Hi Gabe,
Thanks for your clarification. I found the code tree that Simple CPU is using for atomic &timing mode (src/cpu/simple). The simple mode is completely using different fetch-decode function as contrast to O3-CPU implementation (Simple CPU is using pre-execute function for decode interface). Actually I was looking at the O3 cpu implementation and so was my query earlier. And it seems from the fetch logic in O3/fetch_impl.hh that fetch interface logic with predecoder is broken and so X86_FS is not working for O3CPU mode. Thanks for all your help. Thanks and Regards, Dibakar
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