aica: skip remaining step functions when channel is disabled

CA is reset to 0 when channel is disabled due to AEG and this value must not be changed. Issue #472 and #1180
flyinghead · Sep 7, 2024 · 5393235 · 5393235
1 parent a81a02f
commit 5393235
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/core/hw/aica/sgc_if.cpp b/core/hw/aica/sgc_if.cpp
@@ -612,9 +612,12 @@ struct ChannelEx
 			clip_verify((s64)sample*oDsp>=0);
 
 			StepAEG(this);
-			StepFEG(this);
-			StepStream(this);
-			lfo.Step(this);
+			if (enabled)
+			{
+				StepFEG(this);
+				StepStream(this);
+				lfo.Step(this);
+			}
 			return true;
 		}
 	}