Re: [myhdl-list] Driving constants

[Jan L. <jan...@et...>]

Am 04.09.2011 um 23:37 schrieb Sébastien Bourdeauducq:

> On 09/04/2011 10:35 PM, Jan Langer wrote:
>> Could you just use a clock everywhere?
>
> Huh? How is that related?
>
> There is indeed a clock everywhere - the whole generated circuit is
> synchronous - but I still need (synchronous) strobe and acknowledgment
> signals to control the flow of data. This practice is very common in
> digital design, e.g. Wishbone and many other interconnect buses have
> similar systems.


As I understood, you need a always_comb block that just drives a  
constant. And since your sensitivity list is empty it does not work.  
So my idea was to put the clock edge into the sensitivity list and you  
get a clocked process that drives a constant, which in your case will  
get optimized away and behave as a normal constant.

-- 
Jan Langer
Professorship Circuit and System Design
Chemnitz University of Technology, Reichenhainer Str. 70, 09126 Chemnitz
Phone: +49 37209 688001, Fax: +49 371 531-833158, Mobile: +49 162  
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http://www.tu-chemnitz.de/etit/sse