Search Results for "z80"
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Showing 102 open source projects for "z80"
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Z80-μLM
Z80-μLM is a 2-bit quantized language model
Z80-μLM is a retro-computing AI project that demonstrates a tiny language model (Z80-μLM) engineered to run on an 8-bit Z80 CPU by aggressively quantizing weights down to 2-bit precision. The repository provides a complete workflow where you train or fine-tune conversational models in Python, then export them into a format that can be executed on classic Z80 systems. -
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Z80 Preprocessor
Preprocessor for PseudoSam assembler or ASZ80 (SDCC)
An old project that adds local labels to PseudoSam assembler, and undocumented instructions support to SDCC (asz80) and PseudoSam assemblers -
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Zilog Z80
Z80 shared library including some nice test-projects
Another Zilog Z80 emulation. C++ class on a shared library. Simulates all pins of the Z80-Chip in a single function interface. Additionally are some Test-Projects added. 1. CP/M 2.2 emulator connectable by an telnet client. 2. An instruction set examiner. 3. An ZX-80 emulator. 4. An TK-80 emulator 5. An Z80 Dis-assembler driver for all supported instructions. -
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str_z80
A structured macro preprocessor written in C for SDCC Z80 assembler
This program process a source code file with structured macros and generates the assembler code for implementing the macro. Then, the generated file can be processed by your favorite assembler. This version uses the SDCC Z80 assembler -
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Z88 Development Kit
C compiler and dev kit for the z80 with assembly language libraries.
Z88DK is a complete Z80 / Z180 development kit that includes C compiler, assembler, linker, a tool for generating executables in a number of formats, and miscellaneous other tools. Over 80 machines are directly supported out of the box including standalone Z80 and Z180 embedded systems. Z88DK's extensive assembly language libraries give it significant performance advantages over other Z80 C Compilers. -
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Coffee GB
Gameboy emulator in Java 8
Coffee GB is a Gameboy Color emulator written in Java 8. It's meant to be a development exercise. More info can be found in the blog post. First I implemented all the Gameboy CPU opcodes. It’s not exactly the Z80, but it’s pretty close. As a reference, I’ve used the GameBoy CPU Manual - later on I discovered that it has a few typos and is not specific enough for some of the operations. After implementing the opcodes and memory (modelled by an int[] array) I was eager to check whether it’s possible to run some code on it. I had neither the cartridge nor the GPU emulation yet, so even the simplest game wouldn’t be an option. ... -
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struct_pgm_z80
Use structured programming with Z80 assembler
Use higher level constructs in assembler program (Do while, While, if then else, switch) You can easily add other constructs as well. Works with the SDCC assembler for the Z80 This project is now ported to C. See str_z80 project. -
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Sharp MZ-800 Emulator
Emulator of the 8-bit computers Sharp MZ-800 / MZ-700 / MZ-1500
Open-source emulator of 8-bit personal computers Sharp MZ-800, MZ-700 and MZ-1500. Developed for Linux and Windows using SDL3 (video/audio) and ImGui (GUI). Accurately emulates core hardware: CPU Z80, GDG (WHID 65040-032), CTC i8253, PIO Z80, PIO 8255, PSG SN76489AN - with precise internal signal timing. Supports peripherals: CMT (MZF/MZT/TAP/WAV), FDC WD279x, Quick Disk, ramdisks (MR1R18, Pezik variants), memory extensions, Unicard and IDE8. Integrated Z80 debugger with inline assembler, memory browser and breakpoints. ... -
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Monsputer project
Documentation for the Z80 monsputer
The Monsputer is a Z80 computer developped with old chips (and some new) collected over the years. It has about 2M memory, clocks at 4.0MHz, has serial ports, 1 parallel port, 1 CAN bus, 2 SPI, 1 I2C, a RTC and other features. It supports interrupts mode 2 but not DMA. -
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Small Device C Compiler (SDCC)
The Small Device C Compiler (SDCC), targeting 8-bit architectures
SDCC is a retargettable, optimizing standard C (ANSI C89 / ISO C90, ISO C99, ISO C11 / C17, ISO C23) compiler that targets a growing list of architectures: STM8, MCS-51, DS390, HC08, S08, Z80, Z180, R800, Rabbit, SM83, eZ80 in Z80 mode, Z80N, TLCS-90, Padauk PDK14 and PDK15 microprocessors. There also is incomplete support for the Microchip PIC16 and PIC18 and the Padauk PDK13 and MOS 6502. -
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Mastermind RK
