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IUS8.2: convert logic value to wreal

Chris Smit

Hi,

 I am using IUS8.2 (IC6.1.3) and try to use the new wreal functionality (i.e. multiple drivers for a wreal net and use a resolution function for that). Now I am stuck at how a logic value translates into a wreal value, see example below.

module foo(out)
output out;
wreal out;
reg reg_int;
initial reg_int = 1'bz;
assign out = reg_int;
end module

To what value will out resolve?

The Z state of reg_int resolves into a 0, this is also true for the X state. Is there some possibility that it translates into `wrealZState and `wrealXState repectively?

 Chris.

  • Chris Smit

     Ok, I think I figured it out. In stead of the one assign statement use the following:

    assign out = (reg_int === 1'bx) ? `wrealXState : `wrealZState ;
    assign out = (reg_int === 1'b1) ? 1.234 : `wrealZState ;
    assign out = (reg_int === 1'b0) ? 0.234 : `wrealZState ;

     Chris.

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