From fd253c37f00587d3e7a8473b7aff716e3b7a79a1 Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Mon, 1 Jul 2024 04:04:04 -0500
Subject: [PATCH] XM import: why does this module have inverted loop

---
 src/engine/fileOps/xm.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/engine/fileOps/xm.cpp b/src/engine/fileOps/xm.cpp
index 6d8324462..d0353bf77 100644
--- a/src/engine/fileOps/xm.cpp
+++ b/src/engine/fileOps/xm.cpp
@@ -234,6 +234,7 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
       ds.system[i]=DIV_SYSTEM_ES5506;
       ds.systemFlags[i].set("amigaVol",true);
       ds.systemFlags[i].set("amigaPitch",(ds.linearPitch==0));
+      ds.systemFlags[i].set("volScale",3900);
     }
     ds.systemLen=(totalChans+31)>>5;
 
@@ -546,6 +547,12 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
           s->loopStart=reader.readI();
           s->loopEnd=reader.readI()+s->loopStart;
 
+          if (s->loopStart>s->loopEnd) {
+            s->loopStart^=s->loopEnd;
+            s->loopEnd^=s->loopStart;
+            s->loopStart^=s->loopEnd;
+          }
+
           sampleVol[i][j]=reader.readC();
 
           signed char fine=reader.readC();