const int LENGTH = 256;
int32_t *array;

int prev;
int32_t mod[16];
int i;
int ctrig;
int ltrig;
int strig;

static int32_t _array[attr_poly][256] __attribute__((section(".sdram")));
array = &_array[parent->polyIndex][0];

// int32_t array[256];

if ((param_save > 0) && !strig) {
  strig = 1;
  FIL FileObject;
  FRESULT err;
  UINT bytes_written;
  err = f_open(&FileObject, inlet_filename, FA_WRITE | FA_CREATE_ALWAYS);
  if (err != FR_OK) {
    report_fatfs_error(err, "inlet_filename");
    return;
  }
  int rem_sz = sizeof(*array) * LENGTH;
  int offset = 0;
  while (rem_sz > 0) {
    if (rem_sz > sizeof(fbuff)) {
      memcpy((char *)fbuff, (char *)(&array[0]) + offset, sizeof(fbuff));
      err = f_write(&FileObject, fbuff, sizeof(fbuff), &bytes_written);
      rem_sz -= sizeof(fbuff);
      offset += sizeof(fbuff);
    } else {
      memcpy((char *)fbuff, (char *)(&array[0]) + offset, rem_sz);
      err = f_write(&FileObject, fbuff, rem_sz, &bytes_written);
      rem_sz = 0;
    }
  }
  if (err != FR_OK)
    report_fatfs_error(err, "inlet_filename");
  err = f_close(&FileObject);
  if (err != FR_OK)
    report_fatfs_error(err, "inlet_filename");
} else if (!(param_save > 0))
  strig = 0;

if ((param_load > 0) && !ltrig) {
  ltrig = 1;
  FIL FileObject;
  FRESULT err;
  UINT bytes_read;
  err = f_open(&FileObject, inlet_filename, FA_READ | FA_OPEN_EXISTING);
  if (err != FR_OK) {
    report_fatfs_error(err, inlet_filename);
    return;
  }
  int rem_sz = sizeof(*array) * LENGTH;
  int offset = 0;
  while (rem_sz > 0) {
    if (rem_sz > sizeof(fbuff)) {
      err = f_read(&FileObject, fbuff, sizeof(fbuff), &bytes_read);
      if (bytes_read == 0)
        break;
      memcpy((char *)(&array[0]) + offset, (char *)fbuff, bytes_read);
      rem_sz -= bytes_read;
      offset += bytes_read;
    } else {
      err = f_read(&FileObject, fbuff, rem_sz, &bytes_read);
      memcpy((char *)(&array[0]) + offset, (char *)fbuff, bytes_read);
      rem_sz = 0;
    }
  }
  if (err != FR_OK) {
    report_fatfs_error(err, inlet_filename);
    return;
  };
  err = f_close(&FileObject);
  if (err != FR_OK) {
    report_fatfs_error(err, inlet_filename);
    return;
  };
} else if (!(param_load > 0))
  ltrig = 0;

mod[0] = inlet_in1;
mod[1] = inlet_in2;
mod[2] = inlet_in3;
mod[3] = inlet_in4;
mod[4] = inlet_in5;
mod[5] = inlet_in6;
mod[6] = inlet_in7;
mod[7] = inlet_in8;
mod[8] = inlet_in9;
mod[9] = inlet_in10;
mod[10] = inlet_in11;
mod[11] = inlet_in12;
mod[12] = inlet_in13;
mod[13] = inlet_in14;
mod[14] = inlet_in15;
mod[15] = inlet_in16;
if ((param_clear > 0) && !ctrig) {
  ctrig = 1;
  for (i = 0; i < 256; i++) {
    array[i] = 0;
  }
} else if (param_clear == 0) {
  ctrig = 0;
}

// load setting
if (!(prev == (param_source + param_destiny + param_clear + param_load))) {
  PExParameterChange(&parent->PExch[PARAM_INDEX_attr_legal_name_gain],
                     array[param_source + param_destiny * 16], 0xFFFD);
}
prev = param_source + param_destiny + param_clear + param_load;

// save setting
array[param_source + param_destiny * 16] = param_gain;

outlet_o1 = 0;
for (i = 0; i < 16; i++) {
  outlet_o1 += ___SMMUL(array[i] << 3, mod[i] << 2);
}

outlet_o2 = 0;
for (i = 0; i < 16; i++) {
  outlet_o2 += ___SMMUL(array[i + 16] << 3, mod[i] << 2);
}

outlet_o3 = 0;
for (i = 0; i < 16; i++) {
  outlet_o3 += ___SMMUL(array[i + 32] << 3, mod[i] << 2);
}

outlet_o4 = 0;
for (i = 0; i < 16; i++) {
  outlet_o4 += ___SMMUL(array[i + 48] << 3, mod[i] << 2);
}

outlet_o5 = 0;
for (i = 0; i < 16; i++) {
  outlet_o5 += ___SMMUL(array[i + 64] << 3, mod[i] << 2);
}

outlet_o6 = 0;
for (i = 0; i < 16; i++) {
  outlet_o6 += ___SMMUL(array[i + 80] << 3, mod[i] << 2);
}

outlet_o7 = 0;
for (i = 0; i < 16; i++) {
  outlet_o7 += ___SMMUL(array[i + 96] << 3, mod[i] << 2);
}

outlet_o8 = 0;
for (i = 0; i < 16; i++) {
  outlet_o8 += ___SMMUL(array[i + 112] << 3, mod[i] << 2);
}

outlet_o9 = 0;
for (i = 0; i < 16; i++) {
  outlet_o9 += ___SMMUL(array[i + 128] << 3, mod[i] << 2);
}

outlet_o10 = 0;
for (i = 0; i < 16; i++) {
  outlet_o10 += ___SMMUL(array[i + 144] << 3, mod[i] << 2);
}

outlet_o11 = 0;
for (i = 0; i < 16; i++) {
  outlet_o11 += ___SMMUL(array[i + 160] << 3, mod[i] << 2);
}

outlet_o12 = 0;
for (i = 0; i < 16; i++) {
  outlet_o12 += ___SMMUL(array[i + 176] << 3, mod[i] << 2);
}

outlet_o13 = 0;
for (i = 0; i < 16; i++) {
  outlet_o13 += ___SMMUL(array[i + 192] << 3, mod[i] << 2);
}

outlet_o14 = 0;
for (i = 0; i < 16; i++) {
  outlet_o14 += ___SMMUL(array[i + 208] << 3, mod[i] << 2);
}

outlet_o15 = 0;
for (i = 0; i < 16; i++) {
  outlet_o15 += ___SMMUL(array[i + 224] << 3, mod[i] << 2);
}

outlet_o16 = 0;
for (i = 0; i < 16; i++) {
  outlet_o16 += ___SMMUL(array[i + 240] << 3, mod[i] << 2);
}