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