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Altera_Forum's avatar
Altera_Forum
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12 years ago

arranging numbers with controller and data path

hi all, i got a vhdl assignment and im stuck. i need to create a controller and data path that have 4 numbers as inputs (as well as clk and reset) and i need to arrange them from the smallest to...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

--- Quote Start ---

ok, i understand you.

i will give it a try.

thanks

--- Quote End ---

A possible guide is as follows(not tested) 


when s0 =>     
   if reg1 < reg2 then
       reg1 <= reg2;
       reg2 <= reg1;
   end if;
when s1 =>
   if reg1 < reg3 then
        reg1 <= reg3;
        reg3 <= reg1;
   end if;
when s2 =>
   if reg1 < reg4 then
        reg1 <= reg4;
        reg4 <= reg1;
   end if;
when s3 =>
   if reg2 < reg3 then
        reg2 <= reg3;
        reg3 <= reg2;
   end if;
when s4 =>
   if reg2 < reg4 then
        reg2 <= reg4;
        reg4 <= reg2;
   end if;
when s5 =>
   if reg3 < reg4 then
        reg3 <= reg4;
        reg4 <= reg3;
   end if;