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Altera_Forum's avatar
Altera_Forum
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16 years ago

comparator

i need to do Greater or equal than Less or Equal than not equal but it is not working with me could you check this code i have done greater or equal than but it is not workin but a...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

This is rather basic knowledge, but I'll humour you.

You might invest in a few good books on VHDL, I suggest you get a copy of:

Circuit Design with VHDL

by Volnei A. Pedroni

ISBN 978-0-262-16224-1 

process( Clk ) 
 begin
 if rising_edge( Clk ) then
IF a > b THEN
	compare <= "010110";
ELSIF a < b THEN
	compare <= "001101";
ELSIF a = b THEN
	compare <= "100011";
ELSE
	compare <= "111111";
END IF;
end if ;
END PROCESS;