Configuration

configuration identifier of
     entity _name is
configuration_declarative_part
 block_configuration
end [ configuration ]
        [ configuration _simple_name ] ;

• basic_identifier
• extended_identifier

• simple_name
• operator_symbol
• selected_name
• indexed_name
• slice_name
• attribute_name

{ configuration_declarative_item }

for block_specification
{ use_clause }
{ configuration_item }
end for ;

• identifier

Example of a default-configuration of a testbench which uses the corresponding analysed object for the architecture arch_of_testbench .

CONFIGURATION cfg OF testbench IS
   FOR arch_of_testbench
   END FOR ;
END cfg ;

The libraries vendor and mylib are published.

For the entity example the whole content of the library mylib is published, and in its architecture structural the entity alu_ver_2 is used with the architecture beh from the library mylib for the instance ALU with the label ALU1 . For the instances of MUX, labelled mux1 , mux2 and mux3, the entity mux12345 with the architecture rtl from the library vendor is used.

For all instances of add the defaults are used.

LIBRARY vendor, mylib ;
CONFIGURATION cfg_of_ex OF example IS
  USE mylib.ALL ;
  FOR structural
   FOR ALU1: ALU
    USE ENTITY mylib.alu_ver_2(beh);
   END FOR ;
   FOR mux1, mux2, mux3: MUX
     USE ENTITY vendor.mux12345(rtl);
   END FOR ;
   FOR ALL : add
   END FOR ;
  END FOR ;
END cfg_of_ex ;