Compound types

• array_type_definition
• record_type_definition

mt_word is declared as a bit vector of the width 32, with the indices rising from left to right.

TYPE my_word IS ARRAY ( 0 TO 31 )
      OF bit ;

data_in is declared as a vector of the type five_level_logic and the width 8, with the indices descending from left to right.

TYPE data_in IS ARRAY ( 7 DOWNTO 0 )
      OF five_level_logic 

memory is declared as a vector of the type my_word with an arbitrary width (<>). Direction and maximum width is determined by the type integer .

TYPE memory IS ARRAY (integer
      RANGE <>) OF my_word ;

t is declared as a vector of the type element with the width 1+( max - min ) [type positive] .

TYPE t IS ARRAY
   (positive RANGE min TO max)
                    OF element;

date is declared as Record which consists of the elements day , month and year .

TYPE date IS
   RECORD
      day   : integer RANGE 1 TO 31;
      month : month_name;
      year  : integer RANGE 0 TO 2100;
   END RECORD ;