The classic board game "Mastermind" for various Z80 computers
Mastermind RK is a little cross-platform game for various classic Z80-based computers, written in C using the z88dk compiler (www.z88dk.org). Your goal is to break a four-digit colour code in as few moves as possible. The compiled program is a little over 8K in size, so it usually requires the target machine to have at least 16K RAM. Currently, 83 target systems are supported, including Mattel Aquarius, Sinclair ZX80 and ZX81 (with a separate Chroma colour version), ColecoVision, various Robotron computers, Philips P2000 and VG5000, and many more. 2025-11-10: - New target supported: Commodore 128 (using the Z80 CPU) -
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ZAPH
Tools and Z80 engine for creating adventure games. (RUST)
This is an exercise in some advance programming topics using a text adventure as the central result. This originally began as a project to recreate an old BASIC text adventure, on the ZX Spectrum, using Z80. After developing a very simple byte code VM to handle the game interactions, I realised that there was an opportunity to use some more advance techniques, which in turn can lead to some PC based tools. -
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cpm-ulibc
Minimalistic C library for CP/M
The aim of this project is to develop minimalistic C library for CP/M using plain C and Z80 assembly language. It should compile with LLVM's Clang patched for Z80 architecture support and GNU `as` from `binutils` package built with `--target=z80-none-elf` flag passed to its `configure` script. -
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Elite Planet Browser
Browse through the planets of the Elite game on various Z80 machines
First of all: this program is totally useless. But those of you who know and love the classic computer game "Elite" will maybe like it. The "Elite Planet Browser" is a little program for various classic Z80-based computers, written in C using the z88dk compiler (www.z88dk.org). It allows you to browse through the planet data of the Elite game on many old Z80-based computers. When the original game came out in 1984, many people wondered how it is possible to have detailed data of so many planets in the 16K RAM memory of the BBC Micro. ... -
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Memu
8080/6800/6502/Z80/8086 emulator, arcade emulator, CP/M emulator
Memu is a multiple machine emulator. Some CPUs are emulated: 8080, 6800, Z80, 8086. Some arcade machines which based on 8080 CPU are emulated. CP/M 1.3, 1.4, 2.0 runnable. Altair BASIC 3.0 runnable. PC emulation is under construction. -
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sdcc-z80n-mingw64-binaries
A z80n-targeted repack of SDCC Win64 snapshot
This is a z80n-targeted repackaged snapshot of a Win64 build of SDCC - free open source, retargettable, optimizing ISO C compiler ( https://sdcc.sourceforge.net/ ) "Free open source, retargettable, optimizing ISO C compiler suite that targets a growing list of processors including the Intel MCS-51 based (8031, 8032, 8051, 8052, etc.), Maxim (formerly Dallas) DS80C390 variants, Freescale (formerly Motorola) HC08 based (hc08, s08), Zilog Z80 based MCUs (Z80, Z80N, Z180, SM83 (e.g. Game Boy), Rabbit 2000, Rabbit 2000A/3000, Rabbit 3000A, TLCS-90, R800), STMicroelectronics STM8, Padauk PDK14 and PDK15 and MOS 6502." This repack is suitable only for the compilation for z80n target. The exact build number can be seen by typing sdcc --version It also includes the sources from the 'device' directory from the SDCC's sources snapshot with the same build number and a Win64 build of ihx2bin by Jari Komppa (github.com/jarikomppa) -
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H-Tron
The classic "Tron" game for various Z80 computers
H-Tron is a portable little game for various classic Z80-based computers, written in C using the z88dk compiler (www.z88dk.org). This is the classic overhead view "Tron" game from the movie of the same title (motorcycles that leave "wall trails" behind them). If you crash into a wall, your opponent scores a point. The player who first reaches a score of 5 wins. The compiled program is a little over 8K in size, so it usually requires the target machine to have at least 16K RAM. ... -
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Cambridge Z88
Software development for 4Mb portable, using Z80 CPU and AA batteries
This project is for the portable computer "Cambridge Z88", produced by Sir Clive Sinclair (of ZX Spectrum fame). We continue to support software development (ROM, 3rd party apps on memory cards and desktop applications). We have moved to https://cambridgez88.jira.com/wiki (development, source code and documentation). However, we continue to publish files for download here. -
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Fuse for macOS is a macOS port of The Free Unix Spectrum Emulator (Fuse) (an emulator of the 1980s home computer and various clones).
