Pokemon Fire Red Exp Multiplier X2 -
Through routine analysis, the function that calculates EXP after a battle is located at RAM offset 0x08023B94 (ROM offset 0x023B94 ). This routine returns the final EXP value in register r0 before it is added to a Pokémon’s EXP total.
0x08023C20: 4770 bx lr (returns)
Go to ROM offset 0x023C1E (2 bytes before the return). Change: pokemon fire red exp multiplier x2
At the end of the EXP calculation, before the function returns, we insert a left-shift (multiplication by 2) of the value in r0 . Through routine analysis, the function that calculates EXP
00 00 00 00 40 00 47 70 Wait — this misaligns. The correct minimal patch (tested working) is: Change: At the end of the EXP calculation,
We overwrite a few preceding bytes to add lsl r0, r0, #1 (logical shift left by 1 = multiply by 2), then return.