To copy the same functions of a particular system into another system for similar action is the objective of emulator, which is a program in software or in firmware form. And the result is the programe will perform same action designed for another system.

Generally 2 types of emulators.

1- SOFTWARE EMULATORS - Which are installed in system and make it ready to work on a different software program originally which was installed. which futher result into accepting the game software .

2- HARDWARE EMULATORS - This type of emulators comes in form of a hardware device including fimware which give instructions to the system that what has to be done when game software are loaded.

There are emulators for PSP that are presently available which is compatable for playing n64 games.

To Install an N64 emulator to your PSP is not an easy job also but taking precautions it is very easy like to choose a good website of N64 from where a good quality emulator can be downloaded and do not run for cheap or free emulator.

Download the emulator from a legal website into your system hard disk. Make a folder in directory to save the emulator. Then connect your system with PSP with or via USB port. copy the emulator file from hard disk and paste it on the root directory.

It was in the past when people purchases games from local shops. Now they can directly download movies, games, and software from the internet with their PSP, Just you have to do is put software, games onto your memory stick and instantly it will get transferred in to your playstation portable.

A word of caution, Downloading games or software from the internet is very convinient but can be harmfull also, because it is possible you get engaged with illegal sites which can harm your computer with unwanted viruses. Some sites are their who provides good quality downloads for games, movies, etc for PSP.

The word firmware, it is like the operating system, Firmware  controls the hardware and software and it is possible that each version is different in PSP. Question comes into your mind how to find PSP firmware version ?

Here is the solution, On your PSP search for system Menu, then click on system information and then option system software will apear and you will able to get detailed PSP firmware version.

While searching for websites to download  PSP games, software, movies etc from the internet be cautious. Just keep in mind many sites are there which provide not only games download but also software, movies, song can be downloaded from playstation portable sites and for this they charge very less and in some cases the fees is refundable.