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Extended set extension and Indexed Addressing

 
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mfeinstein



Joined: 05 Jul 2012
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Extended set extension and Indexed Addressing
PostPosted: Wed Nov 14, 2012 7:30 pm     Reply with quote
Hi,
I am wondering, are there any "pros and cons" regarding the "Extended set extension and Indexed Addressing"?
What are the reasons to leave it enabled or disabled?
Thanks!
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Wed Nov 14, 2012 7:49 pm     Reply with quote
Compile a program and look at the warnings:
Quote:
>>> Warning 227 "PCH_Test.c" Line 85(1,1): Feature not supported XINST
mfeinstein



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PostPosted: Wed Nov 14, 2012 8:33 pm     Reply with quote
Sorry PCM Programmer, I did not understand your answer...could you make it more clear please?
PCM programmer



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PostPosted: Wed Nov 14, 2012 8:50 pm     Reply with quote
Read this thread and the link in it:
http://www.ccsinfo.com/forum/viewtopic.php?t=49258
mfeinstein



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PostPosted: Wed Nov 14, 2012 9:21 pm     Reply with quote
So why they give you the option to enable it, if the compiler doesnt support it?
Ttelmah



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PostPosted: Thu Nov 15, 2012 2:10 am     Reply with quote
Because you could (for instance), write a CCS bootloader (being very careful what instructions you use, to prevent this causing problems), which then loads a main program written with something else, which requires XINST.

Best Wishes
mfeinstein



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PostPosted: Thu Nov 15, 2012 9:35 am     Reply with quote
Oh..now it makes sense ;)
Thanks Ttelmah
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