This paper presents the design and implementation of four C40 based parallel processing system. It is comprised of four single CPU ISA-bus board. All four C40s are fully connected together through comports. The supporting software presently include basic tools such as simulator, assembler, linker, C compiler, parallel run-time support library. Four CPU debug/monit software was also developed to ease programming . As example, parallel FFT has been implemented using the system. Under the control of an IBM-PC, the system peak performance is 200MFLOPS and can be further expanded. It is suitable for radar , sonar , image signal processing.
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