One of the computers I have setup on my new desk is the Yamaha CX5M MSX Computer. The only issue with that is the UK version of this machine only outputs a composite video signal and that is going to look terrible on an LCD monitor.
After looking around the internet for bit, I came across the TMS RGB V2 mod from videogameperfection.com. This device works on many different systems that use the TMS9928A and TMS9929A chips, such as the MSX.
The fitment of the device is pretty simple, you just place it over the pins of the TMS chip on the underside of the PCB, and then solder the holes that have the metal ring around them.
Once that was done I routed the wires to the back of the case where I made a small cutout and fitted a mini DIN connector to output the new RGB video signal.
I then made up a quick mini DIN to scart cable and re-assembled everything. After connecting it to my Open Source Scan Convertor (OSSC), I was greated by a beautiful sharp RGB image being output to my LCD Screen.
I think I am going to be much happier now, exploring the MSX software library with a nice sharp picture. All in all, a good afternoons work 🙂
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