ginngi engineeringNICAM ISA Board
Our customer was developing a system that took advantage of a sideband in terrestrial transmission (NICAM), normally used for high-quality audio channels, for the transmission of data. Since no standard hardware existed they turned to us to develop a PC board to provide such an interface. The board consisted of a RF terrestrial tuner, a NICAM decoder chip, and interface logic for the ISA bus. Data as decoded by the NICAM chip was made available over the ISA bus using a hardware FIFO.