From fee174a65a679cbf114631d648d8cce68e0706cc Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Wed, 19 Jan 2022 21:53:09 -0500
Subject: [PATCH] fix ECxx accuracy

---
 src/engine/playback.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/engine/playback.cpp b/src/engine/playback.cpp
index 64384338d..d18728103 100644
--- a/src/engine/playback.cpp
+++ b/src/engine/playback.cpp
@@ -862,6 +862,23 @@ bool DivEngine::nextTick(bool noAccum) {
         if (--chan[i].cut<1) {
           chan[i].oldNote=chan[i].note;
           chan[i].note=-1;
+          chan[i].keyOff=true;
+          chan[i].keyOn=false;
+          if (chan[i].stopOnOff) {
+            chan[i].portaNote=-1;
+            chan[i].portaSpeed=-1;
+            chan[i].stopOnOff=false;
+          }
+          if (disCont[dispatchOfChan[i]].dispatch->keyOffAffectsPorta(dispatchChanOfChan[i])) {
+            chan[i].portaNote=-1;
+            chan[i].portaSpeed=-1;
+            if (i==2 && sysOfChan[i]==DIV_SYSTEM_SMS) {
+              chan[i+1].portaNote=-1;
+              chan[i+1].portaSpeed=-1;
+            }
+          }
+          dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false));
+          chan[i].scheduledSlideReset=true;
           dispatchCmd(DivCommand(DIV_CMD_NOTE_OFF,i));
         }
       }