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In order to solve the problems such as the difficulty in building a full physical platform development environment and the difficulty in testing and maintenance, a super real-time virtual simulation platform with the functions of fault simulation and injection, collaborative simulation and modular programming is completed by adopting the design idea of digital twin technology based on the research of real-time embedded development of PowerPC processor; A design and implementation method of all digital simulation system is proposed. Based on digital twin technology, the processor and peripheral devices on the hardware motherboard are virtualized and integrated into the digital model; The models cooperate with each other to control the communication between the CPU control external devices and the dynamic model and other devices, as well as data receiving and sending, memory reading and writing, serial port output and other behaviors, and finally achieve the same functions as the physical devices. In addition, the method of combining the virtual and the real is used to verify the accuracy of the running results, accelerate the software execution efficiency, facilitate rapid and comprehensive system development and testing, so as to better apply to various fields.