I recently upgraded my CASPER tools to the latest and greatest versions (Xilinx 14.4 and Matlab 2012b) as well as the latest SKA-SA mlib_devel libraries. As a sanity check I downloaded and recompiled tutorial 3 from here:

https://github.com/casper-astro/tutorials_devel/blob/master/tut3/tut3.slx

I had to replace the even and odd BRAM blocks, but other than that it appeared to compile just fine. However when I run the bof file I read all zeros back from the even and odd registers. If I keep everything else constant and just change the mlib_devel library to this branch (http://astro.berkeley.edu/~davidm/mlib_devel.git/) I get a reasonable spectrum out but with a peak that corresponds to the FPGA clock frequency. If I use the precompiled bof file here (https://github.com/casper-astro/tutorials_devel/blob/master/tut3/tut3.bof) the FPGA clock frequency peak disappears.

Can I get some assistance here? First off, it appears that the lastest ska_sa libraries aren't compatible with the latest tutorial3 files. Second does anyone know why I'd have clock frequency peaks from one compile to the next?

Thanks,

Jason Castro
NRAO

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