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entity E is
end entity;
architecture A of E is
-- array with unconstrained array element type
type A is array(natural range <>) of bit_vector;
-- partially constrained array -> constrained inner array (element)
subtype P1 is A(open)(7 downto 0);
-- partially constrained array -> constrained outer array (vector)
subtype P2 is A(15 downto 0)(open);
signal S1 : P1(15 downto 0); -- finally constraining the vector size
signal S2 : P2(open)(7 downto 0); -- finally constraining the element size line 14
begin
end architecture;
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