z80

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All CPU and MCU documentation in one place

OS for z80 calculators

Gameboy emulator in Java 8.

A latency-hating emulator of 8- and 16-bit platforms: the Acorn Electron, Amstrad CPC, Apple II/II+/IIe and early Macintosh, Atari 2600 and ST, ColecoVision, Enterprise 64/128, Commodore Vic-20 and Amiga, MSX 1/2, Oric 1/Atmos, Sega Master System, Sinclair ZX80/81 and ZX Spectrum.

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

Disassembly of Legend of Zelda: Links Awakening DX

An Operating System for Z80 computers, written in assembly

RunCPM is a multi-platform, portable, Z80 CP/M 2.2 emulator.

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

Ted Fried's MicroCore Labs Projects which include microsequencer-based FPGA cores and emulators for the 8088, 8086, 8051, 6502, 68000, Z80, Risc-V, and also Typewriter and EPROM Emulator projects. MCL51, MCL64, MCL65, MCL65+, MCL68, MCL86, MCL86+, MCL86jr, MCLR5, MCLZ8

Kernel for z80 calculators

Highly portable Zilog Z80 CPU emulator written in ANSI C

System Software for Z80/Z180/Z280 Computers

Open source development for Neo-Geo

Millfork: a middle-level programming language targeting 6502- and Z80-based microcomputers and home consoles

An assembler and operating system for the TI-84+ written in Scheme, Forth and Z80 assembly.

Byte-aligned, efficient lossless packer that is optimized for fast decompression on 8-bit micros

Sega Master System / Game Gear / SG-1000 emulator for iOS, macOS, Raspberry Pi, Windows, Linux, BSD and RetroArch.

Emulations (running on Linux/Unix/Windows/macOS, utilizing SDL2) of some - mainly - 8 bit machines, including the Commodore LCD, Commodore 65, and the MEGA65 as well.