VGA (Video Graphics Array): Using the Commodore 128 Computer

Using the Commodore 128 Computer
with a VGA Monitor

It's now possible to use a Commodore 128 with a VGA monitor – without too much hassle or expense. Below is the configuration of my system, allowing for use of both 40-column and 80-column video modes at the flip of a switch:

RTV Veg Lite Composite-to-VGA converter (for 40-column mode).
Appx. cost: US $40-60
Highway CGA (RGBI)-to-VGA Converter (for 80-column mode).
Appx. cost: US $90-140

Basic wiring:

40-column video is routed to the RCA jack on the Composite-to-VGA converter.
VGA output from the Composite-to-VGA converter is routed to the VGA bypass connector on the RGBI-to-VGA converter.
The RGBI-to-VGA converter connects directly to the 9-pin D-Sub connector on the Commodore 128 for 80-column video.
The VGA monitor is connected to the VGA Output connector on the RGBI-to-VGA converter
There is a bypass switch on the back of the RGBI-to-VGA converter that, when used with a Composite-to-VGA converter, allows you to toggle between 40-column and 80-column modes. The switch is in an awkward location, though (in the back between the power and bypass cable connectors), so for convenience I've added a toggle switch to the front of my project box.

Below are some pictures of the final configuration.

Thanks to members of the Commodore 128 Alive! forum for information and suggestions instrumental in making this this possible. Special thanks goes to Mangelore for providing information necessary to overcome the lack of Intensity pin on the RGBI-to-VGA converter, thereby allowing all 16 distinct colors!

Commodore 128; 80-column mode – 16 colors on an LCD VGA monitor!