2 layers20.5 × 37.7 mm

82S1xx W27C512 Adapter
SukkoPera/OldPromAdapter
Replace 82s126/82s129/82s131 PROMs with (E)EPROMs
5 parts18
KiCad boards from 4 GitHub repositories tagged “jamma”, the most starred first; open any of them in PCBKit.

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



KabukiFlux/sega-gun-type2-protect-board-hotd2
Sega Gun Type 2 protect board for Jurassic Park LW and HOTD2