ZX Spectrum CPLD-based clone for rubber case

Custom chips reverse-engineered from silicon

Collection of various development boards for microcontrollers (e.g., CH55x, CH32, PY32, STC8, STM32) and accompanying example software.

A collection of scripts and tools for Atmel ATF150x and GAL Programmable logic devices, some of the only standing active 5V programmable logic parts still available.

Mod kit for the Virtual Boy to make it output VGA or RGB video

Improved design attempt for Amiga 500 in socket 68000 Accelerator, FastRAM and IDE Interface

24-bit Stereo Audio DAC for Raspberry Pi

68000 Relocator with FLASH Kickstart

Replacement "chips" for NeoGeo systems

Complex Programmable Logic Device (CPLD) Guide

Dockerized FPGA toolchain experiments

Amiga 600 Accelerator And RAM Expansion

Karabas-128. ZX Spectrum 128k clone, based on CPLD Altera EPM7128STC100

An Arduino as an XSVF player to program CPLD's and FPGA's

Many peripherals in Verilog ready to use

Design files for the open-hardware NeoGeo MVS to AES converter

ZX Spectrum 48 modern cpld based clone.

ZX Spectrum soundcard for NEMOBUS/ZXBUS

Easy-to-build minimalistic ZX Spectrum clone

Cheap & simple evaluation boards for Microchip ATF15xx CPLDs