| 摘要 |
PURPOSE:To avoid the useless occupation of buses by collecting the timing information on each host device into a memory at the time of initialization and deciding the transmission timing of an interruption signal based on the collected timing information. CONSTITUTION:At the time of initialization of a system, a timing control means 15 of a disk control device 4 reads the information on the optimum timing accordance with each performance out of the host devices 1, 2 and 3 via a common bus 13 by an SCSI (small computer system interface) protocol and devices these information for each device number to record them into a memory 14. In the same way, the means 15 of disk control devices 5 and 6 record the timing information on devices 1-3 into the memory 14. Then the means 15 set the transmission timing of interruption signals to the devices 1-3 based on said timing information. Thus it is possible to avoid the useless occupation of the common bus. |
