rvtr/GodMode9i
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Dump last 32MB from certain GBA Video ROMs

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This commit is contained in:
RocketRobz 2020-09-04 00:39:08 -06:00
parent 864a350b10
commit 3bf8f17b7c
2 changed files with 38 additions and 1 deletions
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1
README.md
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@ -46,6 +46,7 @@ Once everything is downloaded and installed, `git clone` this repository, naviga
* [Evie/Pk11](https://github.com/Epicpkmn11): Contributor.
* [zacchi4k](https://github.com/zacchi4k): Logo designer.
* [Edo9300](https://github.com/edo9300): Save reading code from his save manager tool.
* [endrift](https://github.com/endrift): GBA ROM dumping code from [duplo](https://github.com/endrift/duplo), used for 64MB ROMs.
* [JimmyZ](https://github.com/JimmyZ): NAND code from twlnf (with writing code stripped for safety reasons).
* [zoogie](https://github.com/zoogie): ConsoleID code (originating from dumpTool).
* [devkitPro](https://github.com/devkitPro): devkitARM, libnds, original nds-hb-menu code, and screenshot code.

38
arm9/source/dumpOperations.cpp
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@ -466,6 +466,21 @@ void ndsCardDump(void) {
}
}
void writeChange(const u32* buffer) {
// Input registers are at 0x08800000 - 0x088001FF
*(vu32*) 0x08800184 = buffer[1];
*(vu32*) 0x08800188 = buffer[2];
*(vu32*) 0x0880018C = buffer[3];
*(vu32*) 0x08800180 = buffer[0];
}
void readChange(void) {
// Output registers are at 0x08800100 - 0x088001FF
while (*(vu32*) 0x08000180 & 0x1000); // Busy bit
}
void gbaCartDump(void) {
int pressed = 0;
@ -553,8 +568,29 @@ void gbaCartDump(void) {
// Dump!
remove(destPath);
FILE* destinationFile = fopen(destPath, "wb");
fwrite((void*)0x08000000, 1, romSize, destinationFile);
fwrite(GBAROM, 1, romSize, destinationFile);
fclose(destinationFile);
// Check for 64MB GBA Video ROM
if (strncmp((char*)0x080000AC, "MSAE", 4)==0 // Shark Tale
|| strncmp((char*)0x080000AC, "MSKE", 4)==0 // Shrek
|| strncmp((char*)0x080000AC, "M2SE", 4)==0 // Shrek 2
) {
// Dump last 32MB
u32 cmd[4] = {
0x11, // Command
0, // ROM address
0x08001000, // Virtual address
0x8, // Size (in 0x200 byte blocks)
};
size_t i;
for (i = 0x02000000; i < 0x04000000; i += 0x1000) {
cmd[1] = i,
writeChange(cmd);
readChange();
fwrite(GBAROM + (0x1000 >> 1), 0x1000, 1, destinationFile);
}
}
// Save file
remove(destSavPath);
destinationFile = fopen(destSavPath, "wb");