[myhdl-list] Re: signals in $to_myhdl can't exceed 64?

[Jan D. <ja...@ja...>]

Arnold wrote:
> Jan,
> 
> I got the error message said that signals in $to_myhdl can't exceed 64 when
> using MyHDL as HVL in my project. Could you give me a clue how to solve this
> issue if my project had to have more than 64 signals monitored by MyHDL?

Yes, you'll have to increase some constants in the C code of the PLI
module and recompile. These constants are macro's at the top of the
code, so you only have to change one or two lines.

Look for these definitions:

#define MAXLINE 4096
#define MAXWIDTH 10
#define MAXARGS 64

MAXARGS is the maximum number of arguments supported
by the PLI module. Change it to the value you need.

Depending on how large MAXARGS is, you may want to
increase MAXLINE also. MAXLINE is the width of a line
containing all signal names in a $to_myhdl or
$from_myhdl call, plus some overhead (e.g. 8 chars
per argument). Just make it large enough. (There is
currently no check on this, this needs to be added
in the future.)

Jan

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