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Sega Genesis(Mega Drive) Emulators


The Sega Genesis was one of the two great 16-bit systems of it's time, the other being the Super Nintendo. As Sega was not able to obtain the trademark in the US, the unit was called Genesis there. The Genesis had two major addons: a 32-bit extension called 32X and a CD-ROM drive called Mega CD.

We should also point out that at some point a Sega Master System converter was released that allowed it's games to be used on the Genesis.

Genesis Specs:
  • 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)
    - 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

32X Specs:
  • CPU: Dual Hitachi SH-2 RISC Processors @ 23 MHz each, 40MIPS.
  • Co-Processors:
    - Genesis 68000, and Z80
    - Genesis 32X VDP
  • Graphics:
    - 32,768 simultaneous colours on screen
    - Genesis resolution
    - Overlaying over existing Genesis/SegaCD video
    - 50,000 texture-mapped polygons/sec
    - Texture mapping
    - Hardware scaling and rotation
  • Sound:
    - Stereo PCM chip
    - Audio mixing with Genesis sound
    - Additional 2 channels (8 Channels total, or 16 with SegaCD)
   Mega CD Specs:
  • CPU: Motorola 68000 @ 12.5MHz
  • Memory:
    - 6Mbit (Program, picture data, sound data)
    - 512Kbit (PCM waveform memory)
    - 128Kbit (CD-ROM data cache memory)
    - 64Kbit (Backup memory)
    - 1Mbit (Boot ROM)
  • Sound:
    - PCM Sound Source:
    - Stereo, 8 Channels.
    - 8x Internal over-sampling digital filter
    - PCM and CD sound mixing.
    - Mixing with mixing terminal possible
    - Wavelength characteristics: 20Hz-20kHz.
    - Signal/Noise Ratio: Over 90dB (1kHz) (Line Out).
    - Stereo channel separation: Over 90dB.
    - Sampliing wavelength: 32MHz max.
    - D/A Convertor:
  • 16-bit D/A convertor
  • Misc:
    - Battery Backup Durection: Approx. 1 month
    - 1x CD-Rom Drive Speed (150kb/s)
    - Audio Out: L/W RCA pin jack.
    - Dimensions (WHD): 301mm x 212.5mm x 112.5mm (r1).

Sega Genesis



Sega Genesis & 32X



Sega Genesis & MegaCD

Emulators


 Fusion   Windows   Freeware          Rating: Full StarFull StarFull StarFull StarHalf Star 8.8 (1373 Votes) 
  Multi system SEGA emulator
 Gens   Windows   Freeware          Rating: Full StarFull StarFull StarFull StarHalf Star 8.5 (613 Votes) 
  Genesis/Mega Drive emulator.
 BizHawk    Windows   Open-Source          Rating: Full StarFull StarFull StarFull StarNo Star 8.2 (63 Votes) 
  Multi-system emulator designed for Tool-Assisted Speedruns (TAS)
 Gens Plus!   Windows   Free          Rating: Full StarFull StarFull StarHalf StarNo Star 7.8 (133 Votes) 
  
 RetroArch    Multi-platform   Open-Source          Rating: Full StarFull StarFull StarHalf StarNo Star 7.8 (29 Votes) 
  Frontend for the Libretro API, effectively a multi-system emulator
 higan    Windows   Open-Source          Rating: Full StarFull StarFull StarNo StarNo Star 7.6 (232 Votes) 
  Multi-system emulator with emphasis on emulation accuracy
 Ages   Windows   Freeware          Rating: Full StarNo StarNo StarNo StarNo Star 5.7 (27 Votes) 
  Genesis/Mega Drive emulator.
 RetroDrive   Windows   Freeware          Rating: Half StarNo StarNo StarNo StarNo Star 5.5 (13 Votes) 
  Genesis/Mega Drive emulator.
 HazeMD   Windows   Free          Rating: Half StarNo StarNo StarNo StarNo Star 5.3 (8 Votes) 
  
 DGen/SDL   Windows   Open Source          Rating: Half StarNo StarNo StarNo StarNo Star 5.1 (17 Votes) 
  Sega Genesis/Mega Drive emulator
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