% SIM 2.3 -- various machine simulators from Digital Equipment Corporation % Robert M. Supnik % #Sim 2.3 [Robert M Supnik]() has written a family of emulators for various machines, including the [one true processor](pdp11.html). [DEC](abbr:dead dead dead) made them available on their ftp site for a while, but they weren't there the last time I checked in 2002 (and the company is gone, so nothing survives.) =[Sources](sim_2.3.tar.Z)= These are the sources for the PDP-11 emulator, as well as sources for a PDP-8 emulator, a PDP-1 emulator, a [Data General](http://www.dg.com) Nova emulator, and an [IBM](http://www.ibm.com) 1401 emulator. =[Patches](sim_2.3.update1.tar.Z)= Some patches for the PDP-11 simulator The following archives contain disk images for various operating systems that run on these machines. The commentary about each of the operating systems is lifted verbatim from [`simh_doc.txt`](simh_doc.txt): >##UNIX(r) >UNIX(r) was first developed on the PDP-7; its first widespread >usage was on the PDP-11. UNIX(r) provides a program development >and execution environment for assembler and C programs. UNIX(r) >V5, V7, V7 for the PDP-11 is provided under license, as is, without >fee, by [Santa Cruz Organization](http://www.sco.com) (SCO), for >[non-commercial](license-change.html) use only. >Please read the enclosed license agreement for >full terms and conditions. This license must be reproduced with >any copy of the UNIX(r) V5, V6, V7 disk images. My thanks to PUPS, >the PDP-11 UNIX(r) Preservation Society of Australia, which provided >the disk images, and to SCO, which provided the license. > > * [Unix Version 5](uv5swre.tar.Z) > * [Unix Version 6](uv6swre.tar.Z) > * [Unix Version 7](uv7swre.tar.Z) > >##OTHER OPERATING SYSTEMS > >[RT-11](rt11swre.tar.Z) >: RT-11 is the PDP-11's single user operating system. It provides > a program development and execution environment for assembler, > BASIC, and FORTRAN programs. RT-11 is provided under license, > as is, without fee, by Mentec Corporation, for non-commercial > use ONLY ON THIS SIMULATOR. Please read the enclosed license > agreement for full terms and conditions. This license agreement > must be reproduced with any copy of the RT-11 disk image. My > thanks to John Wilson, a private collector, who provided the > disk image, and to Mentec Corporation, which provided the > license. > >[Nova RDOS](rdosswre.tar.Z) >: RDOS is the Nova's real-time mass storage operating system. > It provides a program development and execution environment > for assembler, BASIC, and FORTRAN programs. RDOS is provided > under license, as is, without fee, by Data General Corporation, > for non-commercial use only. Please read the enclosed license > agreement for full terms and conditions. This license agreement > must be reproduced with any copy of the RDOS disk image. My > thanks to Carl Friend, a private collector, who provided the > disk image, and to Data General Corporation, which provided > the license. > >[ESIX](esixswre.tar.Z) >: ESI-X is an interactive program for technical computation. It > can execute both immediate commands and stored programs (like > BASIC). ESI-X is provided as both source and as a binary loader > format paper-tape image. For more information see the > documentation included with the program. My thanks to Dave > Waks, who wrote the program, and to Paul Pierce and Tim Litt, > who recovered the source from its archival medium. > >[OS/8 for the PDP-8](os8swre.tar.Z) >: OS/8 is the PDP-8's mass storage-based operating system. It > provides a program development and execution environment for > assembler, BASIC, and FORTRAN programs. OS/8 is provided under > license, as is, without fee, by Digital Equipment Corporation, > for non-commercial use only. Please read the enclosed license > agreement for full terms and conditions. This license agreement > must be reproduced with any copy of the OS/8 disk images. My > thanks to Doug Jones of the University of Iowa, who provided > the disk images, and to Digital Equipment Corporation, which > provided the license. > >[LISP for the PDP-1](lispswre.tar.Z) >: PDP-1 LISP is an interactive interpreter for the Lisp language. > It can execute both interactive commands and stored programs. > The startup instructions for LISP are complicated; see the > documentation included with the program for details. My thanks > to Peter Deutsch, who wrote the program, to Gordon Greene, who > typed it in from a printed listing, and to Paul McJones, who > helped with the final debug process. > >[SIM8; a PDP-8 simulator for the PDP-7](sim8swre.tar.Z) >: PDP-7 SIM8 is a PDP-8 simulator for the PDP-7. It implements > an 8K PDP-8/I with keyboard, teleprinter, reader, punch, and > line printer. It provides an interactive console environment > for control and debug of the simulated PDP-8. For more > information see the documentation included with the program. > My thanks to Dave Waks, who wrote the program, and to Paul > Pierce and Tim Litt, who recovered the source from its archival > medium.