Platform Studio

Specifying the JTAG Chain

If your embedded system is a submodule in a top-level data files design, use the iMPACT tool in Project Navigator to connect to your target FPGA and download the bitstream. Otherwise, Xilinx® Platform Studio (XPS) can download the download.bit file onto the target board using the Xilinx® iMPACT tool in batch mode. XPS uses the file etc/download.cmd for downloading the bitstream.

The following is an example of a download.cmd file for a board where the FPGA is the second device in the chain:

setMode -bscan

setCable -p auto

identify

assignfile -p 2 -file implementation/download.bit

program -p 2

quit

If the JTAG Chain includes non-Xilinx devices, the BSDL files for those devices can be specified using the following syntax:

addDevice -p 2 -file etc/xc18v04_vq44.bsd

assignfile -p 2 -file etc/xc18v04_vq44.bsd

Note -p specifies the position of the device in the JTAG Chain.

For additional information on the command line option used for iMPACT, refer to the Help system for iMPACT.

What to Do Next

Downloading Bitstreams to an FPGA