Key Clicker Routine

If you have a newer Apple with the silent keyboard, Don Williams has written a short and sweet machine language routine to solve your problem.

0300:  48              PHA
0301 : A9 20        LDA #$20
0303: 8D 30 CO   STA $C030
0306: 20 A8 FC    JSR $FCA8
0309: 8D 30 CO   STA $C030
030C: 68              PLA
030D: 4C 1B FD   JMP $FDIB
0038: 00 03

Once you store the address ($0300) in location $38 and hit return, your keys will click merrily away until you hit reset. To restart the routine, reenter the address.

•A minor modification of this routine will give you a slow list (with tones) feature. Change the JMP and 030D to FOFD and store the address in $36. The value stored at $0302 may be increased for a slower list.

Loadable Program Follows:

————START OF LISTING———–

0300: 48 A9 20 8D 30 C0 20 A8

0307: FC 8D 30 C0 68 4C 1B FD

0038: 00 03

—————END OF LISTING

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Updated: March 7, 2011 at 13:56
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About the Author

Bill Martens

A.P.P.L.E. Chairman of the Board and Club president -- Bill worked for the founder, Val J. Golding and A.P.P.L.E. from 1981 to 1982. In 1999, he began archiving the materials which were distributed and sold by A.P.P.L.E.. That project led to the group that remained of A.P.P.L.E. Bill was involved in the financial industry in Tokyo and has over 20 major office infrastructure projects to his name. In March 2001, he retired to write books and to spend more time pursuing personal interests. As the president of the users group, Bill is in charge of distribution of Call-A.P.P.L.E. magazine as well as the organization of this web site. Bill currently resides in Tokyo, Japan and Shelton, Wa splitting time between the places.