Tag: ribbon cable

2 matching upgrades

Showing 2 products.

StatusProductWhat it doesCompatibilityLinks
Build itChecked Jul 30, 2026Sven Petersen Commodore Port Breakout Boardsby Sven Petersen

Open five-board set for bringing Commodore cassette, user-port, and PET IEEE-488 connections to headers and ribbon cables.

The public repository provides revisioned PCB project files, pictures, and a GPLv3 license, but no current assembled seller is documented. Builders must fabricate the required board pair, fit connectors, and make the matching ribbon cable. The concise README does not document buffering, isolation, fusing, current limits, or a safe live-connection procedure; verify orientation and wiring and make every connection with the computer powered off.

Sources
  • Commodore 64 Exact model
  • Commodore 128 Exact model
  • Commodore VIC-20 Exact model
  • Commodore PET series Stated family
Sold outChecked Jul 30, 2026Ultimate64 User Port Adapter v2.0by 1541 Ultimate

Brings an Ultimate64 replacement board's internal user-port header to a C64-style edge connector with the power rails needed by compatible peripherals.

The 1541 Ultimate store listed version 2.0 for EUR 9.98 but out of stock on 2026-07-30. The flat cable is included. The official documentation warns that the connector has only one correct orientation: its red wire must align with pin 1, and a shifted or reversed connection can damage the board or accessory. The header's extra pins can drive either 9 VAC generation or an APA102C LED strip; the documentation says 9 VAC is enabled when LED-strip use is off. Do not assume this earlier Ultimate64 adapter is interchangeable with Commodore's separate C64U User Port Adapter.

Sources
  • Commodore 64 Exact model