Re: [casper] Spectrum woes

2016-09-18 Thread Jack Hickish
Hi Michael, Is this actually the optimisation parameter of the xilinx bram block, or an optimisation of a casper block which completely changes some underlying circuit (eg by doing a bunch of fanout control and instantiating multiple small brams instead of one big one)? If the latter, are you

[casper] Spectrum woes

2016-09-18 Thread Michael D'Cruze
Dear all, I've been chasing the cause of some nasty artefacts in my spectra recently. The first turned out to be a known bug in the Xilinx compiler, activated when the BRAM_sharing optimisation in the FFT is checked, however the artefacts I'm seeing since seem to be activated by the RAM blocks

Re: [casper] Spectrum woes

2016-09-18 Thread Jack Hickish
Hi Michael, Hmmm. Can you link the repo you're using and a reference design? Thanks Jack On Sun, 18 Sep 2016 at 15:05 Michael D'Cruze < michael.dcr...@postgrad.manchester.ac.uk> wrote: > Hi Jack, > > > > To implement the change in optimisation I altered the delay_bram init > script. Line 84