func: void ide_data_writew(void *opaque, uint32_t addr, uint32_t val)
  
  {
  
      IDEBus *bus = opaque;
  
      IDEState *s = idebus_active_if(bus);
  
      uint8_t *p;
  
  
  
      /* PIO data access allowed only when DRQ bit is set */
  
      if (!(s->status & DRQ_STAT))
  
          return;
  
  
  
      p = s->data_ptr;
  
      *(uint16_t *)p = le16_to_cpu(val);
  
      p += 2;
  
      s->data_ptr = p;
  
      if (p >= s->data_end)
  
          s->end_transfer_func(s);
  
  }
  