall <mardy at voysys.com> wrote:
Does anyone have a DEC PC04 paper tape reader/punch that they
would be
interested in letting go? I'm also looking for the matching PC8-E
(M840)
UNIBUS controller card.
Thanks,
-Mardy