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diff --git a/src/systemc/ext/tlm_core/1/req_rsp/interfaces/core_ifs.h b/src/systemc/ext/tlm_core/1/req_rsp/interfaces/core_ifs.h
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+++ b/src/systemc/ext/tlm_core/1/req_rsp/interfaces/core_ifs.h
@@ -0,0 +1,135 @@
+/*****************************************************************************
+
+  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_CORE_IFS_H__
+#define __SYSTEMC_EXT_TLM_CORE_1_REQ_RSP_INTERFACES_CORE_IFS_H__
+
+#include "tlm_core/1/req_rsp/interfaces/tag.h"
+
+namespace tlm
+{
+
+// Bidirectional blocking interfaces.
+template <typename REQ, typename RSP>
+class tlm_transport_if : public virtual sc_core::sc_interface
+{
+  public:
+    virtual RSP transport(const REQ &) = 0;
+
+    virtual void
+    transport(const REQ &req, RSP &rsp)
+    {
+        rsp = transport(req);
+    }
+};
+
+// Uni-directional blocking interfaces.
+template <typename T>
+class tlm_blocking_get_if : public virtual sc_core::sc_interface
+{
+  public:
+    virtual T get(tlm_tag<T> *t=nullptr) = 0;
+    virtual void get(T &t) { t = get(); }
+};
+
+template <typename T>
+class tlm_blocking_put_if : public virtual sc_core::sc_interface
+{
+  public:
+    virtual void put(const T &t) = 0;
+};
+
+// Uni-directional non blocking interfaces.
+
+template <typename T>
+class tlm_nonblocking_get_if : public virtual sc_core::sc_interface
+{
+  public:
+    virtual bool nb_get(T &t) = 0;
+    virtual bool nb_can_get(tlm_tag<T> *t=nullptr) const = 0;
+    virtual const sc_core::sc_event &
+        ok_to_get(tlm_tag<T> *t=nullptr) const = 0;
+};
+
+template <typename T>
+class tlm_nonblocking_put_if : public virtual sc_core::sc_interface
+{
+  public:
+    virtual bool nb_put(const T &t) = 0;
+    virtual bool nb_can_put(tlm_tag<T> *t=nullptr) const = 0;
+    virtual const sc_core::sc_event &
+        ok_to_put(tlm_tag<T> *t=nullptr) const = 0;
+};
+
+// Combined uni-directional blocking and non blocking.
+template <typename T>
+class tlm_get_if : public virtual tlm_blocking_get_if<T>,
+    public virtual tlm_nonblocking_get_if<T>
+{};
+
+template <typename T>
+class tlm_put_if : public virtual tlm_blocking_put_if<T>,
+    public virtual tlm_nonblocking_put_if<T>
+{};
+
+// Peek interfaces.
+template <typename T>
+class tlm_blocking_peek_if : public virtual sc_core::sc_interface
+{
+  public:
+    virtual T peek(tlm_tag<T> *t=nullptr) const = 0;
+    virtual void peek(T &t) const { t = peek(); }
+};
+
+template <typename T>
+class tlm_nonblocking_peek_if : public virtual sc_core::sc_interface
+{
+  public:
+    virtual bool nb_peek(T &t) const = 0;
+    virtual bool nb_can_peek(tlm_tag<T> *t=nullptr) const = 0;
+    virtual const sc_core::sc_event &
+        ok_to_peek(tlm_tag<T> *t=nullptr) const = 0;
+};
+
+template <typename T>
+class tlm_peek_if :
+    public virtual tlm_blocking_peek_if<T>,
+    public virtual tlm_nonblocking_peek_if<T>
+{};
+
+// Get_peek interfaces.
+template <typename T>
+class tlm_blocking_get_peek_if : public virtual tlm_blocking_get_if<T>,
+    public virtual tlm_blocking_peek_if<T>
+{};
+
+template <typename T>
+class tlm_nonblocking_get_peek_if : public virtual tlm_nonblocking_get_if<T>,
+    public virtual tlm_nonblocking_peek_if<T>
+{};
+
+template <typename T>
+class tlm_get_peek_if : public virtual tlm_get_if<T>,
+    public virtual tlm_peek_if<T>, public virtual tlm_blocking_get_peek_if<T>,
+    public virtual tlm_nonblocking_get_peek_if<T>
+{};
+
+} // namespace tlm
+
+#endif /* __SYSTEMC_EXT_TLM_CORE_1_REQ_RSP_INTERFACES_CORE_IFS_H__ */