Tag: passive adapter

6 matching upgrades

Showing 6 products.

StatusProductWhat it doesCompatibilityLinks
Build itChecked Jul 30, 2026C128 Simple VGA Adapterby Steve J. Gray
rgbianalog rgb15khzvga connectorvideo adapter80 columncomposite videopassive adapterdiy

A passive buildable adapter that converts C128 80-column RGBI to 15 kHz analog RGB and adds monochrome composite output.

The repository publishes KiCad schematic and board files plus Gerbers. This is not a scan doubler or scaler, so the connected display must accept 15 kHz analog RGB with separate 5 V horizontal and vertical sync. The design has no CGA brown fix, does not provide VGA identification or communication signals, and will not work with a downstream converter that requires composite sync. The maker reports a successful Dell 27-inch monitor test but calls the test computer a 'C128cr'; do not infer separate C128D or C128DCR testing from that ambiguous label.

Sources
  • Commodore 128 Exact model
C128 Simple VGA Adapter projectC128VGA design files
AvailableChecked Jul 30, 2026C64-to-C128 PSU Adapter Optionsby CMD Marketplace, Electroware, Keelog, and Commodore4ever
c128power adapterdin adapterpassive adapter

Passive adapter-cable options for powering a Commodore 128 from a suitable modern C64 power supply.

On 2026-07-30, CMD Marketplace listed its 15 cm adapter at USD 19 with five units remaining, Electroware listed its 16 cm adapter at EUR 15.99 with dispatch in three to five days, and Keelog listed its 22 cm adapter at USD 23.99 or EUR 20.99. Commodore4ever listed its 90-degree option at USD 14.99, but the page did not expose unambiguous variant stock. CMD Marketplace requires a new switching C64 supply capable of at least 3 A and explicitly warns against using an old original C64 supply. Treat that as a minimum for its adapter and confirm the requirements of any other adapter and supply combination before use.

Sources
  • Commodore 128 Exact model
CMD Marketplace C64-to-C128 adapterElectroware C64-to-C128 adapterKeelog C64-to-C128 adapterCommodore4ever 90-degree adapter
AvailableChecked Jul 30, 2026Commodore4ever A/V Breakout Familyby Commodore4ever
av breakoutcomposite videos videomono audiostereo audioexternal adapterpassive adapter

Host-specific passive A/V adapters for the VIC-20, C128 family, Plus/4, and Ultimate64 replacement mainboards.

Commodore4ever exposed active Add to cart controls for all four variants on 2026-07-30. The Ultimate64 board uses a different A/V pinout from an original C64; do not use that adapter on a stock C64 or assume compatibility with the newer Commodore 64 Ultimate. The C128 variant handles the 40-column analog output, not the separate 80-column RGBI port.

Sources
  • Commodore 64 Exact model
  • Commodore 128 Exact model
  • Commodore Plus/4 Exact model
  • Commodore VIC-20 Exact model
Commodore4ever A/V Breakout collectionUltimate64 and Elite A/V BreakoutC128 family A/V BreakoutPlus/4 A/V BreakoutVIC-20 A/V Breakout
AvailableChecked Jul 30, 2026Keelog C128-to-C64 PSU Adapterby Keelog
c64power adapterdin adapterpassive adapter

Passive cable for powering a Commodore 64 from an external Commodore 128 power supply.

Keelog listed the 22 cm adapter at USD 23.99 or EUR 20.99 on 2026-07-30. The product is manufactured in Poland and was presented through a live order form. The seller warns that the passive adapter only conveys power and does not guarantee that an attached supply can provide sufficient current.

Sources
  • Commodore 64 Exact model
Keelog C128-to-C64 adapter product page
AvailableChecked Jul 30, 2026SCART A/V Breakout Adapter Familyby Lotharek and other makers
scartvideo breakouts videocomposite videostereo audiopassive adapter

Current passive adapters that expose S-Video, composite video, and stereo audio connections from a SCART path.

Lotharek exposed a login-or-register-to-buy path on 2026-07-27, and AMI64 exposed an Add to Cart path on 2026-07-30. The AMI64 adapter has an input/output switch but permits S-Video only in the input direction. Neither passive adapter converts signal formats or scan rates. Verify direction, wiring, connector gender, and signal support against both connected devices before use.

Sources
  • Retro video interfaces Bus/interface
Buy the HQ SCART breakoutBuy the AMI64 SCART A/V adapter
AvailableChecked Jul 27, 2026Sony PVM SCART-to-BNC Adapterby Lotharek
scartrgbpassive adapter

Adapts a SCART video connection to the BNC inputs used by Sony PVM, BVM, and similar professional monitors.

The page exposed a login-or-register-to-buy path on 2026-07-27. The seller describes a connector adapter and included BNC cables, not a scaler or format converter. Confirm the SCART cable direction, signal levels, sync wiring, source timing, and the exact monitor inputs before use.

Sources
  • Retro video interfaces Bus/interface
Buy the Sony PVM SCART adapter