James Zhou 2000

Using Xilinx ISE 7.1 and 8.1 on the same computer

I have a project that can be built without any issues under Xilinx ISE 7.1. After I installed the newer version - Xilinx ISE 8