51單片機(jī)多字節(jié)除法匯編語言程序

ID:223429 · 發(fā)表于 2017-7-30 19:49

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

ID:349169 · 發(fā)表于 2018-7-15 16:46

看不太懂，又沒有詳細(xì)一點(diǎn)的注釋什么的

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51單片機(jī)多字節(jié)除法匯編語言程序