2 layers20.5 × 37.7 mm

82S1xx W27C512 Adapter
SukkoPera/OldPromAdapter
Replace 82s126/82s129/82s131 PROMs with (E)EPROMs
5 parts18
KiCad boards from 3 GitHub repositories tagged “arcade-machine”, the most starred first; open any of them in PCBKit.

SukkoPera/OldPromAdapter
Replace 82s126/82s129/82s131 PROMs with (E)EPROMs


turmoni/9pin2supergun
Project to read a CD32, Mega Drive/Genesis, or generic 9-pin gamepad and output each control to a separate pin

turmoni/9pin2supergun
Project to read a CD32, Mega Drive/Genesis, or generic 9-pin gamepad and output each control to a separate pin