Bought a fancy Tigard JTAG adapter instead of the USB Blaster clone I’ve been using.
Need to figure out how to bump performance further, but even at default low speeds in urjtag, it seems like a good improvement.
When I converted this Mushi to Pink Sweets Suicide Club, I fucked up a bit and used bad blocks on U2, which is causing minor sprite glitches now. Going to see if I can fix it easily with JTAG so I don’t have to swap the IC again.