Stars
Verilog HDL clone of the Integrated Woz Machine (IWM) disk controller chip.
Schematics, PCBs, images, and notes for Nintendo's Famicom console
Apple II Stellation Two "The Mill" OS9 Daughterboard PCB and PROM source
A powerful floppy disk image manager with built-in bitstream analysis and Greaseweazle support. Also includes optional Kryoflux integration.
An implementation of the Apple IIe's MMU and IOU custom chips
A highly clock-accurate FPGA clone of the NES 2C02(7) PPU, created on the basis of reverse engineering.
A highly clock-accurate FPGA clone of the NES 2A03(7) APU (pAPU), created on the basis of reverse engineering.
Open Source Hardware for Vintage Computers
An endless runner for Sega Mega Drive / Sega Genesis.
VIC-20 Final Expansion 3 Rev 11 Cartridge
A multiple diagnostic cartridge for the Commodore C64 and/or C128
Commodore 64 shortboard and C128 RF modulator replacement version 2
Commodore 64 longboard RF modulator replacement version 2
An Amiga 1000-500-2000-3000 DF0: - External Floppy Drive Swapper
Adapter that allows computers that use the TMS9118 or TMS9918 VDP to use a TMS9128 or TMS9928 and TMS-RGB for RGB output.
Commodore 64 Internal RAM Expansion with integrated MMU
An 8 4164 to 2 4464 conversion PCB for various Commodore 64 motherboards
An implementation of the 68HC705E1 Programmer, to replace EGRET and CUDA ICs in 90s Macintoshes
Emulating PSX Memory Card (or controller) using a Raspberry Pi Pico