The sub-tile varies based on the tileset for the current map. For example, in Route 1 it is the bottom-left corner of a bush, while in Viridian Forest it is an 'up arrow'.
This sub-tile is needed for buffer overflow techniques that have the game attempt to copy saved screen data into another buffer until the first 0x50, such as CoolTrainer♀ move corruption and LOL glitch, and is usually saved on to a screen data copy that is updated every time the player opens the Pokémon or items menu (among some other menus).
Without the player having a 0x50 sub-tile on the screen data copy, it would likely cause the game to freeze during the corruption due to the game copying too much data.
List of 0x50 tiles
Safari Zone File:0x50 tile 3.png|Pokémon Center/
Poké Mart File:0x50 tile 4.png|Celadon Gym File:0x50 tile 5.png|Warden's house File:0x50 tile 6.png|Houses File:0x50 tile 7.png|Pewter Museum File:0x50 tile 8.png|Celadon Game Corner File:0x50 tile 9.png|Celadon Mansion File:0x50 tile 10.png|Bill's House File:0x50 tile 11.png|Vermilion Harbor File:0x50 tile 12.png|S.S. Anne File:0x50 tile 13.png|Pokémon Mansion
(Cinnabar) File:0x50 tile 14.png|Cerulean Bike Shop File:0x50 tile 15.png|Caves File:0x50 tile 16.png|Indigo Plateau File:0x50 tile GRHQ.png|[[Glitch Rocket HQ maps]] (Yellow) File:0x50 tile battle1.png|Battle (no Pokémon sent out) File:0x50 tile battle2.png|Battle (Pokémon sent out). This tile varies based on the user's sprite.
See also0x15 sub-tile
External linksPage on Legendary Star Blob 2 (Hakuda).
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