6 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 : 8kB / VRAM : 16kB Video : Sega VDP (custom Texas Instruments TMS9918) Resolution : 256 × 192 pixels, 32 colors (64 colors palette) Sound : TI SN76489 PSG / add-on module YM2413 FM Cart Size : 32kB - 1MB