DAFCA's ClearBlue(tm) Silicon Debug Platform is at the leading edge of in-system, at-speed DFD (Design-for-Debug) technology. Designers use the ClearBlue Instrumentation Studio to provision the design with a light-weight Reconfigurable Debug Infrastructure (ReDI) inside the standard synthesis flow. Post-silicon, engineers use the ReDI instruments to manipulate and control on-chip signals, in-system and at speed. Debug data is collected from deep within the chip in the Novas FSDB format for visualization within the Verdi Automated Debug System or Debussy Debug System. Interoperability between the on-chip instrumentation, the Novas visualization, and the DAFCA analysis tools creates a tightly integrateed pre-silicon/post-silicon validation environment, and delivers a unique and effective functional debug methodology.