Overview of old unix versions which can be run on simulated (or real) pdp-11 computers.
The UNIX-HATERS Handbook, a review on https://athornton.dreamwidth.org/14272.html is also worth reading.

See also his ANCIENT COMPUTER MVSEVM on https://mvsevm.fsf.net/
If you want an account on one of these systems, please email Adam Thornton <athornton@gmail.com> and ask.
All systems are emulated, on Raspberry Pi and Linux.

1: Multics MR 12.6f (Honeywell 6800 DPS-8/M)
2: TOPS-20 7.1 (PDP-10 KL-10)
3: TOPS-10 7.03 (PDP-10 KA-10)
4: ITS (PDP-10 KA-10)
5: OpenVMS 7.3 (MicroVAX 3900)
6: Unix v7 (PDP-11/70)
7: Unix 2.11bsd (PDP-11/70)

Announced on the TUHS mailing list. https://www.tuhs.org/pipermail/tuhs/2019-August/018253.html

Guides how to install or run older UNIX versions in simh.
Also the UNIX Programmer's manual of V1-V6. V1-V6 are available as nroff output converted to html. V4-V6 are also available as troff'ed PDFs.
The site also has information about Plan 9 and pdp-6/pdp-10.

Blog about computer history, describing the source of cat(1), Lisp, RSS, Ada Lovelace's first program and more.

J1 is a small (200 lines of Verilog) stack-based CPU, intended for FPGAs. A complete J1 with 16Kbytes of RAM fits easily on a small Xilinx FPGA. Some highlights:
       Extremely high code density. A complete system including the TCP/IP stack fits in under 8K bytes.
       Single cycle call, zero cycle return
       Instruction set maps trivially to Forth
       Cross compiler runs on Windows, Mac and Unix
       Basic software includes a sizeable subset of ANS Forth and a portable TCP/IP networking stack.

Interesting minimal computer using TTL SSI parts. Includes VGA output.

The project contains the VHDL code for a complete DEC PDP-11 system: a PDP-11/70 CPU with memory management unit, but without floating point unit, a complete set of mass storage peripherals (RK11/RK05, RL11/RL02, RK70/RP06, TM11/TU10) and a basic set of UNIBUS peripherals (DL11, LP11, PC11), and last but not least a cache and memory controllers for SRAM and PSRAM.

The design is FPGA proven, runs currently on Digilent Cmod A7 , Arty , Basys3 , Nexys4 DDR , Nexys4 , Nexys3 , Nexys2 and S3board boards. See section Complete Systems for more information.

5th Edition UNIX, 7th Edition UNIX, and 2.11BSD UNIX are known to boot, the hardware should also support DEC RT11 and RSX-11M, see section Running Systems for more information.

This is a retrocomputing project, rebuilding hardware from the late 70s and running historical software. To get into the tune see Figure D-1, a 11/70 console, and Figure F-2, a baseline system setup.

The links are associated with a timeline visualization, a curated data set, and a repository detailing the evolution of 15,596 unique documented facilities (commands, system calls, library functions, device drivers, etc.) across 93 major Unix releases tracked by the Unix history repository.

Simulation of the Apollo Guidance Computer (AGC) and its display/keyboard (DSKY).

An AGC (Apollo guidance computer) emulator written in C++. The package contains only the emulator.

This wiki is an experiment to create a means for knowledgeable people to enter their information into some kind of a knowledge base. This is however, not the relatively formalized tone and style imposed by Wikipedia. Sentences starting with "I seem to recall" are perfectly welcome here - and articles do not have to be in the descriptive, encyclopedic style Wikipedia enforces. On the contrary, it is preferred that many of the articles be references, guides, helpful hints, suggestions, tutorials and so on.

If you have any information you want to contribute to this wiki, please, contribute it. We'd much rather remove or modify a dozen potentially unsuited submissions than miss out on a single good one. We hope this wiki grows into a useful resource for everyone interested in classic computing, no matter what their level of knowledge may be; it is meant to be all-encompassing. -- Tore & Lucky