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Unreal Speccy portable
Portable ZX-Spectrum emulator based on UnrealSpeccy 0.37.3 by SMT
Portable ZX-Spectrum emulator supports Z80 128K (Pentagon) AY/YM, Beeper, Beta Disk, Tape, Kempston Joystick/Mouse, Snapshots, Replays. Supported formats: sna, z80, szx, rzx, tap, tzx, csw, trd, scl, fdi, zip. Created to be ported to many platforms such as Windows/Linux/Mac/Symbian/Dingoo A320/Android/iOS/PSP/Raspberry Pi, ... -
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ZxSim
API (C#) for simulating certain aspects of a ZX spectrum for porting.
Initially this project is a showcase of my abilities to write code using C# and DotNet libraries, along with Design Patterns and SOLID techniques. The project itself is a bunch of libraries that make porting Spectrum games easier using C#. Originally I would use a popular UI and write code emulating the Z80. However over time those UIs would come out of favour or not compile on a modern OS, so the first aim is portability. The current examples will use Godot to display and control the game. Next is re-usability, broken up into separate scopes there is a natural layer of usage. Along with all this is some code to handle the original games data and to emulate some of the routines found in the original Z80, such as sprite blitting and room drawing. ... -
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Decompiler
Binary executable decompiler
Reko decompiler reads program binaries, decompiles them, infers data types, and emits structured C source code. Designed with a pluggable architecture, it currently has: - support for 68k, ARM, MIPS, PowerPC, Risc-V, Sparc, x86, Z80 processors and many more - support for EXE, Elf, AmigaOS Hunk executable formats and many more - support for MS-DOS, Win32, U*ix, AmigaOS , C64, ZX-81 Reko decompiler comes with a GUI and a command-line interface. Visit https://github.com/uxmal/reko for the GIT repository. -
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FranMsxApps
My MSX programs and some additional .cas tools
I wanted to share the programs I developed with my MSX computer in the 80s and early 90s. There is a web page that you can visit: https://www.frojasg1.com:8443/downloads_web/web/html/aplisMSX.html?origin=sourceforge Some of the programs are cool. The most relevant are: - A graphic designer in Assembler Z-80 - A ship game in Assembler Z-80 - A text to speech in Spanish. - The seed of a maze game. - My version of Tetris in Assembler Z-80 There are some demo videos, and even... -
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Deepspace
A simple action game for various Z80 computers
This is a remake of a type-in game that I played in the 1980s on a friend's Atari 800XL. Your spaceship is trapped inside a force field. Try to reach the fuel station before you run out of fuel, but avoid the deadly rocks. Currently, 56 target systems are supported, including the Sinclair ZX Spectrum, MSX, Sega Master System, and many more. 2026-01-20: - New target supported: Sharp PC-G850 and PC-G850V - Triumph-Adler Alphatronic P2: Graphics speed has been improved in z88dk, the... -
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Amstrad CPC-Emulator in JAVA, based on JEMU by R. Wilson. I am searching for good JAVA-coders who are also knowledgable in emulating 8bit homecomputers.
