PPT 슬라이드
The Concatenation operator (&) allows flexible grouping of scalars and arrays into larger arrays.
signal A_vec, B_vec : std_logic_vector ( 7 downto 0 ) ; signal Z_vec : std_logic_vector ( 15 downto 0 ) ; signal A_bit, B_bit, C_bit, D_bit : std_logic ; signal X_vec : std_logic_vector ( 2 downto 0 ) ; signal Y_vec : std_logic_vector ( 8 downto 0 ) ;
X_vec <= A_bit & B_bit & C_bit ;
This type of assignment uses positional association.