BitWiz
Experienced Member
I received a set of Kearny & Trecker CNC Machine control boards my recent PDP-8/A acquisition.
I'm looking for any documentation on these boards.
It consists of the following boards:
1-20168-06 96K x 8 Memory Board (hex wide but no connections on the extra edge connectors)
1-20668 Hard Disk Controller for SA4004 or SA4008 drive (hex wide board but only quad edge connectors)
1-20641 Analog Interface this board has industrial type connectors on the top (hex wide board but only quad edge connectors)
1-20640 This board has 4 forty pin dual inline berg type connectors on the top (hex wide board but only quad edge connectors)
1-22205 This board has a MC6809, 128K x 8 dynamic memory, 3 6850 ACIA serial chips, and several off board connectors (hex wide board but only quad edge connectors)
1-20661 Feedback Subsystem This board has industrial type connectors on the top. (hex wide board but only quad edge connectors)
Thank you.
I'm looking for any documentation on these boards.
It consists of the following boards:
1-20168-06 96K x 8 Memory Board (hex wide but no connections on the extra edge connectors)
1-20668 Hard Disk Controller for SA4004 or SA4008 drive (hex wide board but only quad edge connectors)
1-20641 Analog Interface this board has industrial type connectors on the top (hex wide board but only quad edge connectors)
1-20640 This board has 4 forty pin dual inline berg type connectors on the top (hex wide board but only quad edge connectors)
1-22205 This board has a MC6809, 128K x 8 dynamic memory, 3 6850 ACIA serial chips, and several off board connectors (hex wide board but only quad edge connectors)
1-20661 Feedback Subsystem This board has industrial type connectors on the top. (hex wide board but only quad edge connectors)
Thank you.