Commodore 64 upgrades

Adds CompactFlash and ATA or ATAPI mass storage plus USB PCLink transfers to a Commodore 64 expansion port.

For this system (exact model): IDE64 plugs into the Commodore 64 expansion port. The official project also names the C128. A CompactFlash-only setup needs no additional power supply; other device configurations and firmware upgrades require the applicable IDE64 documentation.

The official project site is active and identifies V4.2 as the latest revision, but the selected official pages provide neither a current order path nor a complete fabrication package. Check the used market and confirm the hardware revision before buying.

Emulates Commodore IEC devices and loads files from local flash, an SD card, or network servers over Wi-Fi.

For this system (exact model): The project explicitly supports the Commodore 64 through its IEC serial port. Its repository also names the C128, VIC-20, and Plus/4, which can be added when those targets enter the catalog.

The project provides source, several ESP32 hardware profiles, build instructions, and a browser-based firmware flasher. No direct retail source was verified, so builders must select matching hardware and firmware before connecting it to a computer.

Replaces a Commodore 64 motherboard with an FPGA-based board offering modern video, storage, networking, and emulated peripheral functions.

For this system (exact model): This replaces the C64 motherboard and requires a compatible case and C64 keyboard. The official setup guide also calls for C64 ROM images; original SID chips are optional.

The official store listed both Ultimate-64-Elite and Ultimate64 Elite-II mainboards as out of stock on 2026-07-15. Check the direct store page for a restock.

Adds USB-backed disk-image storage, drive emulation, networking, and other emulated peripherals to a Commodore 64.

For this system (exact model): The official quick guide identifies the Ultimate-II+ as a cartridge and storage solution for the Commodore 64. Network functions are provided by its own firmware rather than RR-Net compatibility.

The official store showed several Ultimate-II+L color variants in stock on 2026-07-15, with some colors on back order.