It's not the fastest way to beat the game because it requires a potion first (and 150 rupees for a red potion in town), and even defeating Ganon without ACE is around 10 minutes ... but the 3 minute setup time for total control should be optimal as far as I know. As for how the glitch works: - $0010 is used for the game mode (menu screens, overworld, dungeon, etc.), and $0011 is generally used as a submode (transitions, parts of cutscenes or events, etc.) - Using a red potion sets both values to 0E 04 (during the life refill) then back, and opening the door changes only $0011 to 0C (normally giving 09 0C) - Doing both at the same time will first set 0E 04 then overwrite the second byte, resulting in 0E 0C which is out of range When the game is in that invalid mode, the code jumps to $00F8, which conveniently happens to store the last frame's player input (low byte, with the high byte at $00FA). So from there I execute 4C 00 42 (JMP $4200, leading to controller registers at $4218) and do whatever I want. Here I change variables and get sword 133 (which kills Ganon in one hit), then set up a warp to Ganon and return the game to a normal mode ($0010=11, like falling into a hole). I could also set $0010=19 to finish the game instantly or skip to credits, but where's the fun in that?