From 38b16fe5ae15fcdf719bf288dbd327d6815a9e92 Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Tue, 18 May 2021 01:37:14 -0500
Subject: [PATCH] fix porta up/down

---
 src/engine/playback.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/engine/playback.cpp b/src/engine/playback.cpp
index 30fdb38ad..62b972a63 100644
--- a/src/engine/playback.cpp
+++ b/src/engine/playback.cpp
@@ -217,11 +217,11 @@ void DivEngine::processRow(int i, bool afterDelay) {
       
       case 0xe1: // portamento up
         chan[i].portaNote=chan[i].note+(effectVal&15);
-        chan[i].portaSpeed=(effectVal>>4)*3;
+        chan[i].portaSpeed=(effectVal>>4)*4;
         break;
       case 0xe2: // portamento down
         chan[i].portaNote=chan[i].note-(effectVal&15);
-        chan[i].portaSpeed=(effectVal>>4)*3;
+        chan[i].portaSpeed=(effectVal>>4)*4;
         break;
       case 0xe5: // pitch
         chan[i].pitch=effectVal-0x80;