r/EmuDev • u/Feeling-Salt5554 • 1d ago

Mips Assembly

Does anyone have experience in this field? I would like to learn assembly instructions specific to the system. Mips I want to modify PlayStation 2 games using a tool. IDA pro

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u/HowziCanReddit 1d ago

learn everything about emotion engine (main cpu): https://israpps.github.io/ps2tek/PS2/EE/

use this plugin for ida: https://github.com/oct0xor/ida-emotionengine

learn about mips: https://www.eecs.harvard.edu/~cs161/notes/mips-part-I.pdf https://www.eecs.harvard.edu/~cs161/notes/mips-part-II.pdf

familiarize r3000 registers and instruction sets: https://ffhacktics.com/wiki/R3000_instruction_set https://acisweb.mit.edu/acis/sdetail/interfaces.html#REF31630

everything to know about r30xx (ref. manual) https://cgi.cse.unsw.edu.au/~cs3231/doc/R3000.pdf

bonus(?): the first emotion engine programming tutorial (PS2TUT01) refers to this doc: https://web.archive.org/web/20061010210946if_/http://decstation.unix-ag.org/docs/ic_docs/3715.pdf

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u/Feeling-Salt5554 1d ago

I'm trying to modify the Teenage Mutant Ninja Turtles game for PlayStation 2. I want to change a player character to an enemy character and play with bosses.

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u/HowziCanReddit 1d ago

you want to patch the actual iso..? Model swaps only change the visual mesh unless the moveset pointers are also modified.

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u/Feeling-Salt5554 23h ago

I edit with Ida pro on Elf