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 ******************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA Tel. (02) 9674-6495 Fax (02) 9674-8745 Email: john@ampertronics.com.au Website http://www.ampertronics.com.au *Electronic Design * Custom Products * Contract Assembly ******************************************************** -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.472 / Virus Database: 269.8.17/850 - Release Date: 15/06/2007 11:31 AM
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Re: [AVR-Chat] Studio problem, "invalid opcode"
2007-06-16 by John Samperi
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