Quoted from awarner:Actually, you could do this with WPC by adding a DMD controller BUT you would have to know how to program the WPC system. The hardware is capable, but the code wouldn't know how to address it. You could definitely do it with a P-ROC and a PC (http://www.pinballcontrollers.com/index.php/products/p-roc) but you would be starting over on everything or you could use an emulated version and try to mod that somehow.
Another Idea would be to do something like ColorDMD does and interpret what is going to the screen and substitute your own stuff. You would need some sort of processor to do the interpretation and generate a new screen.
I'm pretty sure you can just use FreeWPC to reprogram the ROM in the same way that was done with Demolition Man new code. It'll just need a bit bigger ROM chip and the jumper will have to be moved on the CPU board to support the larger ROM.
I just think it would be ideal if it were as obtainable as possible (Less new hardware, less expense). It may be a bit more difficult using FreeWPC than spending lots of money on P-ROC, but the benefit is that when it is finished it'll be cheap and easy for anyone to convert over.
I'm going to do some experimenting with this.
Oh BTW, "BOP owner here."