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Altera_Forum's avatar
Altera_Forum
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13 years ago

Generic Array

What's the best way to achieve the following statement, when the user_address size depends on a generic value? generic ( addr_length: integer; ) signal addr_enable: std_logic; ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

or you could use the AND_REDUCE function of the std_logic_misc array:

addr_enable <= '0' when and_reduce(user_address) = '1' else '1';

or the fact that the specified function is just reduced very simply:

addr_enable <= nand_reduce(user_address);

or even simpler in VHDL 2008:

addr_enable <= nand user_address;