AY-3-8912

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General Instrument Programmable Sound Generator

                 +-----+--+-----+
ANALOG CHANNEL C |1    +--+   28| DA0
          Test 1 |2           27| DA1
             Vcc |3           26| DA2
ANALOG CHANNEL B |4           25| DA3
ANALOG CHANNEL A |5           24| DA4
             GND |6           23| DA5
            IOA7 |6   AY-3-   22| DA6
            IOA6 |7     8912  21| DA7
            IOA5 |8           20| BC1
            IOA4 |10          19| BC2
            IOA3 |11          18| BDIR
            IOA2 |12          17| A8
            IOA1 |13          16| /RESET
            IOA0 |14          15| CLOCK
                 +--------------+

Datasheet

General Instrument AY-3-8910 / AY-3-8912 / AY-3-8913