[Bdi4emc-help] RE: Bdi4emc-help Digest, Vol 5, Issue 2

Tue Apr 4 06:20:45 CEST 2006

Paul,

Thanks for the help.  The motherboard is an Intel N440BX, it does have an
onboard video card which I think is a Cirrus 4680?  The processor is 600Mhz
P3 and I have 256Mb of ram  

I increased the period to .00005 and was able to run the default generic.ini
file, so I was quite pleased with the progress.  When I set the period back
to .000022 I froze again so that appears to be the problem.

One thing I thought was interesting is that I had installed a vital systems
servo card (the 4-Axis version) and using the vital.ini, I was able to run
with the period set to .000022 without any problems.  I guess this has
something to do with the way the card is managing certain processes that
would normally be handled by the motherboard?  

Anyway,I'm off to hook up some motors to see if I can make something move.
I'll report back.

Thanks Again,

Craig

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Message: 2
Date: Sun, 2 Apr 2006 21:15:09 +0100
From: Paul <bdi4emc at bulldoghome.com>
Subject: Re: [Bdi4emc-help] RE: Bdi4emc-help Digest, Vol 5, Issue 1
To: bdi4emc-help at lists.ourproject.org
Message-ID: <200604022115.09709.bdi4emc at bulldoghome.com>
Content-Type: text/plain;  charset="iso-8859-1"

Hi Craig

On Sunday 02 April 2006 19:38, Craigg Gadd wrote:
> I'm very new to Linux but managed to successfully install BDI 4.38 a few
> days ago.  I seem to be having trouble launching EMC however.  The problem
> is that the system hangs when TK starts to load.  I'm saying this based on
> what I'm reading on the script window as EMC is loading.
>
> Once the system is hung, I'm unable to recover and must reboot.  I'll
> mention that I don't seem to be having any other problems with the
> installed applications so I believe the problem relates to EMC and Tk.

This sounds very much like PERIOD being set too low for your computer. This 
parameter is defined in /usr/local/emc/emc.ini, or generic.ini, depending on

which run script you use.. The value is set at a fairly conservative
0.000025 
and should work with most 400MHz and faster computers. Even a P266 will run,

but performance would be quite sluggish...

There are one or two motherboards out there that just can not provide
adequate 
performance due to inherant design problems - Generally, anything that uses 
shared main memory for onboard video, certain i845/855 chipsets, and Geode 
processors all have "issues".

You could try increasing PERIOD to 0.00005 and see if avoids the freezing. 
Some additional information about your computer (make/model of motherboard, 
graphics card, etc) would help..

Regards, Paul.

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End of Bdi4emc-help Digest, Vol 5, Issue 2
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