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// @file  ControlUnit.v

// @brief Control Unit of Quantum Processor

// @date  9/28/2014

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module ControlUnit (

  input         Clock,

  input         Reset,

  input  [0:7]  BusDataIn,

  input  [0:15] AluResult,

  output        IncrementPC,

  output        WritePC,

  output        WriteEnable,

  output [0:7]  BusDataOut,

  output [0:7]  NewPC,

  output [0:7]  AluInstruction,

  output [0:7]  AluInput1,

  output [0:7]  AluInput2,

  output [0:7]  REGA,

  output [0:7]  REGB,

  output [0:7]  REGC,

  output [0:7]  REGX,

  output [0:7]  REGY,

  output [0:7]  REGZ

  );

  wire [0:15] ExecuteCode;

  wire [0:7]  Opcode;

  wire [0:7]  FetchTemporalReg1;

  wire [0:7]  FetchTemporalReg2;

  wire [0:7]  FetchTemporalReg3;

  wire        RequestDecode;

  wire        DecodeIsBusy;

  wire        LockPC;

  wire        PCIsNotLocked;

  wire        IncrementPC1;

  wire        ExecuteIsBusy;

  wire        RequestExecute;

  wire        MemoryIsCorrupted;

  wire        RequestUnlockPC;

  FetchUnit FetchUnit(

    .Clock             (Clock),

    .Reset             (Reset),

    .DecodeIsBusy      (DecodeIsBusy),

    .RequestUnlockPC   (RequestUnlockPC),

    .BusDataIn         (BusDataIn),

    .Opcode            (Opcode),

    .FetchTemporalReg1 (FetchTemporalReg1),

    .FetchTemporalReg2 (FetchTemporalReg2),

    .FetchTemporalReg3 (FetchTemporalReg3),

    .RequestDecode     (RequestDecode),

    .LockPC            (LockPC),

    .PCIsNotLocked     (PCIsNotLocked),

    .IncrementPC       (IncrementPC1)

  );

  DecodeUnit DecodeUnit(

    .Clock             (Clock),

    .Reset             (Reset),

    .RequestDecode     (RequestDecode),

    .ExecuteIsBusy     (ExecuteIsBusy),

    .Opcode            (Opcode),

    .FetchTemporalReg1 (FetchTemporalReg1),

    .FetchTemporalReg2 (FetchTemporalReg2),

    .FetchTemporalReg3 (FetchTemporalReg3),

    .ExecuteCode       (ExecuteCode),

    .DecodeIsBusy      (DecodeIsBusy),

    .RequestExecute    (RequestExecute),

    .MemoryIsCorrupted (MemoryIsCorrupted)

  );

  ExecuteUnit ExecuteUnit(

    .Clock             (Clock),

    .Reset             (Reset),

    .RequestExecute    (RequestExecute),

    .AluResult         (AluResult),

    .ExecuteCode       (ExecuteCode),

    .FetchTemporalReg1 (FetchTemporalReg1),

    .FetchTemporalReg2 (FetchTemporalReg2),

    .FetchTemporalReg3 (FetchTemporalReg3),

    .REGA              (REGA),

    .REGB              (REGB),

    .REGC              (REGC),

    .REGX              (REGX),

    .REGY              (REGY),

    .REGZ              (REGZ),

    .AluInput1         (AluInput1),

    .AluInput2         (AluInput2),

    .AluInstruction    (AluInstruction),

    .BusDataOut        (BusDataOut),

    .NewPC             (NewPC),

    .WritePC           (WritePC),

    .ExecuteIsBusy     (ExecuteIsBusy),

    .RequestUnlockPC   (RequestUnlockPC),

    .WriteEnable       (WriteEnable)

  );

  assign IncrementPC = PCIsNotLocked & IncrementPC1;

endmodule

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// EOF

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