ASM code to write to memory with ps2rd

[bungholio]

This is just a tiny little thing I made in about 5 minutes and tested. It works perfectly. Just use it with ps2rd to write codes to memory while playing, since ps2rd doesn't have that ability yet. It's only 41 lines of code, which surprises me because I kept thinking something this simple would have been twice that size.

2??????? 0803c000
200efff0 0???????
200f0000 3c19000f
200f0004 8f38fff4
200f0008 8f2ffff8
200f000c 8f2efffc
200f0010 8f2dfff0
200f0014 340cfeef
400f0018 00040002
118d000f 00000000
200f001c 340cfedf
200f0024 340cfebf
200f002c 340cfe7f
200f0034 340cfdef
200f0038 118d0012
200f003c 340cfddf
200f0040 118d0017
200f0044 340cfdbf
200f0048 118d0018
400f0050 00040002
03e00008 00000000
200f005c af0f0000
200f0064 a70f0000
200f006c a30f0000
200f0070 af20fff4
200f0074 af20fff8
200f0078 34180001
200f007c 03e00008
200f0080 af38fffc
200f0084 000e7040
200f0088 34180001
200f008c 3c0f0800
200f0090 15f8fffe
200f0094 27180001
400f0098 00030003
03e00008 00000000
200f009c af2efffc
200f00a0 030ec025
200f00a8 af38fff4
200f00ac 01ee7825
200f00b4 af2ffff8

That can be copied and pasted to every game if you want. Only the first and second lines are different from game to game.

The first line is the address that jumps to this function. Just load the game's ELF file, invoke the analyzer, and use labelmates to find "scesifsendcmd". Whatever address its "jr ra" is is the address you should use to jump to this function. For example, it would be 20119c04 0803c000 for "Obscure: The Aftermath NTSC".

The second line is the address of the joker/pad address. For "Obscure: The Aftermath NTSC" it would be 200efff0 00552b02.

Buttons:
L2 + Up = Write 4 bytes to address
L2 + Right = Write 2 bytes to address
L2 + Down = Write 1 byte to address
L2 + Left = Reset Address & Value to 0, reset ORed value to 1
R2 + Up = Shift ORed bit left 1 bit
R2 + Right = OR the OR value to the address
R2 + Down = OR the OR value to the value

R2 + Up will intentionally pause the game for about 1 second. It's that way so you don't shift the bit left 50 times in an instant.

You start by pressing L2 + Left. Once you know the address and value you want to write to the address, you use R2 + Up to shift the bit, and R2 + Right & R2 + Down to OR that bit to create the address and value you want write to that address. If you mess up, just Press L2 + Left and restart. Use ps2cc or whatever to see the memory in case you aren't sure of what you are doing. All you would need to look at are addresses 000efff4 (your address), 000efff8 (your value), and 000efffc (the value you OR to the address and value to create them).