I am using ISE 5.2.02i and I am not able to target the XC3S4000 or XC3S5000 devices. Where can I get software support files for these parts?
This Answer does not apply to ISE versions 6.1 or later - these devices are automatically included in these versions.
These files contain device support for targeting Spartan-3 XC3S4000 and XC3S5000 in ISE 5.2.03i.
Unzip the files from your Xilinx installation directory to preserve the correct directory structure relative to your %Xilinx directory:
You must first unzip your download using the command gzip -d s3_4_5k.tar.gz before untarring, and then untar the files from your Xilinx installation directory to preserve the correct directory structure relative to your $Xilinx directory:
After installing these files you must re-apply the 5.2i Service Pack 3.