I have an Austin Powers I can get booting and had read that a D from my Vipe Night Driving should be interchangable.
Tried swapping and swapping all roms. Austin Powers boots and plays but some of the sounds are all screeky. What am I missing? Do I need to change jumpers or anything?
Did notice viper had 4mb and Austin had 8mb sound roms...that causing this issue?

What else would cause the chipmunk voices?

Problem is when installed in viper the sounds are find. Even burnt new sound/voice roms for ap and both the original and replacement ones have same chipmunk issue

It’s not. It’s a sega d and a stern e but from what I have seen they are interchangeable

Had read they are interchangeable but no longer an issue. Fixed AP board and both now working proper...future reference I don’t think they are a straight swap