Pokemon Yellow: All Defined Functions - Page 1
I thought you might be interested in this little work I've done.
Here is the list of jump locations of all predefined functions in debug yellow ROM (including glitch ones). Some of them jump to RAM, so may be they can be manipulated.
Also about predef 0x1E, which is stated to be nonfunctional in your list. Actually it calls GiveItem, which gives item based on registers BC: item ID comes from B, amount from C. I always got 32 Repels from using it (i checked in overworld and in battle), not sure, if it can be manipulated though.
P.S. Sorry for necrobumping
Necro is fine if info is added. and… Thanks! Go ahead and add it to the Wiki page… or the Talk page if you don't want to edit the page itself. As the page states, things may have changed based on different factors. Feel free to keep looking!