text1.asm

来自「LED显示程序,里面有详细说明,还有解释」· 汇编 代码 · 共 29 行

     ORG 0000H
     SJMP MAIN 
     ORG 0030H
MAIN:MOV DPTR,#TAB
      MOV A,#0
      MOVC A,@A+DPTR
      MOV P0,A
      MOV P2,#7FH
      LCALL DELAY1S
      MOV A,#1
      MOVC A,@A+DPTR
      MOV P0,A
      MOV P2,#7FH
      LCALL DELAY1S
      SJMP MAIN
;延时1秒子程序
DELAY1S: MOV R6,#4
 DL1:  MOV R5,#251			
 DL2:  MOV R4,#248
 DL3:  NOP		
       NOP			 
       DJNZ R4,DL3		
       DJNZ R5,DL2			 
       DJNZ R6,DL1		
       RET
TAB:   DB 28H EBH 32H A2H E1H A4H 24H EAH         ;0 1 2 3 4 5 6 7 
       DB 20H A0H 60H 25H 3CH 23H 34H 74H         ;8 9 A b C d E F
       END