Glitch City Laboratories Archives

Glitch City Laboratories closed on 1 September 2020 (announcement). This is an archived copy of a thread from Glitch City Laboratories Forums.

You can join Glitch City Research Institute to ask questions or discuss current developments.

You may also download the archive of this forum in .tar.gz, .sql.gz, or .sqlite.gz formats.

Generation I Glitch Discussion

A highly interesting item memory corruption pattern - Page 1

A highly interesting item memory corruption pattern

Posted by: Torchickens
Date: 2017-12-08 11:56:06
In Pokémon Red (and Blue, confirmed this to be extra sure both it is unterminated and has the effect in the next paragraph), when glitch item hex:77 is used in battle it will usually result in the TMTRAINER effect. This is expected because the glitch item has an unterminated name.

However, if a 0x50 sub-tile is present in the battle screen data earlier than usual (possible with GameShark code 0150A0C3, OAM DMA hijacking might work though) then you can get a luck dependent corruption effect that goes E4 35 00 35 in the SRAM (unbanked/SRAM bank 0 after further analysis) and repeats. For some reason as well, there will be a black bar 'r corruption pattern on the screen and freeze.

Want to have a go at analyzing this TheZZAZZGlitch please?

[img]https://i.imgur.com/OawuXa4.png[/img] [img]https://i.imgur.com/Cy64T17.png[/img]