PDP-8/A

PDP-8’s for sale

I’ve decided to sell of a few PDP-8’s as the hoard is getting rather large at the moment and so I’m prepared to part with the following:

  • PDP-8/M, 8KW core, M8655 serial UART, very clean machine in working order
  • PDP-8/E, 4KW core, M8650 UART, requires a full rebuild
  • PDP-8/A, 16KW core, extended memory, serial, paper tape drive and controller (non DEC). Very clean and in working order
  • RX8E + RX01 drives
  • PC8E + PC04 paper tape
  • DECmate III
  • WP78 (aka a VT78)

Email offers to toby@pdp11.co.uk . Machines are located in UK

PDP-8/A Documentation

[   ] EK-8A002-MM-02_PDP8A_UsersMan.pdf 21-Apr-2003 02:21 37M
[   ] EK-FPP8A-MM-001_FPP8-A_Maint_Sep76.pdf 24-Aug-2007 02:02 7.8M
[   ] EK-FPP8A-OP-001_FPP8-A_UsersMan_Dec76.pdf 22-Jan-2007 00:45 1.0M
[   ] EK-KL80A-OP-001_KL8-A_jan78.pdf 19-Dec-2003 06:19 3.6M
[   ] EK-KT08A-UG_jul78.pdf 19-Aug-2001 21:44 1.8M
[   ] EK-MS8CD-TM-001_MS8-C_MOS_Memory_Technical_Manual_Sep80.pdf 24-Aug-2007 17:56 2.0M
[   ] FPP8-A_EngrDrws_Feb76.pdf 06-Oct-2006 17:56 2.8M
[   ] KC8-A_engrDrws_Dec74.pdf 12-Mar-2003 19:42 1.2M
[   ] KC8-A_schem.pdf 29-Oct-2003 20:39 1.2M
[   ] MP-00KL8-A0_KL8-A_Engineering_Drawings_Dec75.pdf 14-Jun-2009 19:03 2.7M
[   ] MP00057_FPP8-A_Mar76.pdf 22-Jan-2007 00:37 6.3M
[   ] MP00415_8Asemi_Schem_Apr81.pdf 21-Jun-2005 20:26 21M
[   ] PDP8A_Schems_Apr81.pdf 28-Mar-2002 17:19 21M
[DIR] firmware/ 20-Dec-2009 17:59 -

Overview of my PDP-8/A (1 of 2)

I have two identically spec-ed PDP-8/As which I purchased a couple of years ago across ebay. The machines were originally from a CNC machine and feature 16KW of memory together with paper tape readers.

The cards fitted are as follows:

  • M8315 – KK8A PDP-8/A CPU board (hex wide)
  • M8317 – KM8AA PDP-8/A bootstrap, powerfail (hex wide)
  • M8316 – DKC8AA PDP-8/A I/O serial/parallel/clock (hex wide)
  • G650 – MM8AB PDP8A 16K Memory stack (hex wide)
  • H219B – MM8AB PDP8A 16K Memory control (hex wide)
  • G650 – MM8AB PDP8A 16K Memory stack (hex wide)
  • H219B – MM8AB PDP8A 16K Memory control (hex wide)
  • Third party paper tape drive controller

(more…)