79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
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//////////////////////////////////////////////////////////////////////////
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// //
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// Konami VRC6 //
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// Norix //
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// written 2001/09/18 //
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// last modify ----/--/-- //
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//////////////////////////////////////////////////////////////////////////
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#ifndef __APU_VRC6_INCLUDED__
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#define __APU_VRC6_INCLUDED__
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#define WIN32_LEAN_AND_MEAN
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#include "windows.h"
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#include "typedef.h"
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#include "macro.h"
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#include "APU_INTERFACE.h"
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class APU_VRC6 : public APU_INTERFACE
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{
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public:
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APU_VRC6();
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~APU_VRC6();
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void Reset( FLOAT fClock, INT nRate );
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void Setup( FLOAT fClock, INT nRate );
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void Write( WORD addr, BYTE data );
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INT Process( INT channel );
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INT GetFreq( INT channel );
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INT GetStateSize();
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void SaveState( LPBYTE p );
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void LoadState( LPBYTE p );
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protected:
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typedef struct {
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BYTE reg[3];
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BYTE enable;
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BYTE gate;
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BYTE volume;
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INT phaseacc;
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INT freq;
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INT output_vol;
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BYTE adder;
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BYTE duty_pos;
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} RECTANGLE, *LPRECTANGLE;
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typedef struct {
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BYTE reg[3];
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BYTE enable;
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BYTE volume;
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INT phaseacc;
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INT freq;
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INT output_vol;
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BYTE adder;
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BYTE accum;
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BYTE phaseaccum;
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} SAWTOOTH, *LPSAWTOOTH;
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INT RectangleRender( RECTANGLE& ch );
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INT SawtoothRender( SAWTOOTH& ch );
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RECTANGLE ch0, ch1;
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SAWTOOTH ch2;
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INT cycle_rate;
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FLOAT cpu_clock;
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private:
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};
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#endif // !__APU_VRC6_INCLUDED__
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