leaburnley

Hi Can anyone help we with something, when I was playing fruit machines in mid 90s there was original monopoly fruit machine, very basic, However someone told me of a button code to do with no credits in which went something like with hold buttons press in sequence 1,3,2,3,2,3,1,3 start. Would seem to do a reset on the machine, is anyone able to advise what it actually did or did it jut reset the machine