7 Manufacturer : Sega Year of Release : 1988 Units sold : 30 million Best-selling game : Sonic the Hedgehog CPU : 16-bit Motorola 68000 @ 7.6 MHz CPU2 : 8-bit Zilog Z80 @ 3.58 Mhz (sound CPU) RAM : 64 kB / VRAM : 64kB / sound RAM : 8kB Video : 16-bit Sega VDP Resolution : 320×224 pixels, 64 colors (512 colors palette) Sound : Yamaha YM2612 FM and TI SN76489 PSG