Original Apollo 11 Guidance Computer (AGC) source code for the command and lunar modules.

The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes

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

An Operating System for Z80 computers, written in assembly

A wifi webradio with only low cost boards ESP8266 and VS1053 by Jp Cocatrix

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

Transplanted from Semtech LoRaWAN(https://github.com/Lora-net/LoRaMac-node) protocol to "ESP32 + Arduino" platform. Use RTC, support deep sleep, only working with ESP32 + LoRa boards made by HelTec…

Visual Studio Code Debugger for Z80/ZX Spectrum.

Modern Computer Architecture and Organization, published by Packt

A Z80-based homebrew computer withTMS9918, AY-3-8910, Z80 CTC, Z80 PIO, and Z80 SIO

Z80 / 8080 / Z180 / Z80next assembler (for unix-style OS)

"Anyone who has brought up CP/M on a homebuilt computer has felt this moment of elation. A myriad of connections are properly closed; bits are flying at lightning speeds over busses and through cir…

Z80 8085 MS BASIC Version 4.7 - (C) 1978 Microsoft

Bare metal SDCC library for Z80.

Z180 computer with extended interfaces.

FabISP - Fab-able in-system programmer with WinUSB support

EPROM Reader

Fixed MS-DOS 4 source tree from Microsoft Open Source