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Properly pass through GBA GPIO writes

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This commit is contained in:
Raphaël Zumer
2019-12-10 18:44:53 -05:00
parent ca9f183d24
commit f257b007a2
3 changed files with 92 additions and 0 deletions
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88
src/NDS.cpp
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@ -1803,6 +1803,19 @@ void ARM9Write8(u32 addr, u8 val)
// checkme
return;
case 0x08000000:
case 0x09000000:
if (ExMemCnt[0] & (1<<7)) return; // deselected CPU, skip the write
if (GBACart::CartInserted)
{
if ((addr & 0x00FFFFFF) >= 0xC4 && (addr & 0x00FFFFFF) <= 0xC9)
{
GBACart::WriteGPIO(addr & (GBACart::CartROMSize-1), val);
return;
}
}
break;
case 0x0A000000:
if (ExMemCnt[0] & (1<<7)) return; // deselected CPU, skip the write
if (GBACart::CartInserted)
@ -1854,6 +1867,21 @@ void ARM9Write16(u32 addr, u16 val)
*(u16*)&GPU::OAM[addr & 0x7FF] = val;
return;
case 0x08000000:
case 0x09000000:
if (ExMemCnt[0] & (1<<7)) return; // deselected CPU, skip the write
if (GBACart::CartInserted)
{
// Note: the lower bound is adjusted such that a write starting
// there will hit the first byte of the GPIO region.
if ((addr & 0x00FFFFFF) >= 0xC3 && (addr & 0x00FFFFFF) <= 0xC9)
{
GBACart::WriteGPIO(addr & (GBACart::CartROMSize-1), val);
return;
}
}
break;
case 0x0A000000:
if (ExMemCnt[0] & (1<<7)) return; // deselected CPU, skip the write
if (GBACart::CartInserted)
@ -1905,6 +1933,22 @@ void ARM9Write32(u32 addr, u32 val)
*(u32*)&GPU::OAM[addr & 0x7FF] = val;
return;
case 0x08000000:
case 0x09000000:
if (ExMemCnt[0] & (1<<7)) return; // deselected CPU, skip the write
if (GBACart::CartInserted)
{
// Note: the lower bound is adjusted such that a write starting
// there will hit the first byte of the GPIO region.
if ((addr & 0x00FFFFFF) >= 0xC1 && (addr & 0x00FFFFFF) <= 0xC9)
{
GBACart::WriteGPIO(addr & (GBACart::CartROMSize-1), val & 0xFF);
GBACart::WriteGPIO((addr + 2) & (GBACart::CartROMSize-1), (val >> 16) & 0xFF);
return;
}
}
break;
case 0x0A000000:
if (ExMemCnt[0] & (1<<7)) return; // deselected CPU, skip the write
if (GBACart::CartInserted)
@ -2177,6 +2221,19 @@ void ARM7Write8(u32 addr, u8 val)
GPU::WriteVRAM_ARM7<u8>(addr, val);
return;
case 0x08000000:
case 0x09000000:
if (!(ExMemCnt[0] & (1<<7))) return; // deselected CPU, skip the write
if (GBACart::CartInserted)
{
if ((addr & 0x00FFFFFF) >= 0xC4 && (addr & 0x00FFFFFF) <= 0xC9)
{
GBACart::WriteGPIO(addr & (GBACart::CartROMSize-1), val);
return;
}
}
break;
case 0x0A000000:
if (!(ExMemCnt[0] & (1<<7))) return; // deselected CPU, skip the write
if (GBACart::CartInserted)
@ -2231,6 +2288,21 @@ void ARM7Write16(u32 addr, u16 val)
GPU::WriteVRAM_ARM7<u16>(addr, val);
return;
case 0x08000000:
case 0x09000000:
if (!(ExMemCnt[0] & (1<<7))) return; // deselected CPU, skip the write
if (GBACart::CartInserted)
{
// Note: the lower bound is adjusted such that a write starting
// there will hit the first byte of the GPIO region.
if ((addr & 0x00FFFFFF) >= 0xC3 && (addr & 0x00FFFFFF) <= 0xC9)
{
GBACart::WriteGPIO(addr & (GBACart::CartROMSize-1), val);
return;
}
}
break;
case 0x0A000000:
if (!(ExMemCnt[0] & (1<<7))) return; // deselected CPU, skip the write
if (GBACart::CartInserted)
@ -2286,6 +2358,22 @@ void ARM7Write32(u32 addr, u32 val)
GPU::WriteVRAM_ARM7<u32>(addr, val);
return;
case 0x08000000:
case 0x09000000:
if (!(ExMemCnt[0] & (1<<7))) return; // deselected CPU, skip the write
if (GBACart::CartInserted)
{
// Note: the lower bound is adjusted such that a write starting
// there will hit the first byte of the GPIO region.
if ((addr & 0x00FFFFFF) >= 0xC1 && (addr & 0x00FFFFFF) <= 0xC9)
{
GBACart::WriteGPIO(addr & (GBACart::CartROMSize-1), val & 0xFF);
GBACart::WriteGPIO((addr + 2) & (GBACart::CartROMSize-1), (val >> 16) & 0xFF);
return;
}
}
break;
case 0x0A000000:
if (!(ExMemCnt[0] & (1<<7))) return; // deselected CPU, skip the write
if (GBACart::CartInserted)