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| | Most known Game Gear emulators support this function. | | Most known Game Gear emulators support this function. |
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| − | ==Hardware variants== | + | ==Arcade== |
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| − | Several emulators such as MAME and Genesis Plus GX emulates dedicated hardware quirks from multiple variants of both Master System and Game Gear. Here are all the models that can be related to Master System and Game Gear:
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| − | ;SG-1000
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| − | The earlier revision of Sega Mark III. Based on Colecovision after Sega gave up on the plans of distributing them in Japan around 1982. Released in 1983 in Japan and Oceania. Does not include regional differences in software, nor does include a BIOS. All games can be played on Sega Mark III and most of them can be played on the Japanese Sega Master System without problems.
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| − | ;SG-1000 II
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| − | A revised version of the SG-1000. It combines the VDP and SN76489 in one single chip. A prototype diagnosis program, ''SG-1000 M2 Check Program'', can be used to test hardware problems and emulators' accuracy.
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| − | ;Sega Mark III (Japan)
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| − | The first revision of the system. Released in 1985 in Japan, with South Korea and Taiwan receiving it in 1986. Supports almost everything related to SG-1000, although software released only to SC-3000 still works only on SC-3000. Does not have a BIOS and cannot play music on FM and PSG at the same time. SG-1000 games are played with a darker color palette.
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| − | ;Sega Master System (International)
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| − | Released in 1986 in the USA, Australia plus minor European countries, 1987 in mainland Europe, and 1989 in Brazil. Has a different cartridge pinout, a different expansion port pinout (which is canonically unused), and includes a BIOS that prevents unlicensed software from running. Cannot run SG-1000 cartridges and cards (even with an adapter, which must be done by DIY projects) without applying a ROM header in the game. Some Japan-only games do not include this required ROM header, but one exception, ''Woody Pop'', actually runs. Cannot use the FM Sound Unit unless through hardware mods.
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| − | ;Sega Master System (Japan)
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| − | Released in 1987 in Japan and 1989 in South Korea. Supports most SG-1000 titles, except the ones that require the SK-1100 (expansion port pinout is from the International model). Includes a BIOS, but it does not check a ROM header. It also includes the FM Sound Unit built-in. SG-1000 games are still being played with a darker color palette.
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| − | ;Power Base Converter (USA) / Mega Adaptor (Japan) / Master System Converter (International)
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| − | Released in 1989 in Japan plus the USA, 1990 in Europe plus Brazil. Supports about 90% of the Master System library through an adapter for Sega Genesis, which relies on backward compatibility. No BIOS is included, region detection is done by the Genesis itself. It lacks the legacy video modes from SG-1000, which turns SG-1000 games (or SMS games that rely on legacy video modes) unplayable without graphics. Does not include FM Sound Unit, which can only be done with hardware mods or with unlicensed variants of the adapter. It is not directly compatible with Nomad, Genesis 3, or most Mega Drive clones and is totally incompatible with any Genesis system with a 32x.
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| − | ;Sega Master System II (International)
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| − | Released in 1990 in the US, 1991 in Europe plus Australia, and 1992 in Brazil. Supports only cartridges, includes a BIOS with ''Alex Kidd in Miracle World'' (''Sonic the Hedgehog'' in later models), lacks a Reset button, and has improvements on the VDP. Some Brazilian-only games can run only in this model.
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| − | ;Samsung Gam*boy II / Aladdin Boy (Japan)
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| − | Released between 1991~1993 in South Korea by Samsung. Supports games on SG-1000 cartridge pinout, runs games within the "Japan" region, FM Sound Unit is not present, and includes a BIOS with a Korean version of ''Alex Kidd in Miracle World'' (also replaced with ''Sonic the Hedgehog'' in Aladdin Boy) that does not check ROM headers. Otherwise identical to International SMS II.
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| − | ;Sega Game Gear (International and Japan)
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| − | Enhanced VDP and sound features. Does not include a BIOS (save for the Majesco model). The screen area is lower than SMS and does not include the FM Sound Unit built-in. Can run SG-1000 games with external adapters on real hardware (Master Gear Converter is not enough and this doubles even more if the game is only in the Card format).
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| − | ;Arcade
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| | Several Master System-based Arcade boards, mainly produced by Sega themselves, do exist: | | Several Master System-based Arcade boards, mainly produced by Sega themselves, do exist: |
