ShuriZma
/
project64
mirror of https://github.com/project64/project64.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #492 from Nekokabu/master 

support 6103, 5, 6
This commit is contained in:
zilmar 2015-06-17 05:20:22 +10:00
parent e4acf17a77 7748b0109c
commit 29adb3f782
1 changed files with 57 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
Source/Project64/N64 System/N64 Rom Class.cpp
View File

@ -258,24 +258,37 @@ void CN64Rom::CalculateCicChip()
void CN64Rom::CalculateRomCrc()
{
DWORD t0, t1, t2, t3, t4, t5, t7;
DWORD t0, t2, t3, t4, t5;
DWORD a0, a1, a2, a3;
DWORD s0;
DWORD v0, v1;
// CIC_NUS_6101 at=0x5D588B65 , s6=0x3F
// CIC_NUS_6102 at=0x5D588B65 , s6=0x3F
// CIC_NUS_6103 at=0x6C078965 , s6=0x78
// CIC_NUS_6105 at=0x5d588b65 , s6=0x91
// CIC_NUS_6106 at=0x6C078965 , s6=0x85
// 64DD IPL at=0x02E90EDD , s6=0xdd
//v0 = 0xFFFFFFFF & (0x3F * at) + 1;
switch (m_CicChip){
case CIC_NUS_6101:
case CIC_NUS_6102: v0 = 0xF8CA4DDC; break;
case CIC_NUS_6103: v0 = 0xA3886759; break;
case CIC_NUS_6105: v0 = 0xDF26F436; break;
case CIC_NUS_6106: v0 = 0x1FEA617A; break;
default:
return;
}
DWORD OldProtect;
VirtualProtect(m_ROMImage, m_RomFileSize, PAGE_READWRITE, &OldProtect);
switch (m_CicChip) {
case CIC_NUS_6101:
case CIC_NUS_6102:
{
v1 = 0;
t0 = 0;
t5 = 0x20;
v0 = 0xF8CA4DDB + 1; // 0xFFFFFFFF & (0x3F * 0x5D588B65)
a3 = v0;
t2 = v0;
t3 = v0;
@ -283,47 +296,44 @@ void CN64Rom::CalculateRomCrc()
a2 = v0;
t4 = v0;
for (t0 = 0, t1 = 0x1000; t0 < 0x00100000; t0 += 4, t1 += 4){
v0 = *(DWORD *)(m_ROMImage + t1);
for (t0 = 0; t0 < 0x00100000; t0 += 4){
v0 = *(DWORD *)(m_ROMImage + t0 + 0x1000);
v1 = a3 + v0;
a1 = v1;
if (v1 < a3) t2 += 0x1;
v1 = v0 & 0x001F;
t7 = t5 - v1;
a0 = (v0 << v1) | (v0 >> t7);
a0 = (v0 << v1) | (v0 >> (t5 - v1));
a3 = a1;
t3 = t3 ^ v0;
s0 = s0 + a0;
if (a2 < v0){
a2 = a3 ^ v0 ^ a2;
if (a2 < v0) a2 = a3 ^ v0 ^ a2;
else a2 = a2 ^ a0;
if (m_CicChip == CIC_NUS_6105){
t4 = (v0 ^ (*(DWORD *)(m_ROMImage + (0xFF & t0) + 0x750))) + t4;
}
else t4 = (v0 ^ s0) + t4;
}
if (m_CicChip == CIC_NUS_6103){
a3 = (a3 ^ t2) + t3;
s0 = (s0 ^ a2) + t4;
}
else if (m_CicChip == CIC_NUS_6106){
a3 = 0xFFFFFFFF & (a3 * t2) + t3;
s0 = 0xFFFFFFFF & (s0 * a2) + t4;
}
else {
a2 = a2 ^ a0;
}
t4 = (v0 ^ s0) + t4;
}
a3 = a3 ^ t2 ^ t3;
s0 = s0 ^ a2 ^ t4;
}
*(DWORD *)(m_ROMImage + 0x10) = a3;
*(DWORD *)(m_ROMImage + 0x14) = s0;
break;
}
case CIC_NUS_6103:
case CIC_NUS_6105:
case CIC_NUS_6106:
case CIC_NUS_8303:
case CIC_NUS_DDIPL:
case CIC_UNKNOWN:
default:
break;
}
VirtualProtect(m_ROMImage, m_RomFileSize, PAGE_READONLY, &OldProtect);
}