DEC PDP-11/83

This amazing machine I was able to acquire was used at a small local Telephone Company around 25 miles away to run their custom written billing software. It was written in DEC Dibol programming language. Unfortunetally none of the source code or backups have been found up to this point. The large Telephone Company in my area had one as well, and used to write and support the billing software that was used in the smaller Telephone companies in the area. I estimate around 10 PDP's were in use as part of this local cooperative setup. The Operating System in use as part of the setup was a version of TSX+

As you can see from the pictures below it was in a "barn find" state and required LOTS of cleaning. The keyboard was a total loss due to "water" damage that ate away all the traces on the plastic membrane. The VT320 was in fairly good cosmetic shape, but is fairly dim. The PDP-11 itself is MAXED out with an 11/83 cpu, 4MB of ram, etc.

Included Boards:

• Backplane: H9278-A, with a BA23-A Breakout Board
• 11/83 CPU Board (M8190-AE) - CPU J11 CPU 18MHz with 2 boot & diagnostic ROMs, FPJ11-AA
• Clearpoint DCMA-EQ4 4MB RAM Board
• DEC M8027 - Printer Interface Board
• Emulex QD21 - ESDI /QBUS MSCP DISK CONTROLLER
• Dilog CQ1610 - 16 Port Serial Controller Board (Emulates DH11)

• DEC RQDX3 - MFM Controller Board
• CMD CQD-440 SCSI Controller
• DEC M7516 - DELQA Ethernet Board

Photos