Guitar effects manufacturer Line 6 collaborated with Freescale semiconductor to develop a Windows-based programming interface for their modular digital effects pedals. They’ve just released the software along with a writable hardware module as the ToneCore DSP development kit.
This could be a great and relatively affordable way to experiment with DSP for those interested. The included code examples are written in assembly language and C programming is possibly using Freescaleâ€™s software tools. [Thanks, Jan]