| 摘要 |
PURPOSE:To manage a bus with any simple method at a system for performing synchronous communication between plural nodes connected to the bus. CONSTITUTION:A bus managing node is provided with a use channel register REG 1 and a bus capacity register REG 2. Before starting the synchronous communication, each node recognizes the number of a non-used channel and the remaining capacity of the bus by transmitting a reading instruction to the use channel register REG 1 and the bus capacity register REG 2 and readin those contents. When there is the non-used channel and there is the remaining capacity in the bus, a writing instruction is transmitted to the use channel register REG 1 and the remaining capacity register REG 2 so that the number of the channel to be used and the capacity of the bus to be used can be respectively stored in these registers. |
