Re: Probably stupid problem...

[Steven Rubin]

> I'm a first time user of Electric and made a very simple circuit with
> three JK FFs. I connected the JKs of the first to PWR, and the
> JKs of the second to the Q of the first. The JKs of the third
> go to an AND of Q0 and Q1. I believe this is the standard connection
> for a sync counter. Clocks are common.
>
> When simulating though, only the first JK acts normally (div 2).
>
> I've tried to connect the PRESET and CLR to 1 and 0 etc. I guess I'm
> missing something very basic here...

The implementation of FlipFlops is not complete in the built-in ALS 
simulator.  This is why some of them don't respond under simulation.  Check 
the VHDL and the netlist code to see more.

> I've installed IRSIM, and find I can't define a clock signal? How can I
> excite a circuit?

There is an IRSIM "c" command that cycles a particular signal up and 
down.  You can enter this from the "command line" or by placing it into a 
"cmd" file.  Alternatively, you can toggle things by hand (the hard way).

> Also, the time scale in IRSIM is very short - ns or thereabouts. How to change
> that? The horizontal scrollbar on the time bar only changes to the left,
> it's right side is locked in the middle of the range and doesn't move.

You can fix it in the code, or you can simply zoom out once the window 
appears.  Use the same commands to zoom the waveform viewer as you do for 
circuits (Window/Zoom Out).

> When loading a library, by default the home directory appears. If one tries
> to change directory by modifying the path, without a filename, Electric
> hangs...

No, don't change the path field.  That tells Electric where to find its 
needed library files.  There should be some UNIX way to set the default 
directory, but I don't know what it is.

     -Steven Rubin