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SNES-TST

This projects intends to clean up the blurry RGB video on the 3-chip SNES by using the PPU2's test pins. The board has only been tried on a SNSP-CPU-01 motherboard but it should work with all revisions. The firmware is missing most of the board's functions. The planned functions are the following:

  • dual analog ouput (verified, need further noise analysis, furthermore direct comparision is needed to the original video)
  • Mode-7 patch for the test pins (verified)
  • SuperCIC (verified)
  • dual-frequency oscillator (not tested)
  • controller support (partwise verified)
  • dejitter (not tested)
  • D4 patch (not tested)
  • RGB LED support with PWM (not tested)