四位十六进制转换十进制.asm

51单片机汇编语言下的一些小算法

MOV R2,#052H
mov r6,#0ffh
MOV A,R2
CLR C
MOV 20H,#00H
MOV 21H,#00H
MOV 22H,#00H
MOV 24H,#00H
MOV 25H,#00H
MOV R3,#10H
NEXT: RLC A
MOV R2,A
MOV A,20H
ADDC A,20H
DA A
MOV 20H,A
MOV A,21H
ADDC A,21H
DA A
MOV 21H,A
MOV A,22H
ADDC A,22H
DA A
MOV 22H,A
MOV A,R2
DJNZ R3,NEXT
MOV A,R6
clr c
MOV R3,#08H
NEXT1: RLC A
MOV R6,A
MOV A,24H
ADDC A,24H
DA A
MOV 24H,A
MOV A,25H
ADDC A,25H
DA A
MOV 25H,A
mov a,r6
DJNZ R3,NEXT1
clr c
mov a,24h
addc a,20h
da a
mov 20h,a
mov a,25h
addc a,21h
da a
mov 21h,a
mov a,22h
addc a,#00h
da a
mov 22h,a
sjmp $