[Ktechlab-devel] Bug in D Flip flop component

[David Saxton]

I probably should have been more specific with the problems with the patch, as 
alluded to in the previous email in this thread.

If the clock and input are changed simulatenously, then ktechlab makes no 
guarantees as to whether "ECDFlipFlop::inputChanged" or 
"ECDFlipFlop::clockChanged" is called first. The behaviour of the patch, 
however, depends on which of these functions is called first.

On Sunday 11 Sep 2005 19:13, Fredy Yanardi wrote:
> Hi David,
>
> Today I discovered a bug in D Flip Flop. It only remembers current D
> input, if clock and input are changed simultaneously, then the flip
> flop will produce wrong Q output. Simple and obvious case is when you
> create a Ring Counter.
>
> I don't know whether this has been fixed or not in the latest svn,
> because I try to update my source but it gives me "svn: PROPFIND of
> '/ktechlab': could not connect to server
> (https://svn.fadedminds.com)". If this hasn't been fixed I've made a
> small patch for this. I haven't tested other flip flop types whether
> they have same problem or not.
>
> Regards,
>
> Fredy Yanardi