Re: Verilog-AMS BNF Section 6.5 - analog_event_expressions

Hi Geoffrey,
But, when I trace event_expression, it never makes it into the analog domain. I 
cant see where analog_event_expression makes it into the expression or 
analog_expression item. But I will search again, maybe I am missing something.

I think we had analog_event_expression to separate cross/timer/above (which are 
valid in digital) from initial_step and final_step (which are only valid in 
analog. I guess we can do it semantically, but it seems to be easier to 
restrict it via the syntax itself.

Cheers...
Dave

Geoffrey.Coram wrote:
> analog_event_functions are part of the BNF for "event_expression"
> 
> I'd have to look deeper to understand why analog_event_expression
> is still a separate syntax item, rather than being merged and
> having the restrictions expressed semantically.
> 
> -Geoffrey
> 
> 
> 
> David Miller wrote:
>> Hi Graham,
>> In section 6.5 of the BNF, you have added analog_event_functions for 
>> cross, timer, and above.
>> However you don't have that rule in analog_event_expression.
>>
>> In analog_event_expression I think there should be a rule for
>>     | analog_event_functions
>>
>> Cheers...
>> Dave
>>
> 

-- 
=====================================
-- David Miller
-- Design Technology (Austin)
-- Freescale Semiconductor
-- Ph : 512 996-7377 Fax: x7755
=====================================

-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.