What I did is create a game to read out the complete 24000000 range out of the serial port, and stick IDA to that. You can then even see what value variables have at the moment the game loads
Contact me if you want the code for it, I should have it still lying around.
Mmmm, 0x3c = non-cachable 0x24? I should keep that in mind.
The wiki should be online, but it could take a day or two for the dns-entry to propagate. You should be able to access it now or tomorrow.