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Proto:Game Boy Advance BIOS
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This page details one or more prototype versions of Game Boy Advance BIOS.
This prototype BIOS was found on a prototype Game Boy Advance unit which was used for demoing games. There don't seem to be any major under-the-hood differences, however.
Main Differences
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- The intro jingle is different: the first part sounds more lower-pitched, while the second part resembles the jingle of the original Game Boy.
- Holding Start and Select at the same time does not hide the Nintendo logo.
- On the final BIOS, if no cartridge is inserted, the Nintendo logo will simply not be present. When using this BIOS, glitchy graphics will be displayed instead.
| Japanese Debug (Proto) | Final |
|---|---|
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