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93 lines
1.6 KiB
C++
93 lines
1.6 KiB
C++
#pragma once
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#include "Types.h"
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#include "INTC.h"
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#include "zip/ZipArchiveWriter.h"
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#include "zip/ZipArchiveReader.h"
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class CGSHandler;
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class CTimer
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{
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public:
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enum
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{
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MODE_CLOCK_SELECT = 0x003,
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MODE_CLOCK_SELECT_BUSCLOCK = 0x000,
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MODE_CLOCK_SELECT_BUSCLOCK16 = 0x001,
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MODE_CLOCK_SELECT_BUSCLOCK256 = 0x002,
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MODE_CLOCK_SELECT_EXTERNAL = 0x003,
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MODE_GATE_ENABLE = 0x004,
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MODE_GATE_SELECT = 0x008,
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MODE_GATE_SELECT_HBLANK = 0x000,
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MODE_GATE_SELECT_VBLANK = 0x008,
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MODE_GATE_MODE = 0x030,
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MODE_GATE_MODE_COUNTLOW = 0x000,
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MODE_GATE_MODE_HIGHEDGE = 0x010,
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MODE_GATE_MODE_LOWEDGE = 0x020,
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MODE_GATE_MODE_BOTHEDGE = 0x030,
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MODE_ZERO_RETURN = 0x040,
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MODE_COUNT_ENABLE = 0x080,
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MODE_EQUAL_INT_ENABLE = 0x100,
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MODE_OVERFLOW_INT_ENABLE = 0x200,
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MODE_EQUAL_FLAG = 0x400,
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MODE_OVERFLOW_FLAG = 0x800,
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};
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enum REGISTER
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{
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T1_COUNT = 0x10000800,
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T2_MODE = 0x10001010,
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T3_COUNT = 0x10001800,
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T3_MODE = 0x10001810,
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T3_COMP = 0x10001820,
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};
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CTimer(CINTC&, CGSHandler*&);
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virtual ~CTimer() = default;
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void Reset();
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void Count(unsigned int);
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uint32 GetRegister(uint32);
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void SetRegister(uint32, uint32);
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void LoadState(Framework::CZipArchiveReader&);
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void SaveState(Framework::CZipArchiveWriter&);
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void NotifyVBlankStart();
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void NotifyVBlankEnd();
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private:
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enum
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{
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MAX_TIMER = 4,
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};
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void DisassembleGet(uint32);
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void DisassembleSet(uint32, uint32);
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void ProcessGateEdgeChange(uint32, uint32);
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struct TIMER
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{
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uint32 nCOUNT;
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uint32 nMODE;
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uint32 nCOMP;
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uint32 nHOLD;
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uint32 clockRemain;
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};
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TIMER m_timer[MAX_TIMER];
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CINTC& m_intc;
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CGSHandler*& m_gs;
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};
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