A running-jumping-swordfighting game I made on the Apple II from 1985-89

An Operating System for Z80 computers, written in assembly

BIOS for Intel 8088 based computers

System Software for Z80/Z180/Z280 Computers

8-bit ATmega1284 retro computer

Hantek 6022BE Python API for Windows and Linux.

ISA 8-Bit Ethernet Controller

Z80 / 8080 / Z180 assembler (for unix-style OS)

Re-make of the Soviet Ham Radio computer published in Radio Magazine in 1986

A bootable 1 MB solid state disk for Apple ][ computers

GEOS 2.0 ported from C64/128 to 8-bit Atari

Multi-Floppy BIOS Extension

Code and documents related to the Intel 8080 processor and the Briel 8800 replica of the Altair 8800

Real Time Clock for your PC XT. Very low profile, simple and open hardware.

Galaksija is a Z80A based microcomputer designed in 1983 in Belgrade (Yugoslavia, now Serbia) by Voja Antonić. This repo includes roms, programs and tools for working with this computer.

Orion-PRO - Russian Amateur Personal Computer schematics and PCB