Sega Genesis | Wikipedia Page
Year Released: August 14th, 1989
Model Number: MK-1601 (r1), MK-1631 (r2), MK-1641 (r3)
CPU: Motorola 68000 running at 7.61 Mhz
ROM: 1 MByte (8 Mbit)
RAM: 64 KByte
Co-Processor: Z80 @ 4 MHz (Not Present in MK-1631) controls PSG (Programmable Sound Generator) & FM Chips
Sound RAM: 8 KBytes
Colors Available: 512
Colors on Screen: 64
Pixel Resolution: 320 x 224
Graphics: VDP (Video Display Processor) dedicated video display processor, controls playfield & sprites. 3 Planes, 2 scrolling playfields, 1 sprite plane.
VRAM: 64 KBytes (Video Ram)
CRAM: 64 x 9-bits (Color RAM)
Sound: PSG (TI 76489 chip), FM chip (Yamaha YM 2612) 6-channel stereo, 8 KBytes RAM Signal/Noise Ratio: 14dB
Sega Megadrive (European Genesis and CD) | Wikipedia Page
Year Released: 1989
CPU: Motorola 68000 running at 7.67 MHz
ROM: 20 KByte
RAM: 64 KByte
Colors Available: 512
Colors on Screen: 64
Pixel Resolution: 320 x 224
Maximum Onscreen Sprites: 80
Sound: Yamaha YM2612 6 channel FM. Additional 4 channel PSG
Sega CD | Wikipedia Page
Year Released: 1992
Main Processor: Motorola 68000 processor running at 12.5 MHz
Co-Processor: GPU custon ASIC (Sega CD) 68000, Z80 (Genesis) 2X SH-2 (32X)
Data Path width: 16-bits
Color Palette: 512
On screen: 64
Sound: 8 channel stereo with CD-ROM audio
Ram: 6 Megabits (0.75 Megabytes)
Rom Addressing: Can read genesis cartridges
CD Size: 500 Megabytes
CD transfer rate: 150kb/s (1 speed PC equivalent)
Super Nintendo (SNES) | Wikipedia Page
Year Released: August 13th, 1991
Main Processor: 16-bit Central Processing Unit 65C816
Co-Processor: none (DSP and SuperFX were made inside the cartridge of selected games)
RAM for CPU: 128KB
Clock Speed: 3.58 MHz
Video RAM for PPU: 64KB
Maximum Colors on Screen: 256
Total Colors Available: 32,768
Maximum Screen Resolution: 512 pixels x 448 pixels
Maximum Sprites Per Screen: 128
Maximum Sprites Per Line: 32
Maximum Sprite Size: 64 pixels x 64 pixels
Minimum Sprite Size: 8 pixels x 8 pixels
Scrolling: Horizontal, Vertical, Diagonal
Sound: SPC700 ("wavetable-like" music, near 16-bit sound quality playback (CD) & Q-Sound surround sound)
Sound channels: 8
Audio Out Impedance Level: 4 ohms
Cartridge Size: 4Mbit - 128 Megabit Maximum (Tengay Maikio is 70+ Megabits, being the largest game)
Controller: 8-way direction pad with 8 buttons (2 flipper buttons)