86Box/src/include/86box/snd_ym7128.h

#ifndef SOUND_YM7128_H
#define SOUND_YM7128_H

typedef struct ym7128_t {
    int     a0, sci;
    uint8_t dat;

    int     reg_sel;
    uint8_t regs[32];

    int gl[8], gr[8];
    int vm, vc, vl, vr;
    int c0, c1;
    int t[9];

    int16_t filter_dat;
    int16_t prev_l, prev_r;

    int16_t delay_buffer[2400];
    int     delay_pos;

    int16_t last_samp;
} ym7128_t;

void ym7128_init(ym7128_t *ym7128);
void ym7128_write(ym7128_t *ym7128, uint8_t val);
void ym7128_apply(ym7128_t *ym7128, int16_t *buffer, int len);

#endif /*SOUND_YM7128_H*/