SYNCHRONIZING SYSTEM FOR COMMON DATA IN MULTI-PROCESSOR SYSTEM

PURPOSE:To make the state display of all processors the same by transferring the contents of memory to a corresponding processor by a main processor when the plural other processors request the memory of the main processor and updating a state display memory. CONSTITUTION:The state display request part 112 of the processor 11 is cyclically activated and the request code of state display data is transferred to the main processor 10. When the processor 10 detects this code, it activates a data request processing part 102, reads the state display memory 101 and inputs to a channel control part 114. The state display request part 112 receiving this data feeds a signal to a state display memory 111 and writes the received data in the state display memory 111. Thereby, the contents of the state display memory of the processors 10, 11 coincide.