From ca51ee9f320f2aef1e2d3b32c3d953e99230dbba Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Tue, 29 Aug 2023 03:38:59 -0500
Subject: [PATCH] C219: fix bank note off

---
 src/engine/platform/c140.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/engine/platform/c140.cpp b/src/engine/platform/c140.cpp
index 873825648..d3ddb1133 100644
--- a/src/engine/platform/c140.cpp
+++ b/src/engine/platform/c140.cpp
@@ -249,7 +249,7 @@ void DivPlatformC140::tick(bool sysTick) {
             // shut everyone else up
             for (int j=0; j<4; j++) {
               int ch=(i&(~3))|j;
-              if (chan[ch].active && (i&3)!=j) {
+              if (chan[ch].active && !chan[ch].keyOn && (i&3)!=j) {
                 chan[ch].sample=-1;
                 chan[ch].active=false;
                 chan[ch].keyOff=true;
@@ -447,6 +447,12 @@ void DivPlatformC140::forceIns() {
     chan[i].volChangedR=true;
     chan[i].sample=-1;
   }
+  if (is219) {
+    // restore banks
+    for (int i=0; i<4; i++) {
+      rWrite(0x1f1+(((3+(i>>2))&3)<<1),groupBank[i>>2]);
+    }
+  }
 }
 
 void* DivPlatformC140::getChanState(int ch) {