| 摘要 |
PURPOSE:To efficiently execute a program debugging by using a debug memory giving a program running number of times. CONSTITUTION:A control circuit 8 brings a system to a debug mode. The address of the debug memory 7 is set to a counter 2. At every time an address is revised, the data read from the debug memory 7 is incremented by 1 by an increment circuit 9 and a data is written again in the buffer debug memory 7. After the end of debugging, when the control circuit 8 sets the system to the read mode, a read/write address switching circuit 6 selects a read address counter 5. In setting the address of the debug memory 7, the content of the memory 7 is read. The output from the debug memory 7 indicates how many times the program runs the address. |
