51单片机多字节除法汇编语言程序 -

标题: 51单片机多字节除法汇编语言程序 [打印本页]

作者: HUJUN988 时间: 2017-7-30 19:49
标题: 51单片机多字节除法汇编语言程序
MBCDD:
MOV       R0,#11H
MOV       R7,#08H
LOOP1:
MOV       @R0,#00H
INC             R0
DJNZ       R7,LOOP1
MOV       R0,#25H
MOV       R7,#04H
LOOP2:
MOV       @R0,#00H
INC             R0
DJNZ       LOOP2
MOV       R3,#10H
LOOP0:
MOV       R4,#04H
LOOP3:
MOV       R0,#21H
MOV       R7,#08H
CLR             C
LOOP4:
MOV       A,@R0
RLC             A
MOV       @R0,A
INC             R0
DJNZ       R7,LOOP4
DEC             R4
MOV       A,R4
JNZ             A,LOOP3
LOOP5:
MOV       R1,#25H
MOV       R0,#2AH
MOV       R7,#04H
CLR             C
LOOP6:
MOV       A,#9AH
SUBB       A,@R0
ADD             A,@R1
DA             A
MOV       @R1,A
INC             R0
INC             R1
CPL             C
DJNZ       R7, LOOP6
JC             C,LOOP6
MOV       R0,#       11H
INC             @R0,
SJMP       LOOP5
LOOP7:
MOV       R1,#25H
MOV       R0,#2AH
MOV       R7,#04H
CLR             C
LOOP8:
MOV       A,@R1
ADDC       A,@R0
DA             A
MOV       @R1,A
INC             R0
INC             R1
DJNZ       R7,LOOP8
DEC             R3
MOV       A,R3
JZ             A,LOOP11
MOV       R2,#04H
LOOP9:
MOV       R0,#11H
MOV       R7,#08H
CLR             C
LOOP10:
MOV       A,@R0
RLC             A
MOV       @R0,A
INC             R0
DJNZ       R7,LOOP10
DEC             R2
MOV       A,R2
JNZ             A,LOOP9
SJMP       LOOP0
LOOP11:
RET

作者: 行者孙武松 时间: 2018-7-15 16:46
看不太懂，又没有详细一点的注释什么的

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