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Re: [avr-gcc-list] Software JTAGICE using simulavr / limited simulavr IC

From: Theodore A. Roth
Subject: Re: [avr-gcc-list] Software JTAGICE using simulavr / limited simulavr ICE
Date: Fri, 22 Aug 2003 16:04:59 -0700 (PDT)

On Fri, 22 Aug 2003, Mike Hudson wrote:

> Just to clarify, the final goal is to allow users to connect the JTAG
> port on the AVR directly to the parallel port of their development PC,
> not to emulate a JTAGICE with a separate PC. Ideally this would be
> packaged as a single executable/script that the developer runs before
> their other devel tools, much like they power on the actual JTAGICE.
> AVR Studio / AVARICE would connect to an emulated serial port on the
> development host, interfacing with a simulated JTAGICE, connected to a
> physical AVR though the parallel port, all on the same machine.
> As for the use of simulavr as an ICE - this is mainly to provide
> something physical for those learning AVRs to play with, such as
> switches, LEDs, and motors.
> It's not intended to be more efficient or to be used in actual
> development, rather it's to allow a teacher to tape together two
> servos, a LED and a phototransistor and teach a class how to make this
> 'robot' follow a line. It's also to allow those learning AVRs
> independently to build something physical without having to buy any
> hardware.

Ok, that's the clarification that I was looking for.

I don't see why this couldn't be done.

It could also be quite useful for rev-eng the on-chip debug,
especially with the vcd disp tool that is in simulavr cvs right now...

Ted Roth

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