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- Pad driver - read input from MD controller
-
- Conveniently expose an API to read the status of a MD pad A.
- Moreover, implement a mechanism to input arbitrary characters
- from it. It goes as follow:
-
- * Direction pad select characters. Up/Down move by one,
- Left/Right move by 5
- * Start acts like Return
- * A acts like Backspace
- * B changes "character class": lowercase, uppercase, numbers,
- special chars. The space character is the first among special
- chars.
- * C confirms letter selection
-
- (cont.)
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