Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
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Unexplainable indetermination

Altera_Forum
Collaboratore onorario II
1.319Visualizzazioni

Hello, 

 

i've got this undetermination 'X' and i don't understand its origin, since the function is set to Zero, their roots are zero everywhere, but this signal remains 'X' anyone can help 

 

Code: 

 

AntImagen2 <= Resultattmp(CONV_INTEGER(Pixelactual));  

 

As you can see down the origin its 0 at the center reset, the signal is inicialised to 0 as the others, my code so there is no sense of this X since the code is the same as this* code in this** photo: 

 

* AntImagen1 <= Resultattmp(CONV_INTEGER(Pixelactual)+9); - 

AntImagen2 <= Resultattmp(CONV_INTEGER(Pixelactual)); -- 

AntImagen3 <= Resultattmp(CONV_INTEGER(Pixelactual)+11); - 

** 

http://i47.tinypic.com/22yzjk.jpg  

Pixelactual is set to 12 during all the reset state so pixelactual(12) which is zero... 

 

 

Resultatmp contents: 

http://i50.tinypic.com/29cl5qt.jpg  

 

 

Can anyone help? 

 

Thanx
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2 Risposte
Altera_Forum
Collaboratore onorario II
403Visualizzazioni

Ususally X comes when you drive the same signal from two sources.

Altera_Forum
Collaboratore onorario II
403Visualizzazioni

Solved by resetting all variables and signals Solved at second or third calculation.

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