Re: Xilinx Platform Cable USB protocol specifications and/or open-source firmware replacement

Felix Bertram wrote:
BUT: Often my world does not look like this. I have setups that are mixed with chips from other manufacturers. I want to access all of them. I want to do some tests, toggle a few pins, see what happens. And now the pain begins, as I cannot.

The iMPACT software works with other devices in the chain by allowing you to
specify a BSDL file for the device when it doesn't recognize it. The iMPACT
software also allows you to generate arbitrary JTAG sequences in order to do
anything that you want to do. If you want to generate a program to improve
your ability to do this then run iMPACT in batch/command line mode and have
your program control iMPACT.

I would also suggest using a product like Universal Scan (http://www.universalscan.com/)
I've not used it personally, but I did have a conversation with the principal developer
a few years ago and it seems like a nice light weight tool to do exactly what you
want to do. I think that it might be Windows only though.

Or, if the pins that you want to toggle are from a Xilinx device, then I would
suggest using ChipScope Pro with a VIO (Virtual I/O) core attached to the pins for
an even simpler product and it includes FPGA configuration capabilities. ChipScope Pro
does work on Linux.

Ed McGettigan
--
Xilinx Inc.
.

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