cmd_shift_in.edf

本程序RS232通信的一个实验小程序,其中还有rs232和rs485的介绍!

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          (instance reset_ibuf (viewRef PRIM (cellRef IBUF (libraryRef XC9500)))
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          (instance (rename clock_pad_0 "clock_pad") (viewRef PRIM (cellRef IPAD (libraryRef UNILIB)))          )
          (instance (rename reset_pad_0 "reset_pad") (viewRef PRIM (cellRef IPAD (libraryRef UNILIB)))          )
          (instance (rename nwrite_pad_0 "nwrite_pad") (viewRef PRIM (cellRef IPAD (libraryRef UNILIB)))          )
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           (portRef tdi1)
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          (net clock_c (joined
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           (portRef C (instanceRef cmd_shift_1))
           (portRef C (instanceRef cmd_shift_0))
           (portRef C (instanceRef tdi1_1))
           (portRef C (instanceRef tdi1_cl))
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           (portRef C (instanceRef cmd_inst_3))
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           (portRef C (instanceRef cmd_shift_4))
           (portRef C (instanceRef cmd_shift_3))
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          (net nwrite_c (joined
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