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17 lines
728 B
Plaintext
17 lines
728 B
Plaintext
( wait until all keys are de-pressed. To avoid repeat keys, we
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require 64 subsequent polls to indicate all depressed keys.
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all keys are considered depressed when the 0 group returns
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0xff. )
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: _wait 64 0 DO 0 _get 0xff = UNTIL ;
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( digits table. seach row represents a group. 0 means
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unsupported. no group 7 because it has no key. )
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CREATE _dtbl
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0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 0 C,
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0xd C, '+' C, '-' C, '*' C, '/' C, '^' C, 0 C, 0 C,
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0 C, '3' C, '6' C, '9' C, ')' C, 0 C, 0 C, 0 C,
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'.' C, '2' C, '5' C, '8' C, '(' C, 0 C, 0 C, 0 C,
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'0' C, '1' C, '4' C, '7' C, ',' C, 0 C, 0 C, 0 C,
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0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 0 C, 0x80 ( alpha ) C,
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0 C, 0 C, 0 C, 0 C, 0 C, 0x81 ( 2nd ) C, 0 C, 0x7f C,
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