yanyixing.asm

里面包含了很多用C写的单片机源程序

  org 0000h
 LOOP:  mov r0,#50h
    mov r2,#04h
     clr 30H
   loop0: MOV 20h,@r0
          inc r0
         MOV a,@R0
         CJNE A,20H ,LOOP1
      AJMP HERE
     LOOP1:JC LOOP2
   HERE:DJNZ R2,LOOP0
   JB 30H, LOOP
    LOOP2:DEC R0
    MOV @R0,A
     INC R0
    MOV @R0,20H
    SETB 30H
   DJNZ R2,LOOP0
    JB 30H, LOOP
   THERE:SJMP THERE