ESDI Interface

Sigrok Disk decoder

Datapoint 2200 Schematics and Documents

The Bellwether mouse

A Fully Open-Source Verilog-to-PCB Flow

Files and documentation for Pico-Dirty-Blaster Workshop

A digital logic designer and circuit simulator.

Norsk Data ND-120 CPU Design Documents. Modern Logisim and HDL implementation

MOVED TO GITLAB

VHDL synthesis (based on ghdl)

Design Flow for Atmel/Microchip ATF15xx CPLDs using Yosys and the Atmel Fitter

A collection of scripts and tools for Atmel ATF150x and GAL Programmable logic devices, some of the only standing active 5V programmable logic parts still available.

Code and hardware files for the tester of DEC flipchips in the B/R/S series

Simulation of VT52 and VT100 terminal hardware.

Self-hosting metacompiled Forth, bootstrapping from a few lines of C; targets Linux, Windows, ARM, RISC-V, 68000, PDP-11, asm.js.

Small Incompatible Timesharing System

The new home of Tim Mann's CatWeasel support tools for TRS-80 floppy preservation. The Releases area contains binaries for MS-DOS and x86_64 Linux.

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

IBM 3705 FEP Emulator based on SIMH V3 and interface for Hercules 390

Backup of http://www.dunnington.info/public/DECROMs/

VT52 hardware simulation.

FX68K 68000 cycle accurate SystemVerilog core

This repository contains my efforts to create an "idiot proof bare metal m68k cross compiler toolchain of sorts."

NetBSD mopd modified to run on Linux, so you can netboot a VAX from Linux.

DEC PDP-11 XXDP (DOS-11) file system manipulation program

MAME - Multiple Arcade Machine Emulator

Control a historic teletype device (Telex) with a Raspberry Pi or PC in Python3