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diff --git a/src/systemc/ext/tlm_core/1/req_rsp/interfaces/fifo_ifs.h b/src/systemc/ext/tlm_core/1/req_rsp/interfaces/fifo_ifs.h
new file mode 100644
index 000000000..20d3b7e08
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+++ b/src/systemc/ext/tlm_core/1/req_rsp/interfaces/fifo_ifs.h
@@ -0,0 +1,79 @@
+/*****************************************************************************
+
+  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
+  more contributor license agreements.  See the NOTICE file distributed
+  with this work for additional information regarding copyright ownership.
+  Accellera licenses this file to you under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with the
+  License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+  implied.  See the License for the specific language governing
+  permissions and limitations under the License.
+
+ *****************************************************************************/
+
+#ifndef __SYSTEMC_EXT_TLM_CORE_1_REQ_RSP_INTERFACES_FIFO_IFS_H__
+#define __SYSTEMC_EXT_TLM_CORE_1_REQ_RSP_INTERFACES_FIFO_IFS_H__
+
+#include "tlm_core/1/req_rsp/interfaces/core_ifs.h"
+
+namespace tlm
+{
+
+//
+// Fifo specific interfaces
+//
+
+// Fifo Debug Interface
+
+template <typename T>
+class tlm_fifo_debug_if : public virtual sc_core::sc_interface
+{
+  public:
+    virtual int used() const = 0;
+    virtual int size() const = 0;
+    virtual void debug() const = 0;
+
+    //
+    // non blocking peek and poke - no notification
+    //
+    // n is index of data :
+    // 0 <= n < size(), where 0 is most recently written, and size() - 1
+    // is oldest ie the one about to be read.
+    //
+
+    virtual bool nb_peek(T &, int n) const = 0;
+    virtual bool nb_poke(const T&, int n=0) = 0;
+};
+
+// fifo interfaces = extended + debug
+
+template <typename T>
+class tlm_fifo_put_if : public virtual tlm_put_if<T>,
+    public virtual tlm_fifo_debug_if<T>
+{};
+
+template <typename T>
+class tlm_fifo_get_if :
+    public virtual tlm_get_peek_if<T>,
+    public virtual tlm_fifo_debug_if<T>
+{};
+
+class tlm_fifo_config_size_if : public virtual sc_core::sc_interface
+{
+  public:
+    virtual void nb_expand(unsigned int n=1) = 0;
+    virtual void nb_unbound(unsigned int n=16) = 0;
+
+    virtual bool nb_reduce(unsigned int n=1) = 0;
+    virtual bool nb_bound(unsigned int n) = 0;
+};
+
+} // namespace tlm
+
+#endif /* __SYSTEMC_EXT_TLM_CORE_1_REQ_RSP_INTERFACES_FIFO_IFS_H__ */