Pokemon Fire Red Exp Multiplier X2 Online

| Pokémon defeated | Base EXP | Normal gain | With 2× patch | |----------------|----------|-------------|----------------| | Rattata (Lv.3) | 45 | 45 | 90 | | Pidgey (Lv.5) | 55 | 55 | 110 | | Trainer battle | 400 | 400 | 800 |

No overflow occurs under normal gameplay (max EXP per battle < 2^20, doubling stays within 32-bit). pokemon fire red exp multiplier x2

00 00 47 70 to:

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. | Pokémon defeated | Base EXP | Normal

Original bytes: 00 00 47 70 Patch to: 40 00 47 70 Original bytes: 00 00 47 70 Patch to:

We overwrite a few preceding bytes to add lsl r0, r0, #1 (logical shift left by 1 = multiply by 2), then return.