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[[File:Sega-Genesis-Mk2-6button.jpg|thumb|220px|Sega Genesis Model 2 w/ 6-button controller]][[File:Sega-Nomad-Front.jpg|thumb|220px|Sega Genesis Nomad, portable variation]]The '''[[gametech:Sega_Genesis|Sega Genesis]]''' is a 16-bit, fourth-generation console released by [https://en.wikipedia.org/wiki/Sega Sega] in Japan on October 29, 1988and in the US on August 14, 1989. It had a Motorola 68000 CPU at 7.6 MHz and a Zilog Z80 at 3.58 MHz. In other regions, it was known as the '''Mega Drive'''. It had several add-ons, including the Sega CD (a CD add-on, called Mega CD outside America) and the 32X (a 32-bit, cartridge-based add-on).

The Sega CD was released on October 15, 1992 and retailed for {{Inflation|USD|299.99|1992}} and had a Motorola 68000 CPU at 12.5 MHz and 64 kbit of RAM. The Sega 32X was released on November 21, 1994 for {{Inflation|USD|159.99|1994}}. It had 2 SH-2 RISC CPUs at 23 MHz with 256KB of RAM and 256KB of VRAM. Genesis emulation is very good, with a high degree of game compatibility (many of them claiming nearly 100% compatibility with commercial games, including Virtua Racing). They are available on many platforms. Many Genesis emulators also feature compatibility with the [[Master System emulators|Sega Master System]] (SMS), and the [[Master System emulators|Game Gear]] (GG) as well as earlier Sega consoles. Genesis-based arcade boards and the Sega Pico are still sketchy, however.

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===Comparisons===;[[Genesis Plus GX]]:A very solid emulator for the Gamecube and WiiSega Genesis / Sega Master System / Sega CD / Game Gear. The only thing things it lacks is lack are 32X and Pico support, and a native desktop port; the only way to get this emulator on the desktop is to use the libretro core, which allows for all the benefits of RetroArch like shaders, dynamic sync, and other enhancements. The version used in [[BizHawk ]] adds features for speedrunners.

;[http[PicoDrive]]://aamirmStrongly prioritizes performance over accuracy.hacking-cult.org/www/regen.html Regen]:A focus on Compatibility and accuracy isn't as good as earned it high compatibility with games, Genesis Plus GX but it does not emulate 's useful on very underpowered systems like the Raspberry Pi Zero. Currently the Sega CD first and only cross-platform option for 32X. It also allows overclockingand Pico games.

;[[Gens]http://aamirm.hacking-cult.org/www/regen.html Regen]:Close to Kega Fusion in features and A focus on accuracy as earned it high compatibilitywith games, but has largely been surpassed by better emulatorsit does not emulate the Sega CD and 32X. There are many different forks and iterations of Gens, so your experience will differ quite a lot depending on which version you useIt also allows [[overclocking]].

Genesis Plus GX's [[RetroArch ]] core includes true Lock-On emulation. From the Core Options menu, you can enable the Lock-On feature for either Sonic & Knuckles, Game Genie, or the Action Replay (Pro) -- the latter two using a different technology but with similar effects. Setting this option to anything other than "Off" will enable Lock-on to the cartridge you're currently playing as. After resetting, the game will boot in Lock-On mode.