TMS-RGB - A module to convert systems using TMS9928A and TMS9929A (e.g. TI99/4A) to RGB out

I made some of these modules for myself to convert the video output of Ti99/4a machines to RGB which vastly improved the video quality over the standard UHF modulator output that they came with.

This module will convert computers that use the TMS9928A (NTSC) and TMS9929A (PAL) video graphics processing chip. This includes a range of vintage computers such as MSX computers, Memotech MTX Series,  Colecovision Console, Texas Ti99/4a, Sega SG-1000 console and SC-3000 computer.

Fitting this circuit board require some soldering skills, you will need to solder it on the reverse side of the PCB under your video chip and you can either wire the RGB output to your own cable or re-use the existing video DIN socket. More information on the boards use and how install can be found on the website ( see tms-rgb.com)

The photos show the installation on my TI computer and the resulting video output compared to standard.

Shipped in an anti-static bag