PAR codes for The Legend of Zelda (NES)

[nuomega457]

Change enemy movement speed in overworld and dungeons:
03BD:??
03BE:??
03BF:??
03C0:??
03C1:??
03C2:??

Note: Using FF for all makes them ridiculously fast and insanely hard to hit them. 50 makes them fast, 01 makes them move super slow. It appears that each separate hex address controls the speed of one enemy on the board, so there maybe more hex address needed after 03C2 to effect more enemies. These codes apply to some but not all enemies.

Enemies don't shoot rocks/arrows, etc..
034C:FF

Note: I only tested this on a game screen where there were only Moblin and Octorok enemies.

[nuomega457]

Ok, I found a few more:

Link's sword makes no sound when you swing it.
0601:00
0603:00
0606:00

Note: His sword does make a sound when an enemy is hit. Some music in the game might be messed up a little.