AJMP START
ORG 0030H
START: MOV SP,#60H ;堆棧,本程序也可不要
MOV 30H,#56H ;求5678H+1234H
MOV 31H,#78H
MOV 32H,#12H
MOV 33H,#34H
MOV A,31H
ADD A,33H
MOV R2,A ;低8位在R2
MOV A,30H
ADDC A,32H
MOV R1,A ;高8位在R1
MOV R3,#10H ;30H至40H***10H個字節
MOV R0,#30H ;間接尋址模式起始地址為30H
CLR A
LOOP: MOV @R0,A
INC R0
DJNZ R3,LOOP
HERE: JMP HERE ;結束原地循環
END