Nios® V/II Embedded Design Suite (EDS)
Support for Embedded Development Tools, Processors (SoCs and Nios® V/II processor), Embedded Development Suites (EDSs), Boot and Configuration, Operating Systems, C and C++
Announcements
FPGA community forums and blogs on community.intel.com are migrating to the new Altera Community and are read-only. For urgent support needs during this transition, please visit the FPGA Design Resources page or contact an Altera Authorized Distributor.
12748 Discussions

Invalid instruction exception?

Altera_Forum
Honored Contributor II
‎06-23-2010 10:46 AM
1,024 Views

We are running some code on a NIOS2/CycloneII platform. 

 

Somehow the code is telling the processor to execute some instructions that is outside the code segment. Not sure yet if this is a hardware or software issue. 

 

I can break into the debugger and examine registers, but the ra register (return address?) is 0xFFFFFFFF. 

 

Is there anyway to set a breakpoint if the pc is outside a certain range?  

 

Is there a way to break into the debugger when an invalid instruction is executed?
0 Kudos

Link Copied

0 Replies
Reply

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.