| 摘要 |
PURPOSE:To accumulate and record data in an external storage device when a memory is full of recorded memory for trace, by providing the memory for trace having two faces at least for recording trace data of a program in an information processing device. CONSTITUTION:Trace data from an information processing device 10 is matched by a controlling circuit 21 of an accumulating and recording device 20 and is sent to a controlling circuit 23 for memory banks for trace, and, for example, a bank 22a of a memory 22 for trace having two faces is selected, and trace data is recorded in this bank 22a. When the bank 22a is filled up with data, the circuit 23 switches the bank 22a to a bank 22b and requests a controlling circuit 25 to output trace data to a storage device 24 and reports the bank 22a to be connected to the device 24 to a controlling circuit 26. The circuit 25 transfers trace data to the device 24 to accumulate and record it. During this accumulating and recording, trace data from the device 10 is recorded in the bank which is not connected to the circuit 25. |
