| 摘要 |
PURPOSE:To take a synchronization between each mode, and to switch the mode in the relation of master/slave, by providing a circuit for arbitrating a state detecting signal of each processor emulator, and switching an emulation mode to a debug mode by its output. CONSTITUTION:Processor emulators 1, 3 for a plural processor built-in type microcomputer are connected through an emulator control part 2 and an arbitrating circuit 16. Outputs of state detecting circuits 5a, 5b are inputted to the circuit 16, and its outputs 18a, 18b are inputted to the respective emulation control parts 7a, 7b. The circuit 16 takes AND of state detecting signals 17a, 17b and outputs it to the control parts 7a, 7b. Only in case when emulation parts 6a, 6b have become equal to a condition which has been set in advance to the circuits 5a, 5b, each emulator 1, 3 shifts to a debug mode. The emulator 3 can be switched singly to the debug mode in its own emulation state. |
