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→Hardware Variants: Accessories missing.
Unlike consoles like the SNES, which natively generate the image in pure RGB, the Famicom normally generates and outputs an encoded NTSC video signal, which must then be decoded by the TV's built-in NTSC decoder. This means the resulting color palette often varies depending on the display's decoder. This is why NES games appear to have different colors on different TV sets. Famicom emulators have a variety of different palettes to choose from.
==Hardware VariantsPeripherals==There were many accessories released for the NES but Emulation General will only cover accessories that are truly different data streams other than the basic controller (input data stream). For example, the Power Glove is just a really complicated NES controller to convert motion into d-pad, select, start, a, and b button commands. Same goes for R.O.B. for ''Stack-up'' and ''Gyromite'' because it was just the second player.===Zapper===This accessory was very common. It was used for many games, such as ''Duck Hunt'' and ''Wild Gunman'' just for two examples. When the trigger is pulled, the screen for 1-2 frames flashed black with a white rectangle (the target to shoot at). If the gun detected it was pointing at the white, it told the game to register a hit. Real hardware, this was very hit or miss. It mainly worked with old CRT TVs. Newer TVs will not register with the Zapper. Many emulators support this accessory with 100% accuracy hit detection, usually with a mouse click (PC), tap (for mobile), remote ([[Wii]] ports of NES emulators), or faked pointers using a controller.
===Famicom Disk System===
A Japan-only peripheral using the disk format instead of cartridges, with unique games made for it, some of which were later ported to the regular NES/Famicom cartridge format with significant downgrades (especially the loss of enhanced FDS hardware audio).
It's interesting to note there are two versions of this BIOS; [[Wikipedia:Family Computer Disk System|Nintendo's peripheral]] and [[Wikipedia:Twin Famicom|Sharp's Twin Famicom]]. The only difference is Nintendo's displays ''Nintendo'' while [[Wikipedia:Sharp Corporation|Sharp]]'s displays ''Famicom'' when the hardware is first booted. Other than that, they function identically.
===Famicom Keyboard===
One game used a keyboard to program in BASIC on a Famicom and that was ''Family BASIC''. It is unknown if any emulator supports the keyboard.
====Data Recorder====
The Data Recorder is a related accessory to the Famicom Keyboard. Only three games and one accessory supported the Data Recorder; ''Excitebike'', ''Mach Rider'', ''Wrecking Crew'', and ''Family BASIC''. These games sent an analog audio stream through the keyboard to a cassette tape deck, but any device capable of analog audio recording/playback can work with it. The "sound" is really just 0s and 1s to represent the data the games are trying to write. It is unknown if any emulator supports saves of this kind.
===Miracle Piano Teaching System===
By the Software Toolworks, the ''Miracle Piano Teaching System'' used an electronic piano keyboard as input. It is unknown if any emulator supports this feature.
==Hardware Variants==
===VS System===
An arcade system based on the NES released for the US. Most emulators have an option to let you "Insert Coin(s)".
