单片机第一个代码 - 平头弟

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单片机第一个代码

2019-07-14 00:22发布生成海报

站内文章 / 电源技术

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完成从20H、30H开始的10字节相加，相加的结果依次赋给30H开始的单元。

ORG 0000H
MAIN:
MOV 30H,#22H ;赋初值
MOV 31H,#22H
MOV 32H,#22H
MOV 33H,#22H
MOV 34H,#22H
MOV 35H,#22H
MOV 36H,#22H
MOV 37H,#22H
MOV 38H,#22H
MOV 39H,#22H
MOV 20H,#00H
MOV 21H,#01H
MOV 22H,#02H
MOV 23H,#03H
MOV 24H,#04H
MOV 25H,#05H
MOV 26H,#06H
MOV 27H,#07H
MOV 28H,#08H
MOV 29H,#09H
MOV R0,#30H
MOV R1,#20H
MOV R2,#0AH
LOOP:
MOV A,@R0  //寄存器间接寻址
ADDC A,@R1
MOV @R0,A
INC R0
INC R1
DJNZ R2,LOOP
END

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