Dwedit's Board

rememberthe8bit

End user

From: Rochester, NY

Registered: 2008-02-23

Posts: 21

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Rewriting the GBAMP's entire firmware...

I was wondering, now that we have a version of PocketNES running on the GBAMP's flash memory, can the entire firmware be replaced with PocketNES? It would be nice to also have support for loading multiboot GBA software. Also, less importantly, could we move things around in memory so that we could also use chishm's firmware hack?

Dwedit

Administrator

From: Chicago

Registered: 2004-12-12

Posts: 1,023

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Re: Rewriting the GBAMP's entire firmware...

You may notice that "run_pocketnes.gba" is exactly 8 bytes long... that program is only a single jump.
I was planning on having pocketnes autoboot, the only reason I haven't done it yet is that I haven't figured out exactly how to return to the normal firmware.

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"We are merely sprites that dance at the beck and call of our button pressing overlord."

rememberthe8bit

End user

From: Rochester, NY

Registered: 2008-02-23

Posts: 21

Website

Re: Rewriting the GBAMP's entire firmware...

Perhaps, overwrite the "Not licensed blah..." warning with the 8 byte jump program and when you choose "Exit" in PocketNES have it jump to right back to the firmware... Assuming the warning message is located in the beginning of the NOR...