PDP8s for sale

From: tandem <tandem_at_comcast.net>
Date: Sat May 15 15:59:13 2004

Here's the list of stuff that I've got for sale.

I'm located in the Kansas City, Missouri area (USA).

If someone showed up with a truck & some cash, they could take it all for one price.

I don't really know what this stuff is worth now, however I do remember how hard I had to scrounge to get stuff like this back in the 80s.

So make me an offer. You pay all shipping costs. I'd rather not have to deal with international shipping, at least on any of the big stuff.

I'd prefer to sell the 8/e complete, & the 8/a complete with the RXs.

PDP8/e SN: 1654 date 7/26/71 Rack Mount
M8330 \
M8310 > KK8-E
M8300 /
M849 EMI Shield
G104 \
H619A > 4K Core Memory
G227 /
G104 \
H619A > 4K Core Memory
G227 /
M8320 Bus Loads

The 2nd backplane & the bus jumpers are missing.

All of the 8/e stuff above worked fine the last time I used it, however I haven't tested it lately.

I do have 2 M837 KM8-E Extended Memory options, however they are bad & I never got around to fixing them (see below).

The front panel is in very good condition, & the box is in good shape & complete, however the little plastic clips that hold the lid shut gave up long ago (typical), and the foam pieces inside the lid are somewhat rotted (also typical).
_____________________________________________________
PDP8/a SN 02709 (in a BA500 box) Rack Mount
M8315 KK8A CPU Board
M8317 KM8-AA Option2: Mem Extention, time share, boot, power fail
M8316 DKC8-AA Option1: front panel, serial I/O , parallel I/O, clock
M8417-AB MS8-C MOS memory (32K)
H219A \ MM8-AA 8K core memory (for the "core music")
G649 /
M8357 RX01 controller

RX01-BA Dual RX01 drives

The above PDP8/a & the RX01 drives worked fine the last time I used it. My VT52 died a few years ago, so it's been 10+ years since I've even powered it on. It has the simple front panel with the 3 switches. Hardware boots to the RX01.

I also have the KC88 Indicator Display option (missing the bezel), however it doesn't work & needs repair.

I have lots of RX01 disks, with OS/8, games, & a good selction of "core music". Maybe some diagnostics as well. Also a complete fortran set on 6 rx01s. (also have a nice selection of VAX 11/780 console floppies for use as blanks or scratch disks)

Currently, I have both the PDP/8s & the RX01 mounted in a standard DEC 50" cabinet (24u).

-----------------------------------
Documentation available:
(2) PDP8/a Miniprocessor Users Manual (big book)
PDP8/e Processor Maintenance Manual, Volume 1 (1976)
PDP8/e Processor Maintenance Manual, Volume 1 (1972)
(2) PDP8/e Internal Bus Options, Maint. Manual, Volume 2
PDP8/e External Bus Options, Maint. Manual, Volume 3
RK05 Disk Drive Maint. Manual
LAB8/e Maint. Manual
PC04/5 Maint. Manual
DF32-D,E Maint. Manual
DF32 Maint. Manual (for -8 & 8/I)
(2) PC04/5 Paper Tape Reader/Punch Maint. Manual
(2) OS/8 Handbook
OS/8 Pocket Reference Card
(3) PDP8/e Pocket Reference Card
PDP8/e Instruction List Card
(2)PDP8/e Small Computer Handbook

PDP8/a Engineering Drawings (8A500)
KC88 Indicator Display Engineering Drawings
PDP8/e Engineering Drawings
KM8E Memory Extention & Timeshare Engineering Drawings
PC8/C Engineering Drawings
KA8-E Positive I/O Bus Engineering Drawings
(2) KP8-E Power Fail/Auto Restart Engineering Drawings
KD8-E Data Break Engineering Drawings
PC04/5 Paper Tape Reader/Punch Engineering Drawings
LE8-O Line Printer Engineering Drawings
ASR/KSR Teletype Wiring Diagram Package

3 trays of paper tape diagnostics, plus paper docs
13 boxes of 'new' paper tape - DEC brand

--------------------------------------------
The following items are either "probably bad" or "definately bad" as they were removed from systems as bad during service calls over many years, & were later thrown away by the logistics guys. Most still have the red tags on them. (I worked for DEC Field Service '76 to '89). Field service repair was never an exact science, sometimes guesses were made, & some FEs liked the "shotgun approach" to repair, so some of these parts may be good. I don't have any way to test them, so they all have to be sold "as is."

BA500 box, including backplane & power supply (PDP8/a)
RX01 power supply - water damage
(2) RX01 drives - water damage
CMOS-8 WT78 motherboard, lightning damage.
M7726 RX01 logic board
M7727 RX01 r/w board - nasty brown spot
M860 part of Real Time clock
M866 DP8EA
(5) M8653 KL8M
(2) M837 KM8-E memory extention
(2) M833 Old style 8/e timing board
M832 old style 8/e Bus Loads
M8330 newer 8/e timing bd
(2) M849 PC8E
M865 20ma console board
M835 KA8-E Positive I/O bus
M868 TD8-E
M848 KP8-E Powerfail
M841 LE8-A
M8326 KD8E Data Break
M884 KG8-E parity generator dectector
H919 8/e backplane
H9194 8/a backplane
H219B/G650 16K core memory set
H212 8K core board
M8317 KM8-AA Option2: Mem Extention, time share, boot, power fail
VT52 (complete, but dead)
  ----- Original Message -----
  From: tandem
  To: cctalk_at_classiccmp.org
  Sent: Wednesday, May 12, 2004 6:37 PM
  Subject: Re: PDP8s for sale


  I'm in the process of putting together a list of what I've got for sale.

  I'm in the Kansas City, Missouri area (USA).

  I've got a PDP8/e, and a PDP8/a with RX01s. Currently, all are rack mounted in a standard DEC 50" (24u) cabinet.

  I'll get back with the list soon.

  tm
    ----- Original Message -----
    From: tandem
    To: cctalk_at_classiccmp.org
    Sent: Monday, May 10, 2004 7:13 PM
    Subject: PDP8s for sale


    I have 2 complete, working PDP8s for sale to a good home.

    Is there a good place to list them?

    tm
Received on Sat May 15 2004 - 15:59:13 BST