| 摘要 |
<p>PURPOSE:To suppress the generation of processing contradiction in a status transmitting source by monitoring status information, forming its parity, compar ing the formed parity with a status parity signal, and forming an individual cancel signal if unequal comparison occurs. CONSTITUTION:A parity forming circuit 9 inputs the status information (excluding a status parity) of a status bus from the output 16-1' or 16-q' of a bus receiver 16-1 or 16-q synchronously with an STVLD signal, forms a parity signal and outputs the formed parity signal to a comparator 10 through an output line 9-1. On the other hand, the comparator 10 inputs also a status parity signal in a status bus and compares both the parity signals. The output 10-1 of the comparator 10 is supplied to respective cancel signal forming circuits 12-1 and 12-n.</p> |
