programming Cyclone III

I've never seen one. We've typically used a CPU or MPU when using pasive serial mode, so we tended to just played with it, until we got it to work.

One gotcha in some of the families is the 2 extra DCLKS clocks required from CONFIG_DONE to USER Mode start. So that's where several people get stuck.

Pete

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I was wondering if a simulation model excised for the Cyclone III device being programmed via passive serial. I am using the Cyclone III and using the MAX II device to auto program the FPGA from flash. I am trying to simulate my MAX II design, I found a model for the flash, but I need a model for the configuration pins on the FPGA.

If you know where one exists, I would greatly appreciate it.

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Here's a pretty simple one that I use. My PS/FPP controller has a programmable byte-count, so I just make it smaller for simulation. If you've hard-coded your controller byte-count, then you can change the generic on the model. The model uses an enumeration so that you can view the configuration stages.

Cheers,

Dave

Thank you for the replies. We are trying to use the PFL mega function in the MAX II device. I will use the file provided to help in our debugging process. Thanks again.

Have you had any experience using the PFL to program the FPGA in passive serial mode? I thought it would just work, but we seem to be having issues. The file is stored in flash.

Thanks!

Angela

Hi Angela,

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Have you had any experience using the PFL to program the FPGA in passive serial mode? I thought it would just work, but we seem to be having issues. The file is stored in flash.

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When PFL was introduced, it could not be targeted to anything but MAX II, and it did not have a simulation model, so I wrote my own controller.

If PFL has a simulation model now, then I'd recommend reviewing the simulation to try to determine the issue.

Cheers,

Dave

That is what we are doing now. Thanks for the help!

Angela