Random Number (subtraction process)

[adtun]

Hello everybody.

My problem is;

For Example;

TYPE number_type IS ARRAY (0 to 1) of integer range 0 to 15;
signal number: number_type := (2,8);

signal dx : integer;

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dx <= abs(number(0)-number(1));

There is no problem... I can subtract these two numbers.

But, When I gererate these numbers as a random, It can not subtract numbers, but it can add. I am checking random numbers, they are correct random numbers, there is no problem about random. Subtraction doesnt work.

I dont know it is clear? If no, i can send VHDL codes. Thanks for your help.....

[eilert]

Hi,

what error messages do you get from XST?

Are you using the right types? (Casting or conversion needed somewhere?)

What about the simulation? Does it work there?

Have a nice synthesis

  Eilert

[adtun]

There is no error message.

[adtun]

I think I have found solution. Thank you very much....

[bassman59]

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@adtun wrote:

I think I have found solution. Thank you very much....

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Please enlighten the rest of us.