# z88dk/z88dk

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

Repository: https://github.com/z88dk/z88dk
Canonical: https://ross.abutalabs.com/products/z88dk
Homepage: https://www.z88dk.org
Language: Assembly
License: NOASSERTION
License Family: other
Topics: z80, z180, z88dk, sdcc, c-compiler, assembler, linker, assembly-language, asm, embedded, c, zsdcc, z80asm, sccz80, libc, libm, zcc, rabbit2000, 8080, gbz80
Last push: 2026-09-02T22:23:45+00:00

## Health v2 (maintenance only)
Score: 71/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 18, longevity 100
- inputs: {"age_days": 3822, "days_push": 0, "days_rel": 335, "gap_med": null, "n_releases_24m": 1}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1134, forks 204 (observed 2026-09-03T02:15:20.822125+00:00)

## What it is
Z88DK is a complete cross-development kit for the Z80 family of processors (8080, Z80, Z180, ez80, Rabbit, GBZ80 and more), providing C compilers, an assembler, linker, and extensive assembler-written C libraries. It supports over one hundred target machines out of the box, producing runnable artifacts like tapes, disks, and ROMs with a single zcc command.

## Use cases
- write C programs for ZX Spectrum and other retro computers
- cross-compile C to z80 embedded targets
- assemble z80 assembly language projects
- build ROM images or .TAP files for emulators
- develop software for 8080 or Rabbit 2000/3000/4000/5000 CPUs
- mix C and assembly in one z80 project
- create games for classic z80 machines

## When to choose
- targeting any of the 100+ supported z80-family machines
- you want an optimized C standard library written in assembler for z80
- you need a one-command build producing emulator-ready artifacts
- you want to mix C and assembly freely

## When to avoid
- targeting modern CPUs like x86 or ARM
- you need a hosted POSIX C environment rather than embedded/retro targets
- you require a fully permissive open-source license (license is non-standard)

## Facets
- artifact type: cli-tool
- maturity: active
- function: compiler, programming-language, developer-tools, embedded
- domain: embedded-systems, developer-tools
- platform: windows, cli, cross-platform
- tags: z80, retro-computing, assembler, cross-compiler, toolchain, sccz80, sdcc, z80asm, classic-computers, command-line, linux, macos

## Member repositories
- z88dk/z88dk (main) score 71

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:20.822125+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:38:44.929186+00:00, confidence not recorded.
  - readme: https://github.com/z88dk/z88dk (fetched 2026-09-03T02:15:20.822125+00:00, sha 8f9b9a1f6532)
  - homepage: https://www.z88dk.org (fetched 2026-08-29T12:43:10.254508+00:00, sha 0620d075149a)
- Data as of 2026-08-30T08:39:29.467469+00:00.