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Merge pull request #115 from negativeExponent/mesenx
mappers
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| #pragma once | ||
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| #include "stdafx.h" | ||
| #include "MMC3.h" | ||
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| class MMC3_455: public MMC3 | ||
| { | ||
| private: | ||
| uint8_t _exRegs[2]; | ||
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| protected: | ||
| void InitMapper() override | ||
| { | ||
| _exRegs[0] = 0; | ||
| _exRegs[1] = 1; | ||
|
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| AddRegisterRange(0x4100, 0x5FFF, MemoryOperation::Write); | ||
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| MMC3::InitMapper(); | ||
| MMC3::WriteRegister(0xA001, 0x80); | ||
| } | ||
|
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| void Reset(bool softReset) override | ||
| { | ||
| _exRegs[0] = 0; | ||
| _exRegs[1] = 1; | ||
|
|
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| MMC3::UpdateState(); | ||
| } | ||
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|
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| void SelectCHRPage(uint16_t slot, uint16_t page, ChrMemoryType memoryType = ChrMemoryType::Default) override | ||
| { | ||
| uint16_t base = (((_exRegs[1] >> 2) & 0x10) | ((_exRegs[0] << 1) & 0x08) | ((_exRegs[1] >> 2) & 0x07)) << 4; | ||
| uint16_t mask = 0xFF >> !(_exRegs[0] & 0x02); | ||
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| MMC3::SelectCHRPage(slot, (base & ~mask) | (page & mask)); | ||
| } | ||
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| void SelectPRGPage(uint16_t slot, uint16_t page, PrgMemoryType memoryType = PrgMemoryType::PrgRom) override | ||
| { | ||
| uint16_t base = (((_exRegs[1] >> 2) & 0x10) | ((_exRegs[0] << 1) & 0x08) | ((_exRegs[1] >> 2) & 0x07)) << 1; | ||
| uint16_t mask = 0x1F >> !(_exRegs[0] & 0x01); | ||
|
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| if(_exRegs[1] & 0x01) { | ||
| uint8_t nrom = _exRegs[1] & 0x02; | ||
| base = (slot & 0x02) ? (base | nrom) : (base & ~nrom); | ||
| mask = 0x01; | ||
| page = slot & 0x01; | ||
| } | ||
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| MMC3::SelectPRGPage(slot, (base & ~mask) | (page & mask)); | ||
| } | ||
|
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| void WriteRegister(uint16_t addr, uint8_t value) override | ||
| { | ||
| if(addr < 0x8000) { | ||
| if((GetState().RegA001 & 0x80) && (addr & 0x100)) { | ||
| _exRegs[0] = (addr & 0xFF); | ||
| _exRegs[1] = value; | ||
| MMC3::UpdatePrgMapping(); | ||
| MMC3::UpdateChrMapping(); | ||
| } | ||
| } else { | ||
| MMC3::WriteRegister(addr, value); | ||
| } | ||
| } | ||
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| void StreamState(bool saving) override | ||
| { | ||
| MMC3::StreamState(saving); | ||
| Stream(_exRegs[0], _exRegs[1]); | ||
| } | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| #pragma once | ||
|
|
||
| #include "stdafx.h" | ||
| #include "MMC3.h" | ||
|
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| class MMC3_456: public MMC3 | ||
| { | ||
| private: | ||
| uint8_t _outerBank; | ||
|
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| protected: | ||
| void InitMapper() override | ||
| { | ||
| _outerBank = 0; | ||
|
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| AddRegisterRange(0x4100, 0x5FFF, MemoryOperation::Write); | ||
|
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| MMC3::InitMapper(); | ||
| } | ||
|
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| void Reset(bool softReset) override | ||
| { | ||
| _outerBank = 0; | ||
|
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| MMC3::UpdateState(); | ||
| } | ||
|
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|
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| void SelectCHRPage(uint16_t slot, uint16_t page, ChrMemoryType memoryType = ChrMemoryType::Default) override | ||
| { | ||
| MMC3::SelectCHRPage(slot, (_outerBank << 7) | (page & 0x7F)); | ||
| } | ||
|
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| void SelectPRGPage(uint16_t slot, uint16_t page, PrgMemoryType memoryType = PrgMemoryType::PrgRom) override | ||
| { | ||
| MMC3::SelectPRGPage(slot, (_outerBank << 4) | (page & 0x0F)); | ||
| } | ||
|
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| void WriteRegister(uint16_t addr, uint8_t value) override | ||
| { | ||
| if(addr < 0x8000) { | ||
| if(CanWriteToWorkRam()) { | ||
| _outerBank = value; | ||
| MMC3::UpdatePrgMapping(); | ||
| MMC3::UpdateChrMapping(); | ||
| } | ||
| } else { | ||
| MMC3::WriteRegister(addr, value); | ||
| } | ||
| } | ||
|
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| void StreamState(bool saving) override | ||
