| 摘要 |
PURPOSE:To facilitate operation analysis of a faulty device by selecting a specific device to apply event recording and applying event recording in a timing proper to a recorded event. CONSTITUTION:When a channel for event recording is designated from a service processor 13 or a microprocessor 20, an event applying event recording is selected by the low-order 4-bit of a control word in a register 3 and the result is outputted via a signal line 17. On the other hand, a trigger generating condition is selected by the high-order 2-bit of the control word in the register 3 and the circuit 12 generates a trigger signal and outputs it in the corresponding timing. A register 15 corresponding to the channel is made enable by using a trigger signal and a channel selection signal obtained by encoding the value of a register 21 and after the signal of the event sent via the signal line 17 is latched to the register 15, the result is stored in an event recording area of a storage device 19 via the signal line 18. |
