This Cartridge PCB uses one ROM named MPR5743 which seems to be a clone of TOSHIBA TMM23256P, since we have found the same ID name on the CHIP present in ORGUSS Cartridge by SEGA.

If we check all the tracks of both pcb we can realize they are almost the same except for the CMOS Hex Inverter present in the SEGA version.

If some SC-3000 Survivor has some more information can contact us.