The Design And Implementation Of The Embedded System Based On Intel386ex Microprocessor

With the rapid development of computer industry, embedded computer is becoming the tendency of computer industry research. There are embedded applications that seek to achieve quick time-to-market by using the personal computer-based development environment. This paper provides an embedded application with operation system and documents management on it. This embedded system is based on Intel386ex,a professional embedded microprocessor. And, the embedded system is designed as a PC/DOS-compatible platform so that many excellent software and hardware resources existed on PC can be transplanted directly. As an example of the application of such an embedded system, this paper provides a case of multi-asynchronous-serial server.The design and implementation of hardware, software and application of the embedded system is the core of this paper. In aspect of hardware, the technology of CPLD based on EDA achieves the of embedded system. In aspect of software, the use of BIOS accomplishes the compatibility of PC/DOS, especially, much works have been made to implement standard output service with LCD instead of VGA on PC. In aspect of application, the paper focuses on how to construct an application on such an embedded system.The final part of this paper summarizes the performance of theembedded system, and discusses some new methods for improvement.