8051 program to get data from SWs on P1 and send it to LEDs on P2
ORG 0
MOVA,#0
MOVP2,A ;P2 as output
MOVA,#0FFH
MOVP1,A;P1 AS INPUT
BACK:MOV A,P1;get data from SWs on P1
MOV P2,A ;send it to LEDs on P2
SJMP BACK ;keep doing it
EN D
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