D8048AH Sound CPU are 8-Bit CPU, RAM, ROM, I/O in Single Package, DIP-40 Ceramic Package. Dual in-line devices fabricated using National Semiconductor’s scaled N-channel, silicon gate MOS process, XMOS. The 48-Series devices contain the system timing, control logic, ROM (where applicable) program memory, RAM data memory and 27 I/O lines necessary to implement dedicated control functions. All 48-Series devices are pin compatible, differing only in the size of on-board ROM (where applicable) and RAM. This MPU is used on many arcade and pinball applications such as sound CPU on the Nintendo Donkey Kong game boards and many others. This CPU can replace any of the following: D8035AH, INS8048, INS8035, P8035, P8048AH, QD8048AH, QP8048AH, LD8048AH, LP8048AH, TD8048AH, TP8048 and many others.