0066-117XX-XXYX

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Bally Custom I/O IC

Used in the Astrocade console and Bally / Midway arcade hardware. Pinout obtained from Astrocade schematic.

       +-----+--+-----+
   GND |1    +--+   40| MXD7
   SI0 |2           39| MXD6
   SI1 |3           38| MXD5
   SI2 |4           37| MXD4
   SI3 |5           36| MXD3
   SI4 |6           35| MXD2
   SI5 |7           34| MXD1
   SI6 |8           33| MXD0
   SI7 |9           32| SO0
  POT0 |10          31| SO1
  POT1 |11          30| /INT
  POT2 |12          29| SO3
  POT3 |13          28| SO4
DISCHG |14          27| SO5
 MONOS |15          26| SO6
     Φ |16          25| SO7
/RESET |17          24| AUDIO
  TEST |18          23| /RFSH
 /IORQ |19          22| Vgg
    /Φ |20          21| Vdd
       +--------------+

Vdd: +5v
Vgg: +10v