From d0245e9c51e4600bf5a2f5a1199d980eba90a801 Mon Sep 17 00:00:00 2001
From: Jan Michel <j.michel@gsi.de>
Date: Fri, 19 Sep 2014 13:46:39 +0200
Subject: [PATCH] assume old format if header missing

---
 tools/unpacker/unpacker.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/unpacker/unpacker.cxx b/tools/unpacker/unpacker.cxx
index d38bc23..6b0c053 100644
--- a/tools/unpacker/unpacker.cxx
+++ b/tools/unpacker/unpacker.cxx
@@ -86,7 +86,7 @@ signed analyzeData(hadaq::RawSubevent* sub, unsigned ix, unsigned datalen, unsig
   
   unsigned rocHead   = sub->Data(ix++);
   if(((rocHead>>24) & 0xFF) != 1 || (rocHead & 0xFF) != 1) {
-    return -37;
+    ix--;  //assume it's old format
     }
   else {
     unsigned externalTimer = sub->Data(ix++);
-- 
2.43.0