name: AY-3-8910 function: SOUND GENERATOR (PROGRAMMABLE) package: DIP,40 manufacturer: GI added-by: JASON GOHLKE +--()--+ VSS (GND) | 1 40| VCC (+5v) NC | 2 39| TEST 1 <- ANALOG CH B | 3 38| ANALOG CH C -> <- ANALOG 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| TEST2 <-> IOA5 |16 25| A8 <- <-> IOA4 |17 24| /A9 <- <-> IOA3 |18 23| /RESET <- <-> IOA2 |19 22| CLOCK <- <-> IOA1 |20 21| IOA0 <-> +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/