The Sega Genesis, known as the Mega Drive[b] in regions outside of North America, is a 16-bit home video game console developed and sold by Sega. The Genesis was Sega's third console and the successor to the Master System. Sega released the console as the Mega Drive in Japan in 1988, followed by North America as the Genesis in 1989.

So many great games!

Don't forget the pre Sega Saturn - 32x expansion module! Virtua Racing anyone?

<Model Number: MK-1601 (r1), MK-1631 (r2).
CPU: Motorola 68000 at 7.61 MHz
1 MByte (8 Mbit) ROM Area
64 KByte RAM Area
Co-Processor: Z80 @ 4 MHz (Not Present in MK-1631)
Controls PSG (Programmable Sound Generator) & FM Chips
8 KBytes of dedicated Sound Ram
Graphics:
64 simultaneous colors of 512 color pallete.
Pixel resolution: 320 x 224
VDP (Video Display Processor)
Dedicated video display processor
Controls playfield & sprites
64 KBytes of dedicated VRAM (Video Ram)
64 x 9-bits of CRAM (Color RAM)
3 Planes: 2 scrolling playfields, 1 sprite plane
Sound:
PSG (TI 76489 chip)
FM chip (Yamaha YM 2612)
6-channel stereo
8 KBytes RAM
Signal/Noise Ratio: 14dB