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SourMesen
e391fd8f9a
* Code: Add auto-formatting rules for C++ projects (clang-format) and enforce code style via "clang-format" and "dotnet format" * fix ui format warnings
52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
#include "pch.h"
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#include "SMS/SmsBiosMapper.h"
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#include "SMS/SmsMemoryManager.h"
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#include "Utilities/Serializer.h"
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SmsBiosMapper::SmsBiosMapper(SmsMemoryManager* memoryManager)
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{
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_memoryManager = memoryManager;
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}
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void SmsBiosMapper::WriteRegister(uint16_t addr, uint8_t value)
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{
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switch(addr) {
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case 0xFFFD:
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_prgBanks[0] = value;
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_memoryManager->RefreshMappings();
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break;
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case 0xFFFE:
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_prgBanks[1] = value;
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_memoryManager->RefreshMappings();
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break;
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case 0xFFFF:
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_prgBanks[2] = value;
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_memoryManager->RefreshMappings();
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break;
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}
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}
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void SmsBiosMapper::RefreshMappings(bool cartridgeEnabled)
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{
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_memoryManager->MapRegisters(0xFFFD, 0xFFFF, SmsRegisterAccess::Write);
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if(!cartridgeEnabled) {
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_memoryManager->Map(0x0000, 0x3FFF, MemoryType::SmsBootRom, _prgBanks[0] * 0x4000, true);
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}
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//First 1kb is fixed?
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_memoryManager->Map(0x0000, 0x03FF, MemoryType::SmsBootRom, 0, true);
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if(!cartridgeEnabled) {
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_memoryManager->Map(0x4000, 0x7FFF, MemoryType::SmsBootRom, _prgBanks[1] * 0x4000, true);
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_memoryManager->Map(0x8000, 0xBFFF, MemoryType::SmsBootRom, _prgBanks[2] * 0x4000, true);
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}
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}
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void SmsBiosMapper::Serialize(Serializer& s)
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{
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SVArray(_prgBanks, 3);
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}
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