Patent attributes
A single-chip microcomputer includes a logic circuit, a CPU and a flip-flop for synchronizing an interrupt-request signal, which is supplied by the logic circuit to the CPU, based on a clock signal. A multi-chip emulation apparatus comprises a peripheral evaluation chip, a CPU evaluation chip and a device, which are used for emulating functions of the logic circuit, the CPU and the flip-flop respectively. When the multi-chip emulation apparatus is used for emulating functions of the single-chip microcomputer in the development, the device for emulating functions of the flip-flop synchronizes the interrupt-request signal to absorb a delay time incurred by the interrupt-request signal due to a physical distance between the peripheral evaluation chip and the CPU evaluation chip so that an interrupt-handling timing in the emulation matches an interrupt-handling timing in the real operation of the single-chip microcomputer.
