msx diagnosticsTool written in Z80 assembler to test the MSX hardware basics.
zx-specA unit testing framework for Sinclair ZX Spectrum assembly
sebasic4SE Basic IV 4.2 Cordelia - A free BASIC interpreter written in Z80 assembly language
rygar-emuAn emulator for the Rygar arcade game
Z80Highly portable Zilog Z80 CPU emulator written in ANSI C
rc2014-ym2149KiCad schematics and gerbers for a YM sound card for the RC2014. See it in action here: https://www.youtube.com/watch?v=-iLwi9FagFE
z80eA z80 calculator emulator (and debugger)
zasmZ80 / 8080 / Z180 assembler (for unix-style OS)
pac-man-emulator🕹 An emulator for the Pac-Man arcade machine (Zilog Z80 CPU) for Win/Mac/*nix and Xbox One.
zx-spectrum-gamesCollection of ZX Spectrum annotated game source code dissasemblies as .skool files
gorilla-cpmGORILLA.BAS port to CP/M in Turbo Modula-2. Supported terminals: VT52, VT100, ANSI, ADM-31, KayPro, C128, Memotech monochrome, CPC / Zenith Z19
ZSM4Z80/Z180/Z280 Macro Assembler for CP/M, UZI180 and RSX180
mesccMike's Enhanced Small C Compiler for Z80 and CP/M.
iz-cpmPortable CP/M emulation to run CP/M 2.2 binaries for Z80
emuStudioUniversal emulation platform and framework.
Zany80Zany80 fantasy computer system
a80Intel 8080/Zilog Z80 assembler written in D.
z80Single header Z80 emulator for C++ (C++11 or later)
6502.NetA .Net-based Cross-Assembler for Several 8-Bit Microprocessors
asMSXAsMSX, originally developed by Pitpan. More info: https://www.msx.org/wiki/AsMSX.
spectrum128 cpmzx spectrum 128 emulation on stm32f407 + Grant Searle's CP/M system port ili9341 16 bit display
z80countA tool to annotate Z80 assembler with cycle counts
kernal64A Scala Commodore 64, 128, VIC20, CBM2 and SuperCPU emulator
MDSDRVSound driver for Sega Mega Drive
apultraFree open-source compressor for apLib with 5-7% better ratios
scasSirCmpwn's assembler (and linker)
channelsZX Spectrum browser for forums and imageboards
jsGBC👾 A GameBoy Color Emulator written in JavaScript
ArduZ80The first Z80 emulation library for Arduino
HiSoft-CDisassembled code of HiSoft C compiler for ZX Spectrum
ostrichA Game Boy Sound System player for macOS, written in Swift
MSXPiInterface for MSX to Connect and use Raspberry Pi resources
awesome-listAwesome Lists of retrocomputing resources (6502, Apple 2, Atari, ...)
libasmC++ library of assembler / disassembler that can run on embedded system
jetpac-disassemblyJETPAC: annotated source code disassembly of this classic 8-bit game (1983, ZX Spectrum)