Texas Instruments Programmable Sound Generator
+----------+ D5 |1 +--+ 16| Vcc D6 |2 15| D4 D7 |3 14| CLOCK READY |4 13| D3 /WE |5 SN 12| D2 /OE |6 76489 11| D1 SND OUT |7 10| D0 GND |8 9| NC +----------+
SN76489