stest.asm

51单片机实现语音与超声波系统

        CSEG AT 4000H
        LJMP START
      
        CSEG AT 4100H
START:  NOP
SEND:   SETB P1.0
        NOP
        NOP
        NOP
        NOP
        NOP
        CLR  P1.0
        NOP
        NOP
        NOP
        NOP
        JMP  SEND
     
             
        END