| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a debugging system which utilizes an actual device and records an input signal and input data from external equipment using a trace memory, and which reproduces the condition that the external equipment has been connected, in real time using data of the trace memory even if the external equipment is not connected. <P>SOLUTION: In a debugging system, an incircuit emulator 11 is provided with a data input means 15 which writes data read from I/O 3 of one or a plurality of specified addresses by a CPU 2 and its address in a trace memory 14 in a recording mode; and a data output means 17 which compares the address of data written in the trace memory 14 and an address bus output from the CPU 2, and which sequentially outputs the data in the trace memory 14 to the data bus if they are identical in a recovery mode. An evaluation chip 1 is provided with a bus switching means 4 which connects the data bus of the CPU 2 and the data output means 17 when the data output means 17 outputs the data. <P>COPYRIGHT: (C)2007,JPO&INPIT |
