乙机接收.asm

单片机实验 多机通讯之甲机发送乙机接收

          ORG 4000H
          LJMP CSH
          ORG 4023H
          LJMP INTC
          ORG 4100H
CSH:      MOV TMOD,#20H
          MOV TH1,#0F3H
          MOV TL1,#0F3H
          SETB TR1
          MOV SCON,#50H
          MOV PCON,#80H
          SETB REN
          
        
          MOV R0,#30H
          MOV R7,#0FH
          SETB EA
          SETB ES
          MOV P1,#00H   
          SJMP $
            ORG 4200H     
INTC:      CLR RI
           MOV A,SBUF
            MOV @R0,A
            MOV P1,A
            LCALL DELAY
            INC R0     
            RETI
          
      ORG 4300H
DELAY:MOV R1,#200       ;循环200次延时1S
      MOV TH0,#63H
      MOV TL0,#18H
      SETB TR0
LP1:  JBC TF0,LP2
      SJMP LP1
LP2:  MOV TH0,#63H
      MOV TL0,#18H
      DJNZ R1,LP1
      RET
      END