| 摘要 |
PURPOSE:To realize the transfer of data between processors via a common bus by transferring the numbers of both a communication transmitter processor and a communication receiver processor to a bus control device connected to the latter processor by an inter-processor transfer instruction. CONSTITUTION:A processor 200 gives an inter-processor communication instruction including the number of a communication receiver processor to a bus control device 210. The device 210 outputs the received inter-processor communication instruction to a common bus 300 via an address signal line 301 together with the information including the number of its own processor serving as a communications processor via a data signal line 302 respectively with control given to a control signal line 303. A bus control device 110 inputs the address information on the line 301 to an address control circuit 123. The circuit 123 decides the inter-processor communication against its own processor from comparison with its own processor number held by a register and informs an inter- processor communication request signal to a control circuit 124. In such a way, data can be transferred to a processor 100 from a processor 200. |
