| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an emulator capable of determining a number of break points on a program, and changing the break points determined on the program in a short time in examining the operation of an evaluated controller. <P>SOLUTION: A microcomputer for evaluation 13 emulates the operation of the evaluated controller by allowing CPU 16 to execute the program stored in ROM 17. Here, a most significant bit 17a of ROM 17 is designated as a bit for stopping, and the most significant bit 17a of an address where the determination of break point is desired, is set. In a case when the most significant bit 17a of the address is set when CPU 16 accesses ROM 17, a Halt signal is given to CPU 16, thus CPU 16 is stopped at the address. Whereby the program can be properly debugged by monitoring a condition of the microcomputer for evaluation 13 in a state that CPU 16 is stopped. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
