ӷ
ORG 0000H
MOV P1,#0FFH
MOV P2,#0FFH
MOV A,P1
MOV R0,P2
ADD A,R0
MOV P3,A
END

ORG 0000H
MOV P1,#0FFH
MOV P2,#0FFH
CLR C
MOV A,P1
MOV R0,P2
SUBB A,R0
MOV P3,A
END
˷ָ
ORG 0000H
MOV P1,#0FFH
MOV P2,#0FFH
MOV A,P1
MOV B,P2
MUL  AB
MOV P0,B
MOV P3,A
END
ָ
ORG 0000H
MOV P1,#0FFH
MOV P2,#0FFH
MOV A,P1
MOV B,P2
DIV AB
MOV P0,B
MOV P3,A
END
