Low cost microcontroller + FPGA board for makers , hobbyist and student for endless possibility.

A simple test pattern generator running on the RP2040 microcontroller

PinMAME - Pinball Multiple Arcade Machine Emulator

Easy offline install for Mister FPGA

Chisel: A Modern Hardware Design Language

Open-source FPGA retro emulation handheld

My DIY TTL home computer with VGA and PS/2 and 4x the processing power of a Commodore C64 or Apple II.

Mega Drive/Genesis core written in Verilog

A digital logic designer and circuit simulator.

MAME history from 0.1 to 0.122, thanks to @fesh0r

MAME

Visual Pinball

Raspberry Pi PICO board + Lattice iCE40 FPGA's

An 8-Bit Open Source Games Console and Microcomputer

FPGA based microcomputer sandbox for software and RTL experimentation

A BSD-licensed YM2151 cycle-accurate Verilog core based on the die shot from siliconpr0n

A fork of the official X16 emulator, converted to C++20 and with a bunch of features tweaked and added.

Verilog sources for simple 6502 computer.

KiCad Symbol Library for a variety of MOS, CBM and WDC retro microchips, including the eponymous MOS Technology 6502.

Cycle-accurate Yamaha YM3438(YM2612) emulator

A port of the OPL3 to the Panologic G1 thin client

Reverse engineered SystemVerilog RTL version of the Yamaha OPL3 (YMF262) FM Synthesizer

Commodore 64 VIC-II 6567/6569 Replacement Project

6502 enhanced BASIC unmodified source

Tests for all valid opcodes of the 6502 and 65C02 processor

A complete 65C02 computer with VGA output on a Lattice Ultra Plus FPGA

Examples for iCE40 UltraPlus FPGA: BRAM, SPRAM, SPI, flash, DSP and a working RISC-V implementation

UPduino 3.0: new 4 layer layout, various other improvements

A Verilog HDL model of the MOS 6502 CPU

YM2151 clone in verilog. FPGA proven.