MEGA65/mega65-core

Ted Fried's MicroCore Labs Projects - FPGA CPU cores and emulators for the 8088, 8086, 8051, 6502, 68000, Z80, Risc-V, and also Typewriter and EPROM Emulator projects. MCL51, MCL64, MCL65, MCL65+, MCL68, MCL86, MCL86+, MCL86jr, MCLR5, MCLZ8, MCL6809, XTMax, MCL8080+

FPGA cores compatible with multiple arcade game machines and KiCAD schematics of arcade games. Working on MiSTer FPGA/Analogue Pocket

opensouce RISC-V cpu core implemented in Verilog from scratch in one night!

Open-source FPGA retro emulation handheld

The ao486 is an x86 compatible Verilog core implementing all features of a 486 SX.

Portable games console, designed from scratch: CPU, graphics, PCB, and the kitchen sink

Amiga Minimig ported to the Tang Nano 20k FPGA

Super Nintendo Entertainment System for Tang FPGA boards

A small, light weight, RISC CPU soft core