diff options
| -rw-r--r-- | source/soundux.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/source/soundux.cpp b/source/soundux.cpp index 329f3bd..d9a3436 100644 --- a/source/soundux.cpp +++ b/source/soundux.cpp @@ -1135,9 +1135,10 @@ void MixStereo (int sample_count) } else { - for (;VL > 0; VL--) - if ((noise_gen <<= 1) & 0x80000000L) - noise_gen ^= 0x0040001L; + // Snes9x 1.53's SPC_DSP.cpp, by blargg + int feedback = (noise_gen << 13) ^ (noise_gen << 14); + noise_gen = (feedback & 0x4000) ^ (noise_gen >> 1); + VL = 0; ch->sample = (noise_gen << 17) >> 17; ch->interpolate = 0; } |