Re: [myhdl-list] attribute enum_encoding: string;

[Christopher F. <chr...@gm...>]

<snip>
>
> But "ghdl -a ..." still complains unless I patch m_think.vhd to add "attribute enum_encoding: string;"
>
>      tensor(pts/0):~/m_think> diff -u m_think.vhd.orig m_think.vhd
>      --- m_think.vhd.orig    2013-09-05 08:31:50.002627130 -0400
>      +++ m_think.vhd 2013-09-05 08:37:51.481874280 -0400
>      @@ -6,6 +6,7 @@
>
>       package pck_m_think is
>
>      +attribute enum_encoding: string;
>           type t_enum_states_1 is (
>           IDLE,
>           THINK,
>

I don't recall all the VHDL rules here off the top
of my head.  I can test with some synthesis tools
as well and do some research.  It is a small change
that can probably be added, but I have to do some
inquiring before I create a pull-request.

Best I can tell adding

     attribute enum_encoding: string

should be harmless, just an additional attribute
http://quartushelp.altera.com/11.1/mergedProjects/hdl/vhdl/vhdl_file_dir_enum_encoding.htm

Regards,
Chris