Genesis-Plus-GX/source/sound/sn76496.h
ekeeke31 217ca8de3f
2007-08-10 20:34:06 +00:00

39 lines
775 B
C

#ifndef SN76496_H
#define SN76496_H
#define MAX_76496 1
struct SN76496interface
{
int num;
int baseclock[MAX_76496];
int volume[MAX_76496];
};
struct SN76496
{
int SampleRate;
unsigned int UpdateStep;
int VolTable[16];
int Register[8];
int LastRegister;
int Volume[4];
unsigned int RNG;
int NoiseFB;
int Period[4];
int Count[4];
int Output[4];
};
extern struct SN76496 sn[MAX_76496];
/* Function prototypes */
void SN76496Write (int chip, int data);
void SN76496Update (int chip, signed short int *buffer, int length);
void SN76496_set_clock (int chip, int clock);
void SN76496_set_gain (int chip, int gain);
int SN76496_init (int chip, int clock, int volume, int sample_rate);
int SN76496_sh_start (int clock, int volume, int rate);
#endif