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Altera_Forum
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20 years ago

Exception Address Problem

I am new to using NIOS II and have run through a number of examples and tutorials successfully. I have been able to succesfully run the "Hello World" program on the "standard" example for the N...
Altera_Forum's avatar
Altera_Forum
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20 years ago

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originally posted by wbqyy@Apr 14 2006, 02:58 AM

the .exception code should be located in the ext_ram.

and i also met the same question about the print word in the console

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Thank you for your replies. I have checked my objdump file and can see where the exceptions should reside. From what i can see this file looks ok and the exception address falls within valid address space.

I have re-run my program but removed the printf and replaced it with some code that increments a variable. When I run this program in debug mode I cannot get the code to break in main at all when my exception address is set to be located in ext_ram in SOPC Builder. Identical code will break if i set the exception address to be located in SDRAM. This is the only difference between the two builds.

This leads me to believe that it is not a printf problem and is completely down to the exception address being located away from SDRAM.

My code is downloaded through the JTAG port using the USB Blaster and i have put no code into flash. I run or debug the program as NIOS II HARDWARE

Any more tips and advice that you can give would be greatly appreciated. I dont think it should be this difficult!!!

Thanks again

Conners