vhdl code :resolution function for integers

[chaitanyapraveen]

sir,
I am chaitanya from pune. I would like know about the resolution function for integers. could any body please write resolution function for integer in vhdl

 

[K-J]

sir,
I am chaitanya from pune. I would like know about the resolution function for integers. could any body please write resolution function for integer in vhdl

If one driver for an integer signal is 1, another driver is 2 what integer output would you expect the output to be?
If there are three drivers of the integer, 200, 999 and -1, what integer output would you expect the output to be?

Think about it. Post your answer. Then someone can help

Kevin Jennings

 

[chaitanyapraveen]

I think an unknown value may come

 

[K-J]

I think an unknown value may come

Integers are 0, 1, 2, ... (as well as the negative counterparts). There are no 'unknown' integers.

Type std_logic has 'unknowns', because type std_logic has a predefined set of nine values one of which is used to indicate 'uninitialized', another for 'unknown', etc. This type has a resolution function where you feed it a list of values that the various drivers would like to drive a signal to and it will output the 'resolved' value. While any type 'can' have a resolution function, most do not. Integers have no such 'resolved' function. To create such a function, one would have to answer the questions that I first posed for the general case of 'n' integer drivers of a signal that produce an integer output.

Kevin Jennings