A digital logic designer and circuit simulator.

Macro assembler for the 6502, 6800, 6809, 68000, 68010, 8080/8085, Z80, Atari ASAP, PDP11, Atari Tom&Jerry DSP and generic pre-processor

A shooting, moving, people-saving, ship-exploding game

A collection of source for creating sound for a collection of four beloved arcade machines

This project is an open-source In-Circuit Emulator for the 6502, 65C02, Z80, 6809 and 6809E 8-bit processors. See:

ADPCM decoder compatible with OKI 6295

Sound chip ADPCM codec library

Xtreme Quality IMA-ADPCM Encoder / Decoder

Emulation of Atari's 1983 coin-op game I, Robot

Work in progress level viewer / editor for Atari's 1983 coin-op game I, Robot

Plugin for Octoprint to control and manage Octobuddy 3D Printer Companion by Factory Restart

BlinkStick .NET interface to control devices connected to the computer

Computational Geometry Unity library with implementations of intersection algorithms, triangulations like delaunay, voronoi diagrams, polygon clipping, bezier curves, ear clipping, convex hulls, me…

PCB design for the pal dumper created by Charles MacDonald

Major Havoc - The Promised End

A repository of macro definitions and templates for compiling OEM source code under TASMx.

A .NET based IDE wrapper for TASM (Telemark Assembler by Tom Anderson)

Level Editor for Atari's 1983 Arcade game Major Havoc

An open source .NET application for interfacing with the Fluke 900 Dynamic Troubleshooter