Last update: 01/12/11

Emulogic ECL 3211 PDP-11 based Microprocessor Emulator

This page provides links to scans of the manuals I own for this system. I have published it for archival purposes, but these manuals contain a 1983 Copywrite notice from "Emulogic, Inc. 3 Technology Way, Norwood, MA 02062" which says their written permission is required to reproduce any of the material. I have not been able to contact anyone who knows anything about the original company, although I did find a 2nd company that used the same name for a different product line. If you know anything about the copywrite owner, or object to this material being public please get in touch!

I obtained the documentation and a couple of PDP-11 Q-bus board sets from my dad's collection. We purchased several PDP-11 systems which were being used by a company in Norwalk CT to do 6502 development work (I believe for early Apple computers) in the mid 1990s. We were just interested in spare PDP-11 systems and never attempted to use this hardware. There were three PDP-11 diskless work stations which ran RT11 based Emulogic software while connected to a PDP-11/73 running a network server under RSX-11M. This network did not use DEC hardware or software, as described in the emunet documentation below this was a 75 ohm coaxial cable network system using megalink boards. The PDP-11 based work stations contained custom boot roms so that they could boot directly from the server. I suspect, but have not confirmed that this emulator software will run on a stand alone RT11 system.

I have scanned the following Emulogic manuals in black and white at 300 DPI. I used the libtiff tools under linux to create the following PDF documents from these scans:

• ECL-3211 Microprocessor Development System User's Guide

• ECL-3211 Installation Manual

• 6500 Chip Supplement

      This file contains three related 6500 documents:
      '6500 Chip Family Supplement to the Cross Assembler Manual' CAS-2006-00
          This provides a summary of the 6500 instruction set, procedures for 
          running the 6500 cross assmbler, and sample output listings.
       '6500 Chip Family Supplement to the Cross Assembler Manual' October, 1983 
          describes addition of ability to reference low and/or high byte of a word
       '6502 User's Guide Supplement' Order Number: CSU-3006-001
          This supplement's the ECL-3211 user guide for use with the 6502 chip.
      

• 68000 Chip Supplement
  This file contains three 68000 documents: a brief software release notice, a November, 1983 '68000 Cross Assembler Manual Supplement', and the original document '68000 Chip Supplement to the Cross Assembler Manual, CAS-2004-00'. It describes the Emulogic 68000 cross assembler.

• Emulogic ECL-3211 Prom Burner Utility Program User Guide
  Describes a utility program which ran on an RT11 base workstation to burn ROM chips with a physical Rom Burner connected to the RS-232 port on the workstation. The emulator system creates an uses a *.lda file for testing and debugging. The prom burner utility can convert this to various 'rom map' formats which are compatible with different manufacturers rom burners and send the resulting output to the systems RS-232 serial port.

• Emulogic EMUNET System Guide
  This manual describes the virtual disk system used to run the ECL-3211 system on RT11 based work stations. The server could either be a PDP-11 based RSX-11M system or a VAX based VMS system. Up to eight workstations were supported. Note this manual is marked PRELIMINARY and describes a set of two boards to provide the network interface.

I have copies of the RSX-11M RL02 system disks used on the PDP-11/73 server. They contain a virtual disk directory with the following RT11 files:

I also took some pictures of the two boards sets that were in one of the work stations.

The Emulogic Inc 291555 REV A (top board of set on left)
The Emulogic Inc 291556 REV A (bottom board of set on right)
Boards were connected by 40 pin Berg connectors and cable shown on back left side

Computrol Memory Map Megalink 1 30-0096 DMA BUS (top board of set on right)
Computrol Memory Map Megalink 2 30-0097 DATACOM (bottom board of set on left)
Boards were connected by 40 pin Berg connectors and cable shown