10 FOR Y=0 TO 10:Z=PEEK(&HFBE5+Y)
30 IF Z=255 THEN 80 '
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40 PRINT"Y=";Y:Z$=RIGHT$("00000000"+BIN$(Z),8)
60 PRINT"X=";8-INSTR(Z$,"0"):PRINT
80 NEXT:GOTO 10 '
W
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