PDP 11/44

Henk Gooijen henk.gooijen at hotmail.com
Wed Mar 11 01:49:34 CDT 2009

> From: gtn at mind-to-mind.com
> To: cctech at classiccmp.org
> Date: Wed, 11 Mar 2009 01:21:30 -0400
> CC: cctalk at classiccmp.org
> Subject: PDP 11/44
> Someone I know has a PDP 11/44 available.. might end up on EBay.
> Apparently 2 racks pulled out in working condition, including the
> following cards.
> m-7090 m 7094 m-7093 m 8743 m 8743 m 7098 m 7097
> m 7096 m 902 m 7800 m 7900 m 7902 m 7903 m 7258
> He's looking for $750 but I'm not sure I'll have the space. What do
> you think?

Two words: too expensive!  Three words: way too expensive.
If the list of modules is all there is, the CPU is not complete!
The basic boards of the 11/44 are: M7090, M7093 ... M7098.
M7095 is missing!
Further, the M7900, M7902 and M7903 are just a part of the RK611
interface, so if you have RK06 or RK07 you need to find the missing
boards (m7901, M7904), else you have to remove that 9-slot backplane,
as it is of no other use than functioning as RK611 controller.
The M7258 is the LP11 controller. Again without a suitable printer
to connect, this board is not of much use either.
In the first rack is the 11/44, I assume. What's in the other rack?
For $750 you get an incomplete 11/44, some boards of not much use
(probably), and a simple (and slow) DL11 (M7800).
I would not pay $750.
my 2 ct :-)
- Henk

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