X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=MUON%2FAliMUONRegionalTriggerBoard.cxx;h=4d5c22dcf9c66a8f89a3f4500adde1d2e95aac82;hb=2ba76308a84d58f05e6e8a91db4d2ee4584b6a7b;hp=42f9fe5c8a219f9564a0ab1639ff72c99685107f;hpb=a6e0ebfecb0f40425d846df3110255aecf0a2c4b;p=u%2Fmrichter%2FAliRoot.git

diff --git a/MUON/AliMUONRegionalTriggerBoard.cxx b/MUON/AliMUONRegionalTriggerBoard.cxx
index 42f9fe5c8a2..4d5c22dcf9c 100644
--- a/MUON/AliMUONRegionalTriggerBoard.cxx
+++ b/MUON/AliMUONRegionalTriggerBoard.cxx
@@ -70,6 +70,8 @@ void AliMUONRegionalTriggerBoard::Response()
 // [+, -] * [Hpt, Lpt]
 // transformed to [+, -, US, LS] * [Hpt, Lpt]
 
+  if ( IsNull() ) return; // Do nothing if all local responses are null
+
   Int_t t[16];
 
    for (Int_t i = 0; i < 16; ++i)
@@ -99,6 +101,7 @@ void AliMUONRegionalTriggerBoard::Response()
       
       rank /= 2; 
    }
+
    fResponse = t[0]; // 8-bit [H4:L4]
 }
 
@@ -210,5 +213,24 @@ void AliMUONRegionalTriggerBoard::Mask(UShort_t mask)
     fMask = mask;
 }
 
+//___________________________________________
+Bool_t AliMUONRegionalTriggerBoard::IsNull()
+{
+  /// Check if all local response are null
+  for (Int_t i=0; i<16; i++) {
+    if ( fLocalResponse[i] ) return kFALSE;
+  }
+  return kTRUE;
+}
 
 
+//___________________________________________
+void AliMUONRegionalTriggerBoard::Reset()
+{
+  /// Reset board
+
+  for (Int_t i=0; i<16; ++i) fLocalResponse[i] = 0;
+
+  fResponse = 0;
+  
+}