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