Non-ACE way to properly get 3TrainerPoké in Yellow without trades!
Posted by: Torchickens
Date: 2018-02-11 14:12:07
This makes use of Yellow 'Pokédex' glitch item move 0x00 corruption. While technically possible with expanded party encounter table manipulation (a glitch I put together mainly just for the purpose of finding 3TrainerPoké in the wild), it is easier and less complicated.
If you're like me (and Abwayax if I remember correctly) 3TrainerPoké is one of my favourite glitch Pokémon and it's a bit of a shame it could only be obtained without trading with arbitrary code execution.
Do note this glitch may suffer the same issues as Red/Blue move 0x00, where eventually due to how its internal name is found (0x50 bytes into RAM) the glitch may stop working with no definite way to fix it other than maybe adjusting the 0x50 bytes in memory.
Getting 3TrainerPoké is normally not possible with Rival LOL glitch because 0x00 double serves as a control character there.
Initial requirements:
You will need a Pokémon with move 0x00 as move 1.
This is possible without arbitrary code execution with one of at least three glitches:
1. Level up a glitch Pokémon (refer to http://glitchcity.info/wiki/-_(Generation_I_move)#In_Pok.C3.A9mon_Yellow). In order for it to learn move 0x00 as move 1, it must already have four moves.
One of these glitch Pokémon ( . (C1)) learns it at Level 16 and Level 22. Note it does have a solid black glitch screen, so in order to see what's happening on the items and Pokémon menu better you may play the game in Super Game Boy mode (or DMG mode?).
1i) Before you raise it (such as with Rare Candies) it's best to use the items pack in the safe spot to avoid any potential move 0x00 corruption that could freeze the game (and possibly destroy the save file).
[img]https://i.imgur.com/jHpsgSi.png[/img]
2. The Pokémon Bank hex:FF glitch will give you a Q (FF) with no moves. If I remember rightly Struggle can be avoided by giving the glitch move PP. I'm not sure if it has since been patched however.
3. Trade a Ditto from the swapping Transform moves glitch from Red/Blue to Yellow (as this glitch does not work in Yellow).
4. Byte shift glitches (unconfirmed, I tried the large storage box data shift glitch but there was an issue; possibly problematic experience points?)
5. Expanded party from Super Glitch or the SRAM glitch at the beginning of the game (unconfirmed but should be possible)
You will also need to have set up the expanded items pack and obtained the Pokédex (hex:09) glitch item.
Method
1. Prepare a box with at least 17 Pokémon. Pokémon slot 16 must be 0x91 (Marowak), because 0x91 is an 'empty' map building block in the TileBlockDex. Pokémon slot 17 must be Magmar (0x33), which is not normally available but can be obtained with Trainer escape glitch or Rival LOL glitch (you will need to have obtained the expanded items pack for the Pokédex glitch item by this point).
2. Prepare Rare Candy x127 and TM18 (this will spell out your map pointer as DA7F).
3. Get a wild Pokémon encounter here (you may need to open up the Pokémon menu here too):
[img]https://i.imgur.com/1t37ey6.png[/img]
4. Open the items pack and swap the Rare Candy x127 into item 33 and TM18 into item 34. It's easiest to do item 34 first because you can press Select on item 33 on the way back up and save a bit of time/navigate the menu better. Item 34 should initially be a HM04, so if you spot one you've probably found it.
5. Open the Pokédex and close it. The battle should now look something like this. Depending on your Pokémon count and the Pokémon up to slot 17/18, as well as data after those addresses the screen will look different. However the essential part is in the rectangle in the image below. If it doesn't have those tiles in that position (from BGB coordinates x=01, y=06; note greater y values are further down here), something must have gone wrong.
[img]https://i.imgur.com/xELTkfR.png[/img]
6. Open the items menu again (really important) and keep scrolling the Fight menu until (possibly) the music fades out. Exit the fight menu (but don't run away) and throw a Master Ball.
[img]https://i.imgur.com/XZPSLwl.png[/img]
Congratulations! 3TrainerPoké is yours. :)
Escaping the Glitch City:
After the battle finishes, we will be placed in a Professor Oak's Lab Glitch City.
[img]https://i.imgur.com/UEtXsZ4.png[/img]
Using the expanded items pack however, we can change the map type to allow us to Fly away.
All you need to do is access item 37 and then swap it with any item x0, with a Pokémon with Fly already prepared.