WTB: DEC PC04 Paper Tape Reader/Punch

Marden P. Marshall mardy at voysys.com
Fri Aug 15 15:52:13 CDT 2008


On Aug 15, 2008, at 4:27 PM, Tony Duell wrote:

>>
>> 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.

Yes, I did mean to say "OMNIBUS" as it is going into a PDP-8/e.

-Mardy

>
>
> -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
>>>
>>>
>>
>
>




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