ORG 0000H
MOV A,P1
CLR C
CJNE A,#126,CHECK1 ; if a=126 go to next line acall ;on
ACALL ON ; else jump to check1
AJMP 0000h
CHECK1: JNC UP ; if A>126 then C is not ;set...jump to up
ACALL ON ; else acall on
AJMP 0000h
UP: CJNE A,#254,TURNOFFV1 ; if a=254 go to next line ;acall off
ACALL OFF
AJMP 0000h
TURNOFFV1: CLR P2.0
SETB P2.1
AJMP 0000H

ON: ORL P2,#00000011B
RET
OFF: ANL P2,#11111100B
RET


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U can have the same result with this code use subb instruction


ORG 0000H
MOV A,P1
MOV R0,P1
CLR C
SUBB A,#127
JNC UP
ORL P2,#00000011B
AJMP 0000H
UP: MOV A,R0
XRL A,#254
JZ OFF
CLR P2.0
SETB P2.1
AJMP 0000H
OFF: ANL P2,#11111100B
AJMP 0000H