If you use gpSPhone as the emulator to play GBA games on your iPhone, you might be asked to download an Image file first. This image file is a 16k GBA Bios file. You could find it anywhere on the Internet, I found mine at: http://www.filestube.com/442fc2b56b0a05db03e9,g/gba-bios.html
You have to download the file and place it under: /private/var/mobile/Media/ROMs/GBA of your iPhone.
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In the early days of video games, such as the Atari era, it was understood that computers and video games are related, and many game systems also had an optional programming cartridge, keyboard, and other tools for interacting with the system. The manufacturers were not too restrictive about modifications to their systems.
Later systems, such as Nintendo’s, built a strong business around being a “gatekeeper” of titles, and it was difficult to create cartridges for this system without going through them. But by the 1990s, when games became epic in …

Getting a Homebrew ROM
Horrible Demon 4 is a side-scrolling action/adventure game with many acrobatic features, created by homebrew developer Bertil Hörberg. It is similar to Castlevania 2, with the addition of RPG-style item collecting. You’ll find the ROM at www.gambitstudios.com/freedom2001_entries.asp.
You can find Bertil’s home page at http://beril.se.
Installing gameboy4iphone

Install gameboy4iphone through Cydia. The source is www.zodttd.com; if you don’t find it in Cydia, you can figure out which repository to add by checking ZodTTD’s site.
Gather up the ROM (s) for the game(s) you want to play. Make sure that the …

The Nintendo Entertainment System was released in 1985, and its 8-bit might brought the entire video game industry out of the confusing failing mess that it had been in two years prior.
It set the standard for game design and controller layout for all future consoles. Many of the most memorable classic games were for this very console. It dominated the market until the release of the Sega Genesis a few years later.
Remember when I was a little boy, I could play it for hours everyday. After so many years, …

With the native application genesis4iphone, you can be playing Sega genesis games on your iPhone within minutes.
The Sega genesis , known outside north america as the Sega mega drive, was released at the end of the 1980s. it was known for its many fast-paced action and platform games.
Getting a Homebrew ROM
pier solar (Figure 5-6) is a role-playing game (RPG) with a turn-based battle system like Final Fantasy i, developed by Watermelon, juicy development. it’s the first new Genesis RPG to be developed this millennium.
You can find the ROM file …