Six credits: Hold Select and press I, II, II,
I three times, II four times. The word "CREDIT6"
will blink above the title to confirm correct code entry.
Expert mode: Hold Select and press I, I, II,
II.
Yellow mode: Hold Select and press I three times,
II three times, I three times, II four times.
Blue mode: Hold Select and press I four times, II
four times, I four times, II four times.
Green mode: Hold Select and press I three times,
II three times, I four times, II four times.
White mode: Hold Select and press II four times,
I six times, II four times, I six times,
II four times, I six times, II four times,
I six times.
Usagi 5 mode: Hold Select and press I five times, II,
I five times, II, I five times, II.
Shield 5 mode: Hold Select and press I nine times, II
eight times, I seven times, II six times, I
five times, II four times, I three times, II,
II, I.
