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the "Don't care" value

 
 
Day_1 Day_1 is offline
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Join Date: Feb 2012
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      02-12-2012
Hello,

I'm a VHDL neophyte, so please excuse my very elementary question
I wanted to make sure that the " - " Don't care value means that we are indifferent to the value of the signal so it is used only during the allocation of that signal.
 
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jeppe jeppe is offline
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Join Date: Mar 2008
Location: Denmark
Posts: 348
 
      02-14-2012
Hi -
Indeed is Don't care only for input, however can't you be sure that your synthesize / simulation tool will be able to handle this value correctly.
 
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