PDP-11 vs cpu11

PDP-11

A collection of PDP-11 related files (by BrentSeidel)

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cpu11

Revengineered ancient PDP-11 CPUs, originals and clones (by 1801BM1)

pdp-11 Verilog Hdl Reverse Engineering cpucore Retrocomputing

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PDP-11		cpu11
	Project
1	Mentions	2
3	Stars	146
-	Growth	-
1.8	Activity	5.3
over 2 years ago	Latest Commit	5 months ago
	Language	Verilog
GNU General Public License v3.0 only	License	GNU General Public License v3.0 or later

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

PDP-11

Posts with mentions or reviews of PDP-11. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-11-05.

Blinkenlights and PDP-11 Assembly Language.
2 projects | /r/PDP11 | 5 Nov 2021

I got inspired to make my own version of blinkenlights. This is before I heard about projects like the blinkenbone or PiDP-11. My version with 3D models to print and the Ada source code is here, Pi-Mainframe I think got simh running on it, booted RSTS/E and am now exploring PDP-11 assembly language for the first time since about 1985. Some of my routines are here, PDP-11 stuff. I hope that I've learned a few things since 1985 ;-)

cpu11

Posts with mentions or reviews of cpu11. We have used some of these posts to build our list of alternatives and similar projects.

Dec F11 precise replica in Verilog, based on reverse engineering of real dies
1 project | news.ycombinator.com | 12 Jun 2022
I finally got a PDP-8i (sort of).
1 project | /r/retrobattlestations | 12 Apr 2021

There are quite a few HDL implementations, eg CPU11 and this list.

What are some alternatives?

When comparing PDP-11 and cpu11 you can also consider the following projects:

xxdp - XXDP was, and remains, the PDP-11 diagnostic operating system. This project attempts to recover XXDP sources and documents.

open-fpga-verilog-tutorial - Learn how to design digital systems and synthesize them into an FPGA using only opensource tools

z88dk - The development kit for over a hundred z80 family machines - c compiler, assembler, linker, libraries.

serv - SERV - The SErial RISC-V CPU

Reverse-Engineering-Tutorial - A FREE comprehensive reverse engineering tutorial covering x86, x64, 32-bit ARM & 64-bit ARM architectures.

hdl - HDL libraries and projects

unix-v1 - Restoration of 1st Edition UNIX kernel sources from Bell Laboratories

livehd - Live Hardware Development (LiveHD), a productive infrastructure for Synthesis and Simulation

Pi-Mainframe - Simulated mainframe computer based on a Raspberry Pi

riscv - RISC-V CPU Core (RV32IM)

openlane - OpenLane is an automated RTL to GDSII flow based on several components including OpenROAD, Yosys, Magic, Netgen and custom methodology scripts for design exploration and optimization.

zipcpu - A small, light weight, RISC CPU soft core