| 摘要 |
PURPOSE:To judge a device generating a fault easily by displaying the stop of the repeated generation of an I/O instruction on the basis of the number of times of information informed from an I/O device when an OS generates the I/O instruction. CONSTITUTION:A CPU1 informs an I/O instruction generated on the basis of an instruction from the OS to a channel to execute the control or the like of I/O devices 2-1, 2-2. The CPU1 is provided with counters 3, 4 and display devices 5, 6 for displaying the contents of counters 3, 4 under control by the OS in addition to the I/O devices 2-1, 2-2. At the generation of the I/O instruction from the OS to the I/O devices 2-1, 2-2, the stop of the repeated generation of the I/O instruction is displayed on display devices 5, 6. |
