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Please visit the Emulator list article for a full list of emulated systems and available emulators. Also check out Legal Emulation Resources
The repository Full list of emulators will be updated at any given time, but does not directly list emulators by emulated system.
Note: emulation on the Pandora is not the same as emulating the Pandora on another PC.

Emulators are applications which reproduce another, different computer system in software allowing the software from one machine to be run on another. Emulators are used for a wide range of purposes. For example, OS X provides emulation on x86 computers to allow old PowerPC binaries to be run. Microsoft provide an ARM PDA emulator for testing applications without having to repeatedly copy things onto a device.

One of the most popular uses for emulators however is to play video games from older (or in some exceptional circumstances, current) systems on modern hardware (generally PCs but the Pandora, GP2X, GP32 and PSP are also popular platforms for running emulators). Nintendo sells a number of official emulators through its Virtual Console service for the Wii.

Pandora and emulators

One of the popular uses for the Pandora is to run emulators of old video games systems (though some old home computers and calculators are also emulated). The Pandora is suited to this task because it has a fairly standard control layout similar (or almost identical to) the layouts of the input devices of the systems it emulates. Furthermore, it has an LCD of resolution 800x480, which is large enough to accommodate most older systems without any downscaling. Of course, it is also portable meaning you can play these games whenever and wherever you want without having to carry a TV, machine and collection of cartridges.

What is needed to run emulators

In most cases, emulators can simply load software and run. However, some require a dump of the BIOS ROM stored within the system itself. These dumps cannot be distributed legally without the permission of the company/individual who created them due to them being copyrighted. In some cases (such as the GBA) it may be feasible to extract a dump of the BIOS yourself if you own a GBA and the necessary equipment but for others (like the PlayStation) the only way most people can obtain a BIOS dump is to illegally download it. Each system has a unique BIOS, though many older ones don't have a BIOS at all, or it is emulated along with the hardware. You should check the individual pages for each emulator to see if they need a BIOS dump to run.

An emulator is no use without software to run on it. These normally come in the form of ROM dumps (since they are extracted from the ROM chips that used to be used to distribute software) generally known as just "ROMs". A few ROMs are "homebrew", that is, free software or freeware. However, ROMs of commercial games are illegal under copyright law unless you dump them yourself (and even then you are only allowed to make use of them under very specific circumstances). ROMs for one system will not work on another system's emulator, just as you can't plug Super Nintendo cartridges into a PlayStation and run them. As such, you need ROMs for each system and an emulator for each system (though some special cases exist such as MAME which will run ROMs from multiple arcade systems).

What the Pandora can emulate

The Pandora, despite its apparent low clock speed when compared to those of modern desktop PCs, is a powerful system (clock speeds cannot be reliably compared between systems). Although there is very little hardware for accelerating graphics functions, the CPU is fast enough to emulate many systems purely in software. This means that there are literally tens of thousands, possibly hundreds of thousands of games which can be played on the Pandora if you are able to obtain the software. You can see for yourself what the Pandora can emulate by checking the Emulator List.

Where to download emulators

Most software (including emulators) for the Pandora can be obtained from either Pandora Apps or the Pandora File Archive.

Legal ROM Sources

There are a number of websites dedicated to providing downloads to completely legal ROMs, see the page, Legal Emulation Resources for more information. If you choose to download from a source not guaranteed to contain legal ROMs, you should first make yourself aware of the laws regarding ROMs in your region.

Emulator list

See the page, Emulator List.

For a list of announced projects, please see the list of potential emulators and development status on the GP32X forums: [1]