Design And Implementation Of VLIW Microprocessor Based On FPGA

In the two decades since FPGAs were introduced, the way which digital logic is designed and deployed has been radically changed. By marrying the high performance of ASICs and the flexibility of microprocessors, FPGAs have made possible entirely new types of applications. It is very important to design microprocessor as the part of core of electronic systems, so development and production. On making use of the technology of FPGA to design the microprocessor of logic function, it can quickly realize the function, complete design, cut down development cycle, save cost and quickly realize productions.The subject of the paper is designed VLIW (is the abbreviation of "very long instruction word") microprocessor based on FPGA. It designs VLIW microprocessor which contains 64-bit instruction word and 192-bit data, each VLIW instruction word consists of three operations in parallel. The VLIW microprocessor can be designed using a pipeline technology of four stages, and have been implemented VLIW microprocessor's core and completed the basic function by taking advantage of the technology of FPGAs. According to the basic principle of VLIW microprocessor, it is rationally divided into five main modules. Such as fetch module, decode module, register file, execute module, writeback module. Each main module is reasonably divided again, and realized the function of every module based on the principle of FPGAs, so as to implement five main modules. At last, the whole function of VLIW microprocessor is completely finished. It completes the data of empty operation, addition, subtraction, multiplication, load, move, read, comparison, XOR, NAND, NOR, NOT, shift left, shift right, barrel shift left, barrel shift right in VLIW microprocessor. It also solves the control competitions and the data competitions in execution module and register file in VLIW microprocessor by the technology of register's bypass.The concept, trait, principle and structure of the VLIW microprocessor are firstly introduced in the paper. It presentations the pipeline technology, introduces the basic design method and characteristics about FPGAs, elaborates the basic scheme of design VLIW microprocessor, verifies 16 kinds of operation functions. Finally, it completes the design of VLIW microprocessor...