| { | ||
| MMC3::StreamState(saving); | ||
| Stream(_outerBank); | ||
| } | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| #pragma once | ||
|
|
||
| #include "stdafx.h" | ||
| #include "MMC3.h" | ||
|
|
||
| class MMC3_457: public MMC3 | ||
| { | ||
| private: | ||
| uint8_t _outerBank; | ||
|
|
||
| protected: | ||
| void InitMapper() override | ||
| { | ||
| _outerBank = 0; | ||
|
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| AddRegisterRange(0x6000, 0x7FFF, MemoryOperation::Write); | ||
|
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| MMC3::InitMapper(); | ||
| } | ||
|
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| void Reset(bool softReset) override | ||
| { | ||
| _outerBank = 0; | ||
|
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| MMC3::UpdateState(); | ||
| } | ||
|
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||
|
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| void SelectCHRPage(uint16_t slot, uint16_t page, ChrMemoryType memoryType = ChrMemoryType::Default) override | ||
| { | ||
| uint8_t mask = 0xFF >> !(_outerBank & 0x08); | ||
| MMC3::SelectCHRPage(slot, ((_outerBank << 7) & ~mask) | (page & mask)); | ||
| } | ||
|
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| void SelectPRGPage(uint16_t slot, uint16_t page, PrgMemoryType memoryType = PrgMemoryType::PrgRom) override | ||
| { | ||
| uint8_t mask = 0x1F >> !(_outerBank & 0x08); | ||
| MMC3::SelectPRGPage(slot, ((_outerBank << 4) & ~mask) | (page & mask)); | ||
| } | ||
|
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| void WriteRegister(uint16_t addr, uint8_t value) override | ||
| { | ||
| if(addr < 0x8000) { | ||
| WritePrgRam(addr, value); | ||
| if(CanWriteToWorkRam()) { | ||
| _outerBank = value; | ||
| MMC3::UpdatePrgMapping(); | ||
| MMC3::UpdateChrMapping(); | ||
| } | ||
| } else { | ||
| MMC3::WriteRegister(addr, value); | ||
| } | ||
| } | ||
|
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| void StreamState(bool saving) override | ||
| { | ||
| MMC3::StreamState(saving); | ||
| Stream(_outerBank); | ||
| } | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| #pragma once | ||
| #include "MMC3.h" | ||
|
|
||
| class MMC3_458 : public MMC3 | ||
| { | ||
| private: | ||
| uint8_t _exReg; | ||
|
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| protected: | ||
| uint32_t GetDipSwitchCount() override { return 2; } | ||
| bool AllowRegisterRead() override { return true; } | ||
|
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| void InitMapper() override | ||
| { | ||
| _exReg = 0; | ||
| MMC3::InitMapper(); | ||
|
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| AddRegisterRange(0x6000, 0x7FFF, MemoryOperation::Write); | ||
| } | ||
|
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| void Reset(bool softReset) override | ||
| { | ||
| _exReg = 0; | ||
|
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| MMC3::UpdateState(); | ||
| } | ||
|
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| void SelectCHRPage(uint16_t slot, uint16_t page, ChrMemoryType memoryType = ChrMemoryType::Default) override | ||
| { | ||
| MMC3::SelectCHRPage(slot, ((_exReg << 4) & ~0x7F) | (page & 0x7F)); | ||
| } | ||
|
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| void SelectPRGPage(uint16_t slot, uint16_t page, PrgMemoryType memoryType = PrgMemoryType::PrgRom) override | ||
| { | ||
| uint16_t base = _exReg & 0x0F; | ||
| uint16_t nrom = (_romInfo.SubMapperID == 1) ? ((_exReg & 0x02) >> 3) : ((_exReg & 0x10) >> 4); | ||
|
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| page = (slot & 1); | ||
| page |= ((slot & 0x02) ? (base | nrom) : (base & ~nrom)) << 1; | ||
|
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| MMC3::SelectPRGPage(slot, page); | ||
| } | ||
|
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| uint8_t ReadRegister(uint16_t addr) override | ||
| { | ||
| uint8_t dipValue = GetDipSwitches() & 0x03; | ||
|
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| if((_exReg & 0x20) && dipValue) { | ||
| addr = (addr & ~0x03) | dipValue; | ||
| } | ||
|
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| return InternalReadRam(addr); | ||
| } | ||
|
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| void WriteRegister(uint16_t addr, uint8_t value) override | ||
| { | ||
| if(addr < 0x8000) { | ||
| _exReg = addr & 0xFF; | ||
| MMC3::UpdatePrgMapping(); | ||
| MMC3::UpdateChrMapping(); | ||
| } else { | ||
| MMC3::WriteRegister(addr, value); | ||
| } | ||
| } | ||
|
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| void StreamState(bool saving) override | ||
| { | ||
| MMC3::StreamState(saving); | ||
| Stream(_exReg); | ||
| } | ||
| }; |
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