Kc89c72 Datasheet __exclusive__ ✯

: While primarily for sound, its general-purpose I/O ports are often used to read joysticks or keyboards in vintage systems. Application Circuit Essentials

While exact pinouts vary by package type (commonly found in or QFP packages), the functional groups of the KC89C72 are standard for storage controllers. kc89c72 datasheet

| /BC1 | /BDIR | Mode | Operation | | :--- | :--- | :--- | :--- | | 0 | 0 | Inactive | Data bus high impedance | | 0 | 1 | Write | Write data from DA0-7 to the selected register (address from A8) | | 1 | 0 | Read | Read value from selected register | | 1 | 1 | Address | Latch address from A8, prepare for read/write | : While primarily for sound, its general-purpose I/O

Capable of producing percussive or environmental sounds (like explosions or wind). I/O Ports: I/O Ports: