Re: [casper] Mystery timing errors

2015-08-30 Thread Jack Hickish
Hi Michael, As one of the Xilinx timing closure documents helpfully articulates, it's very difficult to give specific recipes for solving timing problems, other than reading the timing report, looking at things in PlanAhead/FPGA Editor, iterating compiles and developing some intuition. That

[casper] Mystery timing errors

2015-08-30 Thread Michael D'Cruze
Hi everyone, I'm having quite a lot of problems getting a particular design to compile, XPS consistently reporting timing errors. The design is a wideband spectrometer, somewhat similar to the tutorial 3 design. I'm running an iADC at 1024 MHz, and the FPGA at 256 MHz. It is a two-polarisation