| 摘要 |
PURPOSE:To prevent a frame from being destructed, to prevent a bus from being disabled and to prevent a processor generating a fault from exerting bad influence upon another processor by by-passing the defective processor. CONSTITUTION:The contents of a frame received from a bus 4 are read out by a receiving frame reading circuit 5. When a transmitting/receiving circuit part 6 decides that the frame is not allocated to its own circuit, the contents of the frame is read out by a transmitting frame reading circuit 7 and a comparator 8 compares the frame read out by the circuit 5 with that read out by the circuit 7 to decide whether both the frames are the same or not. When the frames are different as the result of comparison, the comparator 8 stops the transmission of the frame and commands a by-pass control circuit 9 to by-pass the succeeding received frame by a by-pass 10. Thereby, the frame received from the bus afterthere is transmitted to the bus 4 through the by-pass 10. Consequently, the bus can be prevented from being disabled or the generation of bad influence upon another processor can be prevented. |
