diff --git a/inc/CPU64.h b/inc/CPU64.h
new file mode 100644
index 0000000..9ad68e7
--- /dev/null
+++ b/inc/CPU64.h
@@ -0,0 +1,114 @@
+/*!
+ \file CPU.h
+ \brief Main CPU class
+ \author Màrius Montón
+ \date July 2020
+ */
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef CPU_BASE_H
+#define CPU_BASE_H
+
+#define SC_INCLUDE_DYNAMIC_PROCESSES
+
+#include "systemc"
+
+#include "tlm.h"
+#include "tlm_utils/simple_initiator_socket.h"
+#include "tlm_utils/tlm_quantumkeeper.h"
+
+#include "memory.h"
+#include "MemoryInterface.h"
+#include "BASE_ISA.h"
+#include "Registers.h"
+#include "Log.h"
+#include "Instruction.h"
+#include "C_extension.h"
+#include "M_extension.h"
+#include "A_extension.h"
+
+/**
+ * @brief ISC_V CPU 64 bitsmodel
+ * @param name name of the module
+ */
+class CPU64: sc_core::sc_module {
+public:
+
+	/**
+	 * @brief Instruction Memory bus socket
+	 * @param trans transction to perfoem
+	 * @param delay time to annotate
+	 */
+	tlm_utils::simple_initiator_socket<CPU64> instr_bus;
+
+	/**
+	 * @brief IRQ line socket
+	 * @param trans transction to perform (empty)
+	 * @param delay time to annotate
+	 */
+	tlm_utils::simple_target_socket<CPU64> irq_line_socket;
+
+	/**
+	 * @brief Constructor
+	 * @param name Module name
+	 * @param PC   Program Counter initialize value
+	 */
+	CPU64(sc_core::sc_module_name name, uint32_t PC);
+
+	/**
+	 * @brief Destructor
+	 */
+	~CPU64();
+
+	MemoryInterface *mem_intf;
+
+private:
+	Registers *register_bank;
+	Performance *perf;
+	Log *log;
+	Instruction *inst;
+	C_extension *c_inst;
+	M_extension *m_inst;
+	A_extension *a_inst;
+	BASE_ISA *exec;
+
+	tlm_utils::tlm_quantumkeeper *m_qk;
+
+	bool interrupt;
+	uint32_t int_cause;
+	bool irq_already_down;
+	sc_core::sc_time default_time;
+	bool dmi_ptr_valid;
+
+	/**
+	 *
+	 * @brief Process and triggers IRQ if all conditions met
+	 * @return true if IRQ is triggered, false otherwise
+	 */
+	bool cpu_process_IRQ();
+
+	/**
+	 * main thread for CPU simulation
+	 * @brief CPU mai thread
+	 */
+	void CPU_thread(void);
+
+	/**
+	 * @brief callback for IRQ simple socket
+	 * @param trans transaction to perform (empty)
+	 * @param delay time to annotate
+	 *
+	 * it triggers an IRQ when called
+	 */
+	void call_interrupt(tlm::tlm_generic_payload &trans,
+			sc_core::sc_time &delay);
+
+	/**
+	 * DMI pointer is not longer valid
+	 * @param start memory address region start
+	 * @param end memory address region end
+	 */
+	void invalidate_direct_mem_ptr(sc_dt::uint64 start, sc_dt::uint64 end);
+};
+
+#endif