Fabricant inconnu

GI's AY-3-8500 chip

The AY-3-8500 chip: closer view GI's AY-3-8500 chip uses a simple 28-pin DIL package. Curiously, this chip has four pins that are not used. GI could have used a smaller 24-pin package instead, but the use of a 28-pin package could be due to some kind of ascendent compatibility: maybe some more advanced versions could use the same package with the same pinout, and with the four pins used for extra features. This has to be verified and it is still unknown if some other similar chips used the same