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Re: [AVR-Chat] Studio problem, "invalid opcode"

2007-06-16 by John Samperi

At 06:42 AM 17/06/2007, you wrote:
>I get "invalid opcode 0xFFFF at address 0x00f020
>The address is always the same!

What is PHYSICALLY there? Have you loaded the code into the simulator
or used other debugging tools to have a look at that location?

Included the wrong interrupt vectors (SOMEONE did this a while ago)?
No memory at 0x00f020? Which chip are you using?

You do know that it will be something silly and you will kick
yourself when you find it :-)

A few days ago I spend about half an hour trying to figure out
why my Dragon was acting funny, I could not read porta no matter
what I did....well it turned out that I had changed debugging
mode from Dragon to simulator and what I was looking was not
the physical port at all.... :-[

Regards

John Samperi

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Tel. (02) 9674-6495       Fax (02) 9674-8745
Email: john@ampertronics.com.au
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