- 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
The Mega Drive is heavily based on the Model 16A Arcade Board with the difference being that the Mega Drive can only display 80 Sprites (instead of 128), only has access to 512 color (instead of 4096 colors), the CPU is clocked at 7.6 MHz (instead of 10 MHz) and lastly the hardware sprite zooming is misssing in the Mega Drive.
