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

Command-line cross-compiler of assembly language for Z80 CPU.

A replacement for the classic TMS9918A/TMS9929A VDP, powered by a Raspberry Pi Pico

Sample source code games Atari 2600

The Amiga Diagnostic tool

Firmware to allow functional testing of ZX Spectrum hardware and related clones. See the wiki for full details.

Apple Disk Transfer ProDOS (ADTPro)

HippoPlayer - a module player for the classic Amiga

ProTracker 2.3F for Amiga

Chipdisk Nacional Vol.1

Improved Apple //c (ROM 4X) and Apple IIc Plus (ROM 5X) firmware.

Source code for the popular SwinSID SID replacement

Z80 system using ATmega as IO/boot controller. 4 chips total.

A 6502 emulator (library) written in assembly for ARM Cortex-M4

USB C64 SID hardware player (Tic Tac Edition)

File commander for ZX Spectrum Next.

Create standard or custom PET/CBM Editor ROMs

DolphinDOS 2 is a kernal ROM replacement for the C64 and 1541 disk drive to speed up disk operations.

This is the SMON source code for the C64

Music player for ZX Spectrum Next

A project to create unencumbered open-source ROMs for use on selected retro computers

C64 MUSIC EMULATOR FOR AMIGA

TitchySID is a library written in MASM32 which can play SID chiptunes from the Commodore 64. It aims to be the smallest SID player library available which can be added easily to any development pro…

Commodore PET 2001-N Demo

Call of DOTY - Demo of the year 2014 Commodore 64 invitation