DKJR: It doesn't have any music. It's a pretty simple game, so it should fit in SM510 ROM size. It could also be the SM500 derivative that were in the first generation Game&Watch games(I still don't know the exact model of that)
I got the Toytronic football games running. Looking at the piezo circuit, was there anything special with the sound? Maybe some kind of volume gating effect?
