From Intellivision Wiki
(Placeholder summary for now.)
The SPB640 Speech FIFO has three main purposes:
- Interface the SP0256-012 to the Intellivision's bus.
- Provide a 64x10-bit FIFO for speech data for the SP0256-012 to play.
- Provide decoding and buffering for a separate 8-bit expansion bus that could be used for other peripherals, such as the canceled-in-development wireless hand controllers.