Keyword: ALL

The all keyword is used in the following ways:

(1) in a use statement, to make all the items in a package visible,

(2) in an attribute specification, to refer to all the names in a name class,

(3) in a configuration specification (for) statement, to refer to all instances of a component, and

(4) in a signal disconnection specification, to refer to all signal drivers of the same type.

Examples

use ieee_std_logic_1164.all;

...

for DUT: compare use entity work.compare(compare1);

LRM

5.1, 5.2, 5.3