
          ALPHALOCK    option for subprogram                   PAGE  A2
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          Format       CALL ALPHALOCK(numeric-variable)

 
          Description
 
          The ALPHALOCK detects if the key ALPHALOCK key is on or off.
          If the ALPHALOCK key is off the numeric-variable will be 0.
          But if the ALPHALOCK key is on numeric-variable will be non
          zero i.e. -26294 just for giggles that is hex >994A
          ALPHALOC runs from ROM.
 
          Programs
 
          Check ALPHALOCK key on/off    | >100 CALL ALPHALOCK(N)
          Show the value of N           | >110 PRINT N
          If N not zero then HONK       | >120 IF N THEN CALL HONK
          Loop forever                  | >130 GOTO 100                          
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