concatenation N vectors

[zlotawy]

Hi,
I'd like to use concatenation in VHDL when number of vectors is unknown. For
example:

entity QAZ is
port (

P_I_ADC : In MyArray(NUMBER-1 downto 0);
end QAZ ;

and I have multiplexer.

constant N :Natural;

Output of multiplekser is concatenation two, or three or four or N vectors
of input Array.

Could You help me?

Thanks,
zlotawy

 

[scottcarl]

You can't do it. You cannot have an entity declared that has a variable length of port sizes or std_logic_vector lengths. Those things have to be defined explicitly because this is hardware, not software. You'll have to post the maximum posssible length of your array and then do a multiplex with all the possibilities.

Scott C