Re: shunt trouble

On Thursday 30 December 2010, [email protected] 
wrote:
> I tested it on different versions with cygwin on XP. One of
> them was   gnucap-2009-11-10.
> It seems that gnucap doesn't simulate the whole circuit when
> I connect  two logic gates with

> If I don't use Vshunt it works but what's the matter ?

Sorry about the delay .. dealing with a crisis totally unrelated 
to gnucap ..


There is a bug, ...  This circuit works in logic mode, and 
apparently there is a bug in the "connectmodule" code, which is 
planned for an upgrade anyway to use plugins.

The U devices are logic devices, operating in logic mode, as 
logic simulators work.  Voltages are created on printout.  If 
you probe "logic" at the nodes, you will see a code that really 
indicates what is happening.  The bug is that it didn't properly 
initialize and got stuck in a "falling" state, which was never 
propagated, after transitioning from the "unknown" state.

Since the floating device is an analog device, that implies 
automatic insertion of connectmodules at both ends.  The bug is 
in one of those.

That is as far as I got.

It hasn't been tested adequately, because I haven't looked at it 
years, and have been planning to convert it to plugins, which 
requires somewhat of a rewrite anyway.

I don't have a timetable for fixing it. 

al.