Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

ModelSim "out of range" issue

I have the following code: Library IEEE; use IEEE.Std_Logic_1164.all; use IEEE.numeric_std.all; use IEEE.Math_real.all ; ... WIDTH_DQ : natural := 9 ; X : in integer rang...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

While waiting on anther long simulation (because I have to run most of my simulations in Timing Simulation mode because my code tends to provoke the obscure "Fatal : Unexpected signal 11" error in RTL Simulation mode) I did a (the) calculation on my design:

As the longest vector to rotate is either (127,127) or (127,-127) which has a length of sqrt(x^2 + y^2) or 179.6. This however gets multiplied by the Cording Gain of about 1.647 which gives : 295.8. And this takes one bit more than I catered for. So to Kevin: my sincerest apologies. Can't say that I didn't learn something, though!

Thanks again to Kevin and Dave for the help.