AY-3-8930

Enhanced Programmable Sound Generator

Pinout

DIP40
        +---\/---+
Vss(GND)| 1    40| Vcc (+5V)
     NC | 2    39| NC
AN.CH.B | 3    38| AN.CH.C
AN.CH.A | 4    37| DA0
     NC | 5    36| DA1
   IOB7 | 6    35| DA2
   IOB6 | 7    34| DA3
   IOB5 | 8    33| DA4
   IOB4 | 9    32| DA5
   IOB3 |10    31| DA6
   IOB2 |11    30| DA7
   IOB1 |12    29| BC1
   IOB0 |13    28| BC2 (NC)
   IOA7 |14    27| BDIR
   IOA6 |15    26| SELECT
   IOA5 |16    25| A8
   IOA4 |17    24| *A9
   IOA3 |18    23| *RESET
   IOA2 |19    22| CLOCK
   IOA1 |20    21| IOA0
        +--------+

Frequency

Set reader to FREQ, put black probe to GND, red probe to 22 to measure CPU clock

External links

AY-3-8930 page on Wikipedia

Files

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  AY-3-8910 Datasheet