In English Ruby Debug 1.0, at 0x390300 in the ROM, (and in other versions/languages in a different location) the following bytes can be found:
These are the options selectable via the test menu (Select on title screen), 3 on the first page and 7 on the second;
the range of valid options is 0 to F but not all of them are ordinarily accessible, have fun
Code:
03 06 04 FF 00 00 00 00 00 00 05 09 0A 0C 0D 0E
0F FF
the range of valid options is 0 to F but not all of them are ordinarily accessible, have fun