ocr: pei_bts pei_toor parent children next self devices bus: = 0 pei_der pei_der pei_der bus bus bus sibling sibling sibling next next next PCI-ISA Bridge Vidleo PCI-PCI. Bridge pei_btts parent children next self devices bus= = 1 pei_der pei_der bus bus sibling sibling next next SCSI Erhether