The V9958 VRAM config bit that Andy Hu mentioned doesn't exist. Since I was done tracing YM2413, I resumed working on V9958 and found that the register exists, but its output doesn't go anywhere. This is the same for V9938. That bit doesn't mean anything.https://t.co/4aZ3Frmbmq pic.twitter.com/dFgBhtl5hL

— イカビク (@RCAVictorCo) May 20, 2024