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6 lines
289 B
Plaintext
6 lines
289 B
Plaintext
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Sending 0xff to the port resets the keyboard, and then we have
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to send groups we want to "listen" to, with a 0 in the group
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bit. Thus, to know if *any* key is pressed, we send 0xff to
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reset the keypad, then 0x00 to select all groups, if the result
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isn't 0xff, at least one key is pressed.
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