Retrocomputing is the preservation and use of historic and vintage
computer hardware and software. Software retrocomputing can be done
on real hardware or on an emulator.
Incompatible Timesharing System
An Operating System for Z80 computers, written in assembly
Fully documented and annotated source code for the cassette version of Elite on the BBC Micro
Fully documented and annotated source code for Elite on the Nintendo Entertainment System (NES)
Fully documented and annotated source code for Elite on the Commodore 64
Disassembly of the Apple II Desktop - ProDOS GUI
Proto Language AsSeMbler for All (formerly Apple)
A Z-machine interpreter for the Commodore 64 and similar computers
A Z80-based homebrew computer withTMS9918, AY-3-8910, Z80 CTC, Z80 PIO, and Z80 SIO
A patch for Commodore 64 and Plus/4 Elite that removes the flicker
Fully documented and annotated source code for Lander on the Acorn Archimedes
SE BASIC - A free BASIC interpreter written in Z80 assembly language
This is a reconstruction of the original 1981-82 IBM PC BIOS source code using scanning and transcription of the BIOS listings found in the IBM Technical Reference manuals.
Fully documented and annotated source code for Angus Duggan's Elite-A on the BBC Micro
Design files and source code for the Cody Computer.
GEOS 2.0 ported from C64/128 to 8-bit Atari