Sharpsville, PA
Hey, I saw your post right after you posted it, but I had no idea what to think of it.
I've never had a sound board problem with a game except for one "Sound Board Interface Error" that was resolved in about a minute by reseating the ribbon cables.
Your best resource may be PinWiki:
4.21.4.7 Wrong sounds being played
Generally, this problem boils down to a communication problem between the MPU and the sound board. Possible failure points are:
- Ribbon cables
- Male header pins on both MPU and sound board
- 74LS374 data buffer ICs on the sound board used to communicate between the MPU and the sound board.
- Rarely, a failed 6264 RAM can cause this. The RAM is "tested" by the MPU. Sometimes it will pass the test, yet fail in game play. Odd...I know.
