This example shows how to convert a hexadecimal value to a
std_logic_vector. It is shown in both VHDL '87 (IEEE Std 1076-1987) and VHDL '93 (IEEE Std 1076-1993). For more information on using this example in your project, go to:
- How to Use VHDL Examples
- MAX+PLUS® II Help
LIBRARY ieee; USE ieee.std_logic_1164.ALL; USE ieee.std_logic_arith.ALL; ENTITY hex IS PORT( D : OUT STD_LOGIC_VECTOR(7 DOWNTO 0)); END hex; ARCHITECTURE a OF hex IS BEGIN -- The following line will convert the hex value -- to a STD_LOGIC_VECTOR in VHDL '87. D(7 DOWNTO 0) <= to_stdlogicvector(x"FC"); -- The following line will work in VHDL '93 (the standard allows -- this conversion implicitly). -- D <= x"FC" END a;
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