10 POKE 56334, PEEK(56334) AND 254
20 POKE 1, PEEK(1) AND 251
30 FOR X=12288 TO 12799: POKE X, PEEK(X+40960): NEXT X
40 POKE 1, PEEK(1) OR 4
50 POKE 56334, PEEK(56334) OR 1
60 POKE 53272, (PEEK(53272) AND 240) OR 12