开发FPGA的ALTREA参数化模块库的资料，有英文原版及中文版介绍。-Development of FPGA-ALTREA parameterized module library information is available in English and Chinese version of original descr iption

RISC_CPU的设计不仅简化了指令系统，而且还通过简化指令系统使计算机的结构更加简单合理，从而提高了运算速度。本设计以硬件描述语言代码形式存在可与任何综合库、工艺库以及FPGA结合开发出用户需要的固核和硬核，可读性好，易于扩展使用。-RISC_CPU not only simplifies the design of instruction, but instruction by simplifying the structure of the computer is more simple

sha1_testbench.v -- Testbench with vectors NIST FIPS 180-2 sha1_exec.v -- Top level sha1 module sha1_round.v -- primitive sha1 round dffhr.v -- generic parameterizable D-flip flop library Performance Analysis Performance equa

Descr iption: The design of music box based on FPGA realizes the circular playback of multiple music or the selection of one music in the music library.