AY-3-8910

Equivalence table

Rebadged as	Found on PCB (manufacturer)
89C10	CMC
95101	CMC
JFC 95101	Dynax, Nakanihon
KC89C72	CMC, Igrosoft, Novomatic, TAB
TT3355
WB5300	TAB
Winbond WF19054	BMC, Dyna, some gambling & 8-liner PCBs
YM2149	Yamaha

Programmable Sound Generator

Pinout

AY-3-8910
DIP40
        +---\/---+
Vss(GND)| 1    40| Vcc (+5V)
     NC | 2    39| TEST 1
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
   IOA7 |14    27| BDIR
   IOA6 |15    26| TEST 2
   IOA5 |16    25| A8
   IOA4 |17    24| *A9
   IOA3 |18    23| *RESET
   IOA2 |19    22| CLOCK
   IOA1 |20    21| IOA0
        +--------+


AY-3-8912
DIP28
          +---\/---+
  AN.CH.C | 1    28| DA0
   TEST 1 | 2    27| DA1
Vcc (+5V) | 3    26| DA2
  AN.CH.B | 4    25| DA3
  AN.CH.A | 5    24| DA4
Vss (GND) | 6    23| DA5
     IOA7 | 7    22| DA6
     IOA6 | 8    21| DA7
     IOA5 | 9    20| BC1
     IOA4 |10    19| *BC2
     IOA3 |11    18| BDIR
     IOA2 |12    17| A8
     IOA1 |13    16| *RESET
     IOA0 |14    15| CLOCK
          +--------+

Frequency

AY-3-8910
Set reader to FREQ, put black probe to GND, red probe to 22 to measure CPU clock

AY-3-8912
Set reader to FREQ, put black probe to GND, red probe to 15 to measure CPU clock

External links

AY-3-8910 page on Wikipedia

Files

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  AY-3-8910 Datasheet