Hello Casperites,
ROACH2, MATLAB 2012a (I think), ISE 14.7, Ubuntu 14.04 LTS I am working on compiling firmware without timing errors. More like ignoring static configuration register timing errors. Any rate, I have been pulling my design into PlanAhead successfully and applying some DSP slice constraints with some success. When it comes time to generating a bof file, I used the mkbof_64 executable located in the implementation directory that simulink creates. This seems to work fine. The problem arises when I move the generated bof file to my ROACH2 and try to program the FPGA. I upload the bof via python and call the progdev() command through python. This fails without anything meaningful in python. However when watching the serial output from the PPC, I get this: /usr/bof # roach open config called rdev gpio preconfig doneProgrammed fpga device id = ffffffff Attempted to program incorrect configuration onto Virtex6 FPGAroach release config called I am not sure what might be happening here. I was wondering if anyone else had tried this or ran into such a problem before. Other notes and ideas: I could be using the wrong mkbof, but when a design meets timing the casper_xps gui script makes a bof that works. So, maybe the script uses a different mkbof_64. There is another mkbof executable, but that one does not seem to function. I am assuming it is the 32 bit version, which would mean I would need a bunch of 32 bit libraries. There are options in the PlanAhead bitfile generation and I could have those wrong. This could be very likely. I could alternatively use the system.ucf file updated by PlanAhead through the casper_xps process in matlab. However this would drop my control of the PAR which seems to have a strong influence on how well it meets timing. Ironically, timing driven placement gets the far worse timing results. As far as what it running on the PPC and what katcp library I am using, That is a very good question which I truly don't know the answer to. Any other ideas or solutions? Johnathon Gard National Institute of Standards and Technology
