6 Manufacturer : SNK Year of Release : 1999 Units sold : 2 million, including no color version CPUs : Toshiba TLCS900H @ 6.144 MHz, Z80 @ 3.072 MHz RAM : 12K for 900H, 4K for Z80 RAM : 64 Kbytes Picture Processor Unit : 16-bit Resolution : 160x152 146 colors (256×256 virtual screen) Media : ROM cartridge 4 MB max