| 摘要 |
PURPOSE:To switch all interfaces following one bus control part generating a fault to the normal signal bus system side so as to continue processing in a computer constituted of plural pairs of working and stand-by I/O interface parts connected from a buses to plural I/O parts in the working state of the whole signal bus system. CONSTITUTION:A system connecting a centeral control part 1 to I/O parts 13, 14 is duplexed and a pair of buses 5, 6, a pair of bus system control parts 3, 4 and plural working and stand-by I/O interface parts 9, 10 are provided. In addition, a pair of working and stand-by switching lines 12a, 12b for switching the interface parts 9, 10 and a pair of abnormality informing lines 7, 8 for informing the abnormality of the control parts 3, 4 are also included. If either one of the control parts 3, 4 generates abnormality, the abnormality informing line is changed from '0' to '1' and the interface parts 9 or 10 following the abnormal control part are immediately switched to the normal bus system control part side. |
