; turns on LED when button is pressed & retains its state
;AT89C51, P1.0 is LED,P1.1 is connected to push sw.

ORG 0
Loop:
MOV C,P1.1 ;get the button state
MOV P1.0,C ;display button state on LED
SJMP Loop

END

it should switch on the LED forever when button is pressed down once. instead it switches off when button is released.

what is wrong here ?

thanks in advance

regards

pete