Yes, I dumped it electronically and then decapped it to compare.

TP1 and TP2 are test points at the bottom of the PCB. They are accessible with the battery compartment lid removed. I forgot to list TP1; it's connected to R0.

If you turn the game on with TP1 connected to TP2 and then press up, down or left/right, the display shows If you press Pass/Kick, it plays a tune.

I wound up with another unit that has an older PCB revision but a newer TMS1100. It's still labeled MP3415, but this one is a Rev E. Both units have the TMS1100 in sockets, which is unusual.