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C128 RGBi to RGBa adapter

C128 RGBi to RGBa adapter

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25,00 EUR

incl. 19% sales tax

Shipping time: 3-6 weeks

Stock: 7 units


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Stock: 7 units!


The C128 produces digital RGBIHV output (RGBi), however some devices require analog RGB (RGBa) signals (without a separate intensity signal), and composite H+V sync.

This adapter converts the digital RGB output into its analog counterpart. With this it is now possible to connect the C128 directly to a video-game-to-VGA upscaler board such as the GBS-8200 or 8220 (also sometimes referred to as JAMMA boards).

At one end is the C128 video port connection. At the other end is a row of five holes to receive the wires from the scaler board's video-input pigtail, and two more holes next to them for power input. If you are using this adapter with a GBS-8200/8220, you can use its barrel connector to power it at 7.5 to 12VDC, and then use its two-wire power pigtail to send power from there to the RGBI-to-RGBA adapter.

The "Invert-Sync" jumper, located half-way back at one edge, is provided here to address an oddity with how the C128 interacts with the GBS-8200. If you need to use the GBS's "auto scan" button, you may first have to move the jumper to the "Invert" position, then press "auto", wait for the GBS to finish syncing, then move it back to the "Normal" setting. When the GBS finishes, you'll see a stable, but potentially jittery screen. Move the jumper back to remove the jitter.
 

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This Product was added to our catalogue on 2022-03-25.

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