This is one example of a cheep PC module.

http://www.aaeon.com/PD_Products_Detail_DCCAA0A1DF3344B7BB_3FE0053B953B46CC88_A199E1D9B0AD4DC19B_TW_UTF-8.html#

Correct me if I'm wrong Gerry, but the stock Williams CPU can do around 30 instructions or cycles per second and the P-ROC can do 400 cps not to mention more frames per sec on the DMD as well.

Imagine a P-ROC driven CFTBL with a mini LCD hooked under the playfield with the creature swimming around when required via the game software. Just one of the possible applications P-ROC could deliver...