A data processing system has a cache which receives both non-debug snoop requests and debug snoop requests for processing. In a preferred embodiment, the present invention comprises a fastener that is associated with a dispenser spigot, or like device. One embodiment includes an analog-to-digital converter, a Hilbert transform filter, a sideband selection switch, a complex multiplier, a carrier recovery. In the present invention, a color space is quantized differently depending upon the chroma value,.