华字01.a51

单片机华字的显示的原程序 其简要的概括了程序的手写规范 对单片机初学者来说是很有意义的哟

ORG 0000h
       AJMP start
ORG 0100h
start:
       MOV SP,#60h
       MOV R1,#0EFh
       MOV 58H,#0H
     
       MOV 30h,#0h
       MOV 31h,#0h
       MOV 32h,#20h
       MOV 33h,#4h
       MOV 34h,#030h
       MOV 35h,#0ch

       MOV 36h,#18h
       MOV 37h,#0ch
       MOV 38h,#0ffh
       MOV 39h,#05h
       MOV 3Ah,#0eeh
       MOV 3Bh,#4h
       MOV 3Ch,#4h
       MOV 3Dh,#4h

       MOV 3Eh,#40h
       MOV 3Fh,#0ffh
       MOV 40h,#07fh
       MOV 41h,#3eh
       MOV 42h,#0feh
       MOV 43h,#4h
       MOV 44h,#0b0h
       MOV 45h,#4h

       MOV 46h,#09fh
       MOV 47h,#4h
       MOV 48h,#08eh
       MOV 49h,#4h
       MOV 4Ah,#0c4h
       MOV 4Bh,#0ch
       MOV 4Ch,#80h
       MOV 4Dh,#8h
       MOV 4EH,#00H
       MOV 4FH,#00H


l1:
       MOV R0,#30h
l4:
       MOV 90h,R1
       MOV A,@R0
       CPL A
       MOV 80h,A
       INC R0
       MOV A,@R0
       CPL A
       MOV 0a0h,A
       INC R0
       ACALL delay
       MOV 80h,#0ffh
       MOV 0a0h,#0ffh
       CJNE R1,#7Fh,l3
       AJMP l2
l3:
       MOV A,R1
       RL A 
       MOV R1,A
       AJMP l4
l2:
       MOV 90H,#0FFH
       MOV A,R1
       RL A
       MOV R1,A
       MOV 0b0h,R1
       MOV A,@R0
       CPL A
       MOV 80h,A
       INC R0
       MOV A,@R0
       CPL A
       MOV 0a0h,A
       INC R0
       ACALL delay
       MOV 80h,#0ffh
       MOV 0a0h,#0ffh
       CJNE R1,#7Fh,l2   
       MOV 0B0H,#0FFH
       MOV R0,#30H
       AJMP l3
delay:
       MOV 71H,#4H  
       MOV 70h,#0FFh
m2:
       DJNZ 71H,m1
       RET
m1:
       DJNZ 70h,m1
       AJMP M2
       END