I have finally got my old Williams Contact in a very good shape after I bought it 6 month ago!
However, I have the feeling that the sound theme, i.e. the sound I get when I play the game is wrong!?
The sound I get from my game is here:
The "right" sound is this one as I understand it:
The sound card I'm using is Type 1 Rev 2 and the Rom is Sound1
I have tested Soundboard separately in diagnostic mode and it works and if I "Ground" Pin 2,3,4,5 (Sound 10, 100, 1000, 10000) I get a sound out but no sound on pin 8 when that is grounded "Sound Alternator".
Any idea why my game sound as it sound?
Thanks it advance for any help or hints how to debug this issue.