Well, I was trying to figure out how to walk through walls, but I never figured that out. I did, however, find some other GameShark codes that can help you out...
01xx03C9 - Acre
This one requires you to
find the acres from the ROM. This code allows you constantly be on the same piece of land, regardless of where you actually are on the map. (This code is the very code that got me to figure out how to hack maps in the first place!)
01xx04C9 - Map modifier (This lets you change which map you're on... also, doesn't this order look familiar to you?)
* 00 - ???
* 01 - ???
* 02 - Overworld Map - Upper left quadrant
* 03 - Overworld Map - Upper right quadrant
* 04 - Overworld Map - Lower left quadrant
* 05 - Overworld Map - Lower right quadrant
* 06 - Antenna Tree - Upper left quadrant
* 07 - Antenna Tree - Upper right quadrant
* 08 - Antenna Tree - Lower left quadrant
* 09 - Antenna Tree - Lower right quadrant
* 0A - Toronko Village Water Station
* 0B - Mart/House
* 0C - Kurinon Village Cave - Floor 1
* 0D - Kurinon Village Cave - Floor 2
* 0E - Paparuna Lake Laboratory
* 0F - Panses Village Cave
* 10 - Toripa Antenna Tree Cave - Floor 1
* 11 - Toripa Antenna Tree Cave - Floor 2
* 12 - Toripa Antenna Tree Cave - Floor 3
* 13 - Toripa Antenna Tree Cave - Floor 4
* 14 - Toripa Antenna Tree Cave - Floor 5
* 15 - Peperi Mountain - Floor 1
* 16 - Peperi Mountain - Floor 2
* 17 - Peperi Mountain - Floor 3
* 18 - Peperi Mountain - Floor 4
* 19 - Peperi Mountain - Floor 5
* 1A - Kakotos Relic - Floor 1
* 1B - Kakotos Relic - Floor 2
* 1C - Kakotos Relic - Floor 3
* 1D - Kakotos Relic - Floor 4
* 1E - Kakotos Relic - Floor 5
* 1F - Kakotos Relic - Floor 6
* 20 - Kakotos Relic - Floor 7
* 21 - Kakotos Relic - Floor 8
* 22 - Burion Relic - Floor 1
* 23 - Burion Relic - Floor 2
* 24 - Burion Relic - Floor 3
* 25 - Burion Relic - Floor 4
* 26 - Burion Relic - Floor 5
* 27 - Burion Relic - Floor 6
* 28 - Burion Relic - Floor 7
* 29 - Burion Relic - Floor 8
* 2A - Burion Relic - Floor 9
* 2B - Human World - Main Area
* 2C - Human World - Antenna Tree
* 2D - Human World - Unused Buildings
* 2E - ????
* 2F - ????
* 30 - Second D-Shoot
* 31 - Switch Palace (Activates Palm Sea Antenna Tree)
* 32 - Ion Island Cave - Floor 1
* 33 - Ion Island Cave - Basement 1
* 34 - Ion Island Cave - Basement 2
01xx06C9 - Position on map (This modifies where you are on the map, and is perhaps the most useful code for ripping maps)
The format is like this:
00 01 02 03 04 05 06 07
08 09 0A 0B 0C 0D 0E 0F
10 11 12 13 14 15 16 17
18 19 1A 1B 1C 1D 1E 1F
20 21 22 23 24 25 26 27
28 29 2A 2B 2C 2D 2E 2F
30 31 32 33 34 35 36 37
38 39 3A 3B 3C 3D 3E 3F