sfc: noise linear feedback shift register state constructed with or n…

…ot xor
ares-emulator · Jun 12, 2023 · c4aea44 · c4aea44
1 parent c4863ef
commit c4aea44
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/ares/sfc/dsp/misc.cpp b/ares/sfc/dsp/misc.cpp
@@ -24,6 +24,6 @@ auto DSP::misc30() -> void {
   //noise
   if(counterPoll(noise.frequency)) {
     s32 feedback = noise.lfsr << 13 ^ noise.lfsr << 14;
-    noise.lfsr = feedback & 0x4000 ^ noise.lfsr >> 1;
+    noise.lfsr = feedback & 0x4000 | noise.lfsr >> 1;
   }
 }