A latency-hating emulator of: the Acorn Electron and Archimedes, 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, early PC compatibles, Sega Master System, Sinclair ZX80/81 and ZX Spectrum.

ZEsarUX - ZX Second-Emulator And Released for UniX

A .Net-based Cross-Assembler for Several 8-Bit Microprocessors

A tribute repository for the Sinclair ZX81 homecomputer. Or... how I build my own zeddy.

Sinclair ZX81 schematics (kicad)

Arduboy clone of the ZX Spectrum classic Jet Pac

Tiny MCUME esp81 ttgo vga32

This is the original 1982 BASIC Source code for the classic text-only Football Manager game by Kevin Toms.

Gomoku

This project is a collection of hardware projects for Sinclair ZX Systems (ZX81, Spectrum)

Programs for ZX81. Mostly in BASIC.

40 Years after the Sinclair ZX81 was released this project aims to preserve the first 4 chip computer

Organize and manage your emulator files for ZX Spectrum, ZX81, ZX80 & Lambda 8300 - powered by the web

This is a Z80 Emulator applied to a ZX80 rom

Make a chargen file (character generator ROM) from an 8x8 text file with 512 characters

Functions for semigraphics similar to ABC80 (setdot, clrdot, dot), TRS-80, TeleText, Text-TV, & Viewdata using 3x2 blocks, and ZX81 (plot, unplot) using 2x2 blocks.

fig-Forth for modern and retro platforms.

16K ZX81 fast action game.

External MultiROM Interface based on EEPROM W27C512 for ZX81

ZX81 ROM Annotations