PDP 8/I backplane diagram needed!

[ComputerGeek]

Hello everybody! I've been trying to find a diagram of the PDP 8/i's wire wrap backplane, unfortunately I can't find anything.

I was wondering if anybody has a diagram of it that they could scan to me or if you can point me in the right direction to where I can find one.
Thanks!

 

[vrs42]

Hello everybody! I've been trying to find a diagram of the PDP 8/i's wire wrap backplane, unfortunately I can't find anything.

I was wondering if anybody has a diagram of it that they could scan to me or if you can point me in the right direction to where I can find one.

What level of detail are you looking for? DEC drawings can be found at
http://www.bitsavers.org/pdf/dec/pdp8/pdp8i/PDP-8I_RevCY_Engineering_Drawings_Dec71.pdf
and pages 40 and 41 specifically describe the backplane component placement.

There's also my version:
http://svn.so-much-stuff.com/svn/trunk/Eagle/projects/DEC/PDP8I/pdp8i-dec.pdf
which folds in the pre-wired options. The directory
http://svn.so-much-stuff.com/svn/trunk/Eagle/projects/DEC/PDP8I/
also has the Eagle CAD drawings, if you are looking to extract the whole netlist.

Vince

 

[ComputerGeek]

The first link wasn't what I was looking for but in the directory link, pdp8i-dec.brd is more what i'm looking for. Is there any difference between pdp8i-dec.brd and pdp8i.brd?

 

[vrs42]

Is there any difference between pdp8i-dec.brd and pdp8i.brd?

No, nothing substantive. Eagle verifies them as equivalent, though the files don't compare byte-wise.
(I suspect one was saved with a slightly newer Eagle than the other.)

Vince