Port of LLVM to the MC6809 and HD6309 processors

Like Mac USB Prober.app, but cross-platform and up-to-date.

Cross-platform Rust implementation of the DriveWire 3/4 server for TRS-80 Color Computer / Dragon. SSH-console-ready via vserial channels.

A latency-hating emulator of: the Acorn Electron, BBC Micro and Archimedes, Amstrad CPC, Apple II/II+/IIe and early Macintosh, Atari 2600 and ST, ColecoVision, Enterprise 64/128, Commodore Vic-20 a…

Some programs to test various functionality of TRS-80 CoCo 1,2,3

Website for pid.codes

ATAboy is a user-friendly bridge that allows legacy CHS only style IDE (PATA) hard drives to be connected to a modern computer as a standard USB Mass Storage device.

A cross-platform GUI library for Rust, inspired by Elm

HSTX-native HDMI output library for RP2350 with hardware TMDS encoding and audio support

Bitbanged DVI and HDMI on the RP2040 Microcontroller

Circuits and programmable Logic for use with Tandy computers.

A diagnostics cartridge for the Tandy/Radio Shack Color Computer 1,2, and 3 and the Dragon

Simple 2.4GHz Spectrum Analyzer based on the nRF52832 in the PixlJs allmiibo emulator

Prince of Persia Smoothmod fork for stable game timing on faster Apple II variants

LZW reference code in C++

Source code collections from Data Compression Book by M. Nelson and J.L. Gailly.

A workbench for developing 6502 code.

Bit-banged 100 MBit/s Fast Ethernet transmitter and UDP framer for Raspberry Pi RP2040/RP2350

Tandy CoCo2 Composite boards

A software/hardware tool for testing vintage floppy disk drives

Microsoft BASIC for 6502 Microprocessor - Version 1.1

The original source code of Microsoft GW-BASIC from 1983

This repository contains the source code for the Dragon 64 versions of the Microsoft 16K BASIC Interpreter for the Motorola 6809 (aka BASIC-69 and Extended Color BASIC).

Sample app which sets up 2 CDC channels and allows USB RESET

Lisp in 99 lines of C and how to write one yourself. Includes 21 Lisp primitives, garbage collection and REPL. Includes tail-call optimized versions for speed and reduced memory use.

Portable file server with accelerated resumable uploads, dedup, WebDAV, SFTP, FTP, TFTP, zeroconf, media indexer, thumbnails++ all in one file

6809 / 6309 Protocol Decoder (for logic analysis capture files)

My TRS-80 Colour Computer games and other software

Whitesmiths C compiler. One of the earliest commercial C compilers available.