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Merge pull request #25 from NovaSquirrel/master
Mapper updates
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| #pragma once | ||
| #include "stdafx.h" | ||
| #include "MMC3.h" | ||
|
|
||
| class MMC3_267 : public MMC3 | ||
| { | ||
| private: | ||
| uint8_t _outerBank = 0; | ||
|
|
||
| protected: | ||
| virtual uint16_t RegisterStartAddress() override { return 0x6000; } | ||
| virtual uint16_t RegisterEndAddress() override { return 0xFFFF; } | ||
|
|
||
| virtual void Reset(bool softreset) override | ||
| { | ||
| _outerBank = 0; | ||
| MMC3::UpdateState(); | ||
| } | ||
|
|
||
| virtual void StreamState(bool saving) override | ||
| { | ||
| MMC3::StreamState(saving); | ||
| Stream(_outerBank); | ||
| } | ||
|
|
||
| virtual void SelectCHRPage(uint16_t slot, uint16_t page, ChrMemoryType memoryType = ChrMemoryType::Default) override | ||
| { | ||
| page &= 0x7F; | ||
| page |= (((_outerBank >> 2) & 0x08) | (_outerBank & 0x06)) << 6; | ||
| MMC3::SelectCHRPage(slot, page, memoryType); | ||
| } | ||
|
|
||
| virtual void SelectPRGPage(uint16_t slot, uint16_t page, PrgMemoryType memoryType = PrgMemoryType::PrgRom) override | ||
| { | ||
| page &= 0x1F; | ||
| page |= (((_outerBank >> 2) & 0x08) | (_outerBank & 0x06)) << 4; | ||
| MMC3::SelectPRGPage(slot, page, memoryType); | ||
| } | ||
|
|
||
| void WriteRegister(uint16_t addr, uint8_t value) override | ||
| { | ||
| if(addr < 0x8000) { | ||
| if(!(_outerBank & 0x80)) { | ||
| _outerBank = value; | ||
| MMC3::UpdatePrgMapping(); | ||
| MMC3::UpdateChrMapping(); | ||
| } | ||
| } else { | ||
| MMC3::WriteRegister(addr, value); | ||
| } | ||
| } | ||
| }; |
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