furnace/src/engine/platform/ym2610Interface.cpp

/**
 * Furnace Tracker - multi-system chiptune tracker
 * Copyright (C) 2021-2022 tildearrow and contributors
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "sound/ymfm/ymfm.h"
#include "ym2610.h"
#include "../engine.h"

uint8_t DivYM2610Interface::ymfm_external_read(ymfm::access_class type, uint32_t address) {
  switch (type) {
    case ymfm::ACCESS_ADPCM_A:
      if (parent->adpcmAMem==NULL) return 0;
      if ((address&0xffffff)>=parent->adpcmAMemLen) return 0;
      return parent->adpcmAMem[address&0xffffff];
    case ymfm::ACCESS_ADPCM_B:
      if (parent->adpcmBMem==NULL) return 0;
      if ((address&0xffffff)>=parent->adpcmBMemLen) return 0;
      return parent->adpcmBMem[address&0xffffff];
    default:
      return 0;
  }
  return 0;
}

void DivYM2610Interface::ymfm_external_write(ymfm::access_class type, uint32_t address, uint8_t data) {
}