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== Sound Chip ==
 
== Sound Chip ==
The AY-3-8912 used in the TS2068 and TC2068 is controlled by two I/O ports:
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The [[AY-3-8912]] used in the TS2068 and TC2068 is controlled by two I/O ports:
 
  OUT (0xf5) - Select a register 0-14
 
  OUT (0xf5) - Select a register 0-14
 
   IN  (0xf6) - Read the value of the selected register
 
   IN  (0xf6) - Read the value of the selected register