PDF link doesn't work here, but I can see the pinout here: http://www.cpu-world.com/info/Pinouts/S2000.html

No K-pins at all huh... yet Wildfire does use a K-pin related opcode. And it is used during the time when you'd expect sound(big hint!). Maybe that is for loading the digital-to-frequency converter, and the Fout pin is the freq.

wildfire.xcf: Too bad about the smudge. Can you see something looking like a mask programmable 7seg decoder?
*edit* could you upload it as .jpg? MS Windows isn't very xcf friendly.

Last edited by hap; 02/16/15 10:39 AM.