User:Aryan14313/sandbox

cpu-iop communication
-the communication between cpu and iop may take different forms depending on the particular computer considered. in most cases the memory unit acts as a message center where each processor leaves information for the other. To appreciate the operation of a typical iop communicate. This is a simplified example that omits many operating details in order to provide an overview of basic concepts. the sequence of operations may be carried out as shown in the flowchart of fig. the cpu sends an instructions to test the iop path. the iop responds by inserting a states word in memory for the cpu to check.