SEGA Mega Drive
16-bit does what Nintendon't
The Mega Drive (Genesis in North America) was SEGA's flagship 16-bit console, powered by a 68000 processor and featuring the distinctive Yamaha YM2612 sound chip.
Overview
The SEGA Mega Drive (1988 in Japan, 1989 in North America as Genesis) was SEGA’s most successful home console. Its 68000 processor delivered arcade-quality games, while aggressive marketing positioned it as the cool alternative to Nintendo’s offerings.
Technical Specifications
| Component | Specification |
|---|---|
| CPU | Motorola 68000 @ 7.67 MHz |
| Co-processor | Zilog Z80 @ 3.58 MHz (sound) |
| RAM | 64 KB main, 8 KB sound |
| VRAM | 64 KB |
| Colours | 512 palette, 64 on screen |
| Resolution | 320×224 or 256×224 |
| Sprites | 80 on screen, 20 per line |
| Sound | Yamaha YM2612 FM + SN76489 PSG |
Notable Features
- Blast Processing: Marketing term for the 68000’s speed
- FM synthesis: Rich, distinctive sound from the YM2612
- Expansion: 32X and SEGA CD add-ons
- Six-button controller: Later revision for fighting games
Legacy
The Mega Drive established SEGA as a major console manufacturer and created iconic franchises including Sonic the Hedgehog. Its sound chip’s distinctive FM tones remain influential in modern chiptune and game music.