Jul 292017
 

I’ve been working on trying to fix an original Tehkan World Cup PCB for quite some time, but not making much headway.

What has been really interesting about this repair is that I have discovered that the majority of the roms on the main CPU board were not known in Mame. Sometimes this is just a case of the rom data being corrupt, but I have managed to run the game data in Mame, and it looked fine, so that ruled that possibility out. What I noticed is that it was different to the version I had previously seen. I compared the two side by side so you can see the differences yourself. You’ll notice that the logo looks different and there is no world cup image in my version:

YouTube Comparison

With the help of another collector I submitted the rom data to the Mame team and it turns out that this is an early version of the game and even has a different way of handling the dip switches.

The information that was added to Mame can be seen at the page below:

Mame Tehkan World Cup Info

I also submitted some pictures of the CPU and video board to the Mame team so they were aware of any markings on the board which might provide some more information:

Tehkan WC CPU Board

Tehkan WC Video Board