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fix mishap. also likely more accurate behavior for DSi secure area shito.

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This commit is contained in:
Arisotura
2021-04-14 22:57:10 +02:00
parent 1eb63089cd
commit 41230881b2
1 changed files with 6 additions and 5 deletions
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11
src/NDSCart.cpp
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@ -734,11 +734,12 @@ int CartCommon::ROMCommandStart(u8* cmd, u8* data, u32 len)
u32 addr = (cmddec[2] & 0xF0) << 8;
if (CmdEncMode == 11)
{
// TODO: should use entries 0x90/0x92 to determine where the DSi region starts??
// DSi secure area starts with 0x3000 unreadable bytes
u32 arm9i_base = *(u32*)&CartROM[0x1C0];
addr -= 0x4000;
addr += arm9i_base;
// the DSi region starts with 0x3000 unreadable bytes
// similarly to how the DS region starts at 0x1000 with 0x3000 unreadable bytes
// these contain data for KEY1 crypto
u32 dsiregion = *(u16*)&ROM[0x92] << 19;
addr -= 0x1000;
addr += dsiregion;
}
ReadROM(addr, 0x1000, data, 0);
}