Brock through walls: Difference between revisions

The 00 0F path however does not result in walk through walls in English Yellow, so another path must be used, such as the 01 06 or 01 39 path. As in the [[Pokémon Yellow reverse badge acquisition no underflow route]], this works from an odd item slot with [item] x (y-coordinate; typically x16) | HP Up x (x-coordinate; typically x36) | <Max Repel/Bicycle>. For [[Brock through walls#Brock through walls from a wall|Brock through walls from a wall]], the y-coordinate is represented by x15 and the x-coordinate by x35 instead.

As mentioned above, the glitch works by tricking the game into loading an invalid path (path pointer) for the player to follow. If the coordinates and pointer pair for the path is not found at xxx2, whichxxx6, xxxA, or xxxE throughout the memory map the game will lock up never finding it. Assuming the path is found, it is meant to be terminated by 0xFF. The path is copied from hl (path pointer) to $CCF9 onwards. If the path is large enough (but not too large as to freeze the game), it will cause a buffer overflow and overwritesoverwrite $CD3B.