1 piece MK48C02AK15 150ns 2K x 8 ZEROPOWER RAM with external BATTERY INPUT | eBay
Conversion of 2nd Generation CPU Boards to Use ST Microdevices ZeroPower RAM Backround The biggest worry with a Zaccaria CPU board is the NiCd battery pack used to maintain the CMOS memory when the game is powered off. This battery pack is ...