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load.bc
update.bc
cheatsheet

Input (,)

0 = Left arrow             => (0 = unpressed, 1 = pressed)
1 = Up arrow               => (0 = unpressed, 1 = pressed)
2 = Right arrow            => (0 = unpressed, 1 = pressed)
3 = Down arrow             => (0 = unpressed, 1 = pressed)
4 = 'A' key                => (0 = unpressed, 1 = pressed)
5 = 'S' key                => (0 = unpressed, 1 = pressed)
6 = X coordinate of mouse  => (0 to 24)
7 = Y coordinate of mouse  => (0 to 18)
8 = Mouse click            => (0 = unpressed, 1 = pressed)

Output (.)

0 = No change (shows the background color)
1 = Black (#333)
2 = Gray  (#ccc)
3 = White (#fff)
4 = Red   (#c33)
5 = Green (#3c3)
6 = Blue  (#33c)