// handle pre-saving by filling the blob
protected override void device_pre_save()
{
// remember the original blob size
var orig_size = m_save_blob.size();
// save the state
ymfm.ymfm_saved_state state = new ymfm.ymfm_saved_state(m_save_blob, true);
m_chip.save_restore(state);
// ensure that the size didn't change since we first allocated
if (m_save_blob.size() != orig_size)
{
throw new emu_fatalerror("State size changed for ymfm chip");
}
}
// handle device start
protected override void device_start()
{
// let our parent do its startup
base.device_start();
// allocate our stream
m_stream = m_disound.stream_alloc(0, OUTPUTS, m_chip.sample_rate(clock()));
// compute the size of the save buffer by doing an initial save
ymfm.ymfm_saved_state state = new ymfm.ymfm_saved_state(m_save_blob, true);
m_chip.save_restore(state);
// now register the blob for save, on the assumption the size won't change
save_item(NAME(new { m_save_blob }));
}
// save/restore
public void save_restore(ymfm_saved_state state)
{
throw new emu_unimplemented();
}
// handle post-loading by restoring from the blob
protected override void device_post_load()
{
// populate the state from the blob
ymfm.ymfm_saved_state state = new ymfm.ymfm_saved_state(m_save_blob, false);
m_chip.save_restore(state);
}