If you're digging into its datasheet, you're likely looking at the heart of vintage gaming audio. This 40-pin chip powered the distinctive, crunchy soundscapes of 1980s arcades and home computers like the and MSX . Key Specifications at a Glance
However , the datasheet emphasizes that /BC2 is typically tied high. If you need a more complex bus interface (like sharing with a Z80 CPU without additional glue logic), you can modulate /BC2. kc89c72 datasheet