hard_drive = {
  0 = {
    drive0 = {
      buffer = drive0.buffer
      status = {
        busy = false
        drive_ready = true
        write_fault = false
        seek_complete = true
        drq = false
        corrected_data = false
        index_pulse = false
        index_pulse_count = 9
        err = false
      }
      error_register = 0x00
      head_no = 0x00
      sector_count = 0x03
      sector_no = 0x00
      cylinder_no = 0x4000
      buffer_size = 0x00000800
      buffer_index = 0x00000800
      drq_index = 0x00000000
      current_command = 0xa0
      multiple_sectors = 0x00
      lba_mode = 0x00
      packet_dma = 0x00000000
      control_reset = false
      control_disable_irq = false
      reset_in_progress = 0x00
      features = 0x00
      mdma_mode = 0x00
      udma_mode = 0x00
      hob_feature = 0x00
      hob_nsector = 0x03
      hob_sector = 0x00
      hob_lcyl = 0x00
      hob_hcyl = 0x40
      num_sectors = 0x00000000
      cdrom_locked = false
    }
    drive_select = 1
  }
  1 = {
    drive_select = 0
  }
  2 = {
    drive_select = 0
  }
  3 = {
    drive_select = 0
  }
}