Re: need help with autoinst templates / parameters with (x)emacs & verilog mode

[weber]

On Jun 21, 3:57 pm, unfrostedpoptart <address@hidden> wrote:
> Hi all.
>
> I have a question about using (x)emacs verilog-mode. Specifically, I'm
> trying to use AUTOINST with templates on a module that has
> parametrized port widths.  If I get this working, it will save me an
> immense amount of typing (and correcting)! The template works, but it
> doesn't seem to pick up the parameter value from the instantiation.
>
> Here's my sub module (actually, just the ports, which is all that
> matters):
>
> module  testmux();
>    # (parameter WIDTH = 32)
>    (
>     input wire [2:0]     /* synopsys enum cur_info */ sel,
>     input wire [WIDTH-1:0] a, b, c,
>     output reg [WIDTH-1:0] out
>     );
> endmodule // testmux
>
> Here's the module that instantiates it:
>
> module  top_test();
>
>    /*AUTOWIRE*/
>
>    /* testmux AUTO_TEMPLATE "testmux_\(.*\)" (
>     .a (@_a[]),
>     .b (@_b[]),
>     .c (@_c[]),
>     .out (@[]),
>     );
>     */
>
>    testmux #(.WIDTH(16)) testmux_boo (/*AUTOINST*/);
>
>    testmux  testmux_defaultwidth (/*AUTOINST*/);
>
> endmodule // top_test
>
> When I expand autos, it becomes this:
>
> module  top_test();
>
>    /*AUTOWIRE*/
>    // Beginning of automatic wires (for undeclared instantiated-module
> outputs)
>    wire [WIDTH-1:0]     boo;                    // From testmux_boo of 
> testmux.v
>    wire [WIDTH-1:0]     defaultwidth;           // From testmux_defaultwidth 
> of
> testmux.v
>    // End of automatics
>
>    /* testmux AUTO_TEMPLATE "testmux_\(.*\)" (
>     .a (@_a[]),
>     .b (@_b[]),
>     .c (@_c[]),
>     .out (@[]),
>     );
>     */
>
>    testmux #(.WIDTH(16)) testmux_boo (/*AUTOINST*/
>                                       // Outputs
>                                       .out              (boo[WIDTH-1:0]), // 
> Templated
>                                       // Inputs
>                                       .sel              (sel[2:0]),
>                                       .a                (boo_a[WIDTH-1:0]), 
> // Templated
>                                       .b                (boo_b[WIDTH-1:0]), 
> // Templated
>                                       .c                (boo_c[WIDTH-1:0])); 
> // Templated
>
>    testmux  testmux_defaultwidth (/*AUTOINST*/
>                                   // Outputs
>                                   .out                  
> (defaultwidth[WIDTH-1:0]), // Templated
>                                   // Inputs
>                                   .sel                  (sel[2:0]),
>                                   .a                    
> (defaultwidth_a[WIDTH-1:0]), // Templated
>                                   .b                    
> (defaultwidth_b[WIDTH-1:0]), // Templated
>                                   .c                    
> (defaultwidth_c[WIDTH-1:0])); // Templated
>
> endmodule // top_test
>
> The problem is that it's not substituting the value of the parameter
> WIDTH. I'm so close, yet so far...  Can anyone help with this?
>
> Many thanks in advance!
>
>  David

While I can't help you with your problem, I'm very happy using
yasnippet for saving typing on situations like you described.
http://code.google.com/p/yasnippet/

HTH,
weber