7 Manufacturer : Sega Year of Release : 1985 Units sold : 13 million Best-selling game : Alex Kidd in Miracle World CPU : 8-bit Zilog Z80 @ 3.58 MHz RAM : 8 KB / VRAM : 16 KB Video : Sega VDP (custom Texas Instruments TMS9918) Resolution : 256×192 pixels, 32 colors (64 color palette) Sound : TI SN76489 PSG / add-on module YM2413 FM Cart Size : 32 KB - 1 MB