send_.asm

51系列单片机的汇编程序包

    ORG 0000H
    AJMP START
    ORG 0030H
START:;MOV SP,#59H
      MOV SCON,#50H  ;;0101 0000
      MOV PCON,#80H  ;;1000 0000
      MOV TMOD,#20H  ;;
      MOV TH1,#0F3H
      MOV TL1,#0F3H
      MOV R0, #30H   ;;要发送数据的指针
      MOV R3, #05H   ;;要发送的数据个数
      CLR EA
      CLR ET1
      SETB TR1
send: MOV A,@r0
      MOV SBUF,a
      
      ;sjmp send
      
EXIT: JNB TI,$
      CLR TI
      INC R0
      DJNZ R3,send
      SJMP start
      END