The bad news? You need to look elsewhere for how the card generates the vertical synchronisation signal - that can is just a colour timing reference thingy. You might find some manner of phase-locked-loop circuitry on the card to interpolate a higher frequency from the 14.318MHz - that could be a starting point.

Click to expand...

--------------------------------------- GAME OVER! ---------------------------------------

That's waaayyyyyyyyyyyyyyyyy outta my league! :disapprove:

A couple of possible leads:

Could it be done in the BT478KPJ50 - Digital Analog Converter, Triple, 8 Bit, 44 Pin, PLCC?

The Dallas DS1010-100 - Clock/Timing - Delay Lines IC sounds promising to this electronics noob.

Dunno, there are a few ICs that aren't Radius labeled ASICs, but not many . . . :-/

I'll post HI-Res pics of the board's surfaces for all of you electronics proficient type comrades to take a look at.

If somebody wants to tackle the project in hardware, I know where I can find another card and get it to you. :approve: