PC_ALU.v

module PC_ALU (
    input [6:0] k,
    input [6:0] PC_count,
    input instruction,
    output [6:0] newPC
);

    reg [6:0] _newPC, neg_k;

    always @(k, PC_count, instruction) begin

        if (instruction)  // JMP
            _newPC <= k;
        else begin  // BRBS
            if (k[6]) begin  // negative number
                neg_k  = ~k + 1;  // Complemento a 2 para revertir el numero
                _newPC = PC_count - neg_k;
            end else _newPC = PC_count + k;
        end

    end

    assign newPC = _newPC;
endmodule