auto HitachiDSP::firmware() const -> vector<uint8> {
  vector<uint8> buffer;
  if(!cartridge.has.HitachiDSP) return buffer;
  buffer.reserve(1024 * 3);
  for(auto n : range(1024)) {
    buffer.append(dataROM[n] >>  0);
    buffer.append(dataROM[n] >>  8);
    buffer.append(dataROM[n] >> 16);
  }
  return buffer;
}

auto HitachiDSP::serialize(serializer& s) -> void {
  HG51B::serialize(s);
  Thread::serialize(s);

  s.integer(mmio.dma);
  s.integer(mmio.dmaSource);
  s.integer(mmio.dmaLength);
  s.integer(mmio.dmaTarget);
  s.integer(mmio.r1f48);
  s.integer(mmio.programOffset);
  s.integer(mmio.r1f4c);
  s.integer(mmio.pageNumber);
  s.integer(mmio.programCounter);
  s.integer(mmio.r1f50);
  s.integer(mmio.r1f51);
  s.integer(mmio.r1f52);
  s.array(mmio.vector);
}