how to convert vhdl binary coding to hex code??

[Altera_Forum]

ai guys... 

 i'm new here... n i have a problem n need ur helps... i already write my vhdl binary code but i don't know how to convert it to hex code... my supervisor wants me to change my certain binary value into hex value...but i dont know what to add so that i can use hex value in my coding.. i really need ur help...  thanks....

[Altera_Forum]

There's a few ways you can do this. 

 1) If your signal is a multiple of 4-bits, then you can use X to indicate hex.  signal d : std_logic_vector(15 downto 0) := X"1234";  2) If your signal is a mixture, you can use a concatenate operator, eg., to set 18-bits to 12345h, you could use  signal d : std_logic_vector(17 downto 0) := "01" & X"2345";  3) Using VHDL-2008 you can use a width specifier  signal d : std_logic_vector(17 downto 0) := 18X"12345";  You can also use conversion functions, eg., to convert an integer value in hex format 16#12345# to std_logic_vector.  Cheers, Dave  edit - fixed the bus widths for you...