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Finishing the common bus for all modes

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This commit is contained in:
AnonymusRaccoon
2020-01-28 17:44:16 +01:00
parent dd002759ca
commit 2bcd046f78
2 changed files with 12 additions and 9 deletions
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19
sources/Memory/MemoryBus.cpp
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@@ -48,12 +48,14 @@ namespace ComSquare
void MemoryBus::_mirrorComponents(SNES &console, int i)
{
this->_memoryAccessors.push_back(Memory::MemoryShadow::createShadow(console.wram, i, i + 0x2000));
this->_memoryAccessors.push_back(Memory::MemoryShadow::createShadow(console.ppu, i + 0x2100, i + 0x2140));
this->_memoryAccessors.push_back(Memory::MemoryShadow::createShadow(console.apu, i + 0x2140, i + 0x2144));
this->_memoryAccessors.push_back(Memory::MemoryShadow::createShadow(console.cpu, i + 0x4200, i + 0x4220));
}
void MemoryBus::mapComponents(SNES &console)
{
// The WRam is always mapped in the bank 7E and 7F, no matter the memory mapping mode.
// The WRam and PU registers are always mapped at the same address no matter the mapping mode.
console.wram->setMemoryRegion(0x7E0000, 0x7FFFFF);
this->_memoryAccessors.push_back(console.wram);
@@ -67,14 +69,15 @@ namespace ComSquare
this->_memoryAccessors.push_back(console.cpu);
// TODO implement DMA & HDMA (4220 to 4300)
// TODO implement Joys.
//Mirror the first $2000 bits of the WRam to all banks of the Q1 & Q3.
for (uint24_t i = 0; i < 0x400000; i += 0x10000) {
// Map to the quarter 1.
for (uint24_t i = 0; i < 0x400000; i += 0x10000)
this->_mirrorComponents(console, i);
}
for (uint24_t i = 0x800000; i < 0xC00000; i += 0x10000) {
this->_memoryAccessors.push_back(Memory::MemoryShadow::createShadow(console.wram, i, i + 0x2000));
this->_memoryAccessors.push_back(Memory::MemoryShadow::createShadow(console.cpu, i + 0x4200, i + 0x4220));
}
// Map to the quarter 3.
for (uint24_t i = 0x800000; i < 0xC00000; i += 0x10000)
this->_mirrorComponents(console, i);
// TODO should map sram, cartridge etc via the mapping mode of the cartridge.
}
}