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VHDL array of record

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Timo Miettunen

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May 27, 1998, 3:00:00 AM5/27/98

Let's say I have an array of record like this:

type foo_rec is record
a : std_logic;
b : std_logic_vector ( 3 downto 0 );
c : integer range 0 to 7;
end record;

type foo_array is array ( 0 to 5 ) of foo_rec;

constant cf_array : foo_array := ???

how can i initialize the array ?

Thank in advance

Timo

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Timo Miettunen
Design Engineer
Fincitec Oy http://www.fincitec.com
e-mail: timo.mi...@fincitec.fi
Tel: +358-(0)16-2151240
Fax: +358-(0)16-221561
-------------------------------------------------------------------------

Paul J. Menchini

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May 27, 1998, 3:00:00 AM5/27/98

Timo Miettunen (timo.mi...@fincitec.fi) wrote:
: Let's say I have an array of record like this:

: type foo_rec is record
: a : std_logic;
: b : std_logic_vector ( 3 downto 0 );
: c : integer range 0 to 7;
: end record;

: type foo_array is array ( 0 to 5 ) of foo_rec;

: constant cf_array : foo_array := ???

: how can i initialize the array ?

You use an aggregate of six elements, each of which is a nested
aggregate of three elements, one each for a, b, and c. The b element
is, in turn, either a nested aggregate or a string:

constant cf_array: foo_array := (
('U', "UUUU", 0),
('X', (others => '0'), 5),
(a => '0', b => "01XZ", c => 2),
others => ('W', (2 => 'H', others => '-'), 3)
);

Named or positional association may be used for any of the aggregate
elements.

Hope this helps,

Paul

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