ahezard
commented
4 years ago It could be linked to the fact that we ignore the CHEAT_ENGINE_RELOCATE and CHEAT_ENGINE_HOOK mechanism that is present in NitroHax
See NitroHax code https://github.com/ahezard/NitroHax3DS/blob/702fd140f5c0c1e2d11e819bccf854228bab3364/BootLoader/source/cheat.c
define CHEAT_ENGINE_RELOCATE 0xCF000001
define CHEAT_ENGINE_HOOK 0xCF000002
if (cheatData[0] == CHEAT_ENGINE_RELOCATE) { cheatWord1 = cheatData++; cheatWord2 = cheatData++; cheatEngineLocation = (u32*)cheatWord2; }
if (cheatData[0] == CHEAT_ENGINE_HOOK) { cheatWord1 = cheatData++; cheatWord2 = cheatData++; hookLocation = (u32*)cheatWord2; }
And wood does a strange thing with E type code : https://github.com/ahezard/wood3ds/blob/9cb22d2378a201fc7238f9457e48c4e749acfba7/akloader/arm9/source/patches_ar.cpp
else if(code==0xE0000000) { if(custom_asm) { code=0xC2000000; //Modify E code dbg_printf("Custom Asm detected and modified to work.\n"); } }
RocketRobz
Your console
Tell us which console you are using:
CFW and configuration
Tell us which CFW do you have:
DSi:
3DS/2DS:
nds-bootstrap version
Tell us which versions you are using:
Your device
Tell us which card you are using:
If this issue only affects a certain game, which game is it?
all games should be affected but not all of them of this type of cheat code
Expected behaviour
Nothing I try to run with an E code works at all, it just crashes on startup. The same codes work on my flash card (R4i Gold 3DS RTS fecking whatever alphabet soup). E is for patching memory en-masse, you supply an initial address and how many bytes you're patching, then just fill out the bytes sequentially, without supplying an address each time.
Simple example code to demonstrate: E2001234 00000010 DEADBEEF DEADBABE DEB0D1ED F00DFEED
This code has the same result as the longform equivalent: 02001234 DEADBEEF 02001238 DEADBABE 0200123C DEB0D1ED 02001240 F00DFEED
I can think of at least one "major" code that uses the E codetype, the button hack for Star Fox Command, since it's a long ASM hack. It would probably improve cheat compatibility quite a bit to support it. And I've been using them in widescreen hacks.
Actual behaviour
E code should work (works in NitroHax)
Steps to reproduce
OK, so I just wrote a super quick E code for Mario Kart DS (USA) and confirmed it works fine on NitroHax with my retail card. Testing on nds-bootstrap now and ... looks like a crash on startup. Dual white screens. Here's the code if it's helpful for testing:
920775D0 00001555 E20775D0 00000004 00002AAA 00000000 D2000000 00000000 920789BC 00001555 E20789BC 00000004 00002AAA 00000000 D2000000 00000000
It just crunches all 3D elements to half-width, just wanted something I could easily see working.
Other notes
reported by Vague Rant user on discord