2014-06-14 15:27:55 +00:00
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#include "stdafx.h"
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#include "PPU.h"
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PPU::PPU()
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{
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_state = {};
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_state.Status |= 0xFF;
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}
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uint8_t PPU::MemoryRead(uint16_t addr)
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{
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switch(GetRegisterID(addr)) {
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case PPURegisters::Control:
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return (uint8_t)_state.Control;
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case PPURegisters::Control2:
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return (uint8_t)(_state.Control >> 8);
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case PPURegisters::Status:
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return _state.Status;
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case PPURegisters::SpriteData:
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return _spriteRAM[_state.SpriteRamAddr];
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case PPURegisters::VideoMemoryData:
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return _videoRAM[_state.VideoRamAddr];
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}
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return 0;
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}
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void PPU::MemoryWrite(uint16_t addr, uint8_t value)
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{
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}
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