MICROPROCESSOR DEVELOPMENT SYSTEM

摘要

A system for developing an MCU(Micro Control Unit) is provided to implement a debugging function without using any EVA(EVAluation) chip, process the debugging function implemented by the EVA chip with software by interrupt control, and apply for an integrated debugging device shared to a hardware and software developer. A program storing part(210) stores a user application program and an MDS(MCU Development System) program. An MDS controller(204) controls mode switchover from the user application program to the MDS program by an interrupt. An MDS mode setting part(202) receives host input from a host(230) and is connected to the MDS controller. If the real-time debugging function is requested during execution of the user application program, an MCU core(220) executes the MDS program by switching a program mode according to the MDS controller. The MDS controller includes an interrupt generator(208) generating the interrupt for stopping the user application program and an interrupt vector recorder(206) storing address information of an extended interrupt processing routine for processing the generated interrupt.