AVR-Chat

You can do almost anything on the old ICE200 by conditionally compiling for
various chips.  One thing the old ICE200 does that NONE of the jtag's do is
cycle counting.  So you can measure, directly, how long something takes.
Only the newer PWM modes and  universal serial interface and multiply/divide
stuff isn't emulated.

It is more work, however, so I pretty much just use my JTAG now.  Still, if
it is too long or convoluted to cycle count by hand (something I never worry
about unless it is a super time critical interrupt handler, or, I am trying
to allocate time to various tasks) I'll pull out the old ICE200, retarget
for an 8515 or 8535 (if I need ADC) and directly measure the time needed to
execute.

Cheers!

-----Original Message-----
From: Henry Carl Ott [mailto:carlott@interport.net]
Sent: Sunday, October 03, 2004 9:58 AM
To: AVR-Chat@yahoogroups.com
Subject: Re: [AVR-Chat] Re: Why won't this work?



It's all relative, but I don't think 99.00 USD for an ice-200 is really
'quite costly'. Especially compared to some of the higher end ICEs.
   Admittedly the ice200 is on the out the way out, and jtag / debug wire
are going to be the direction for low cost ICE.

  But, I found the ice-200 an INCREDIBLY useful low cost tool for the older
chips. I might avoid it the for obsolescence issue, but not the cost.

Just my .02

-carl



At 09:46 AM 10/3/2004, you wrote:


>--- In AVR-Chat@yahoogroups.com, "alanganes" <alanganes@c...> wrote:
>
> > ... I'm just a beginner ...
> > I am obviously missing something.
> > Any ideas??
>
>The suggestion has been made that you get an ICE200. I think these
>are quite costly. An alternative would be to switch to an AVR that
>has the JTAG port while you are coming up to speed. You could move
>your code over to your preferred target when you have it working and
>you are more familiar with the AVR line. The advantage of this is
>that JTAG ICE "clones" are available that work with AVR Studio and
>cost around $50.00 US. In fact, I have one in the works which will be
>available for purchase for only $40.00 in the coming week. Please see
>my Web site for details.
>
>Graham.
>http://www.ecrostech.com
>
>
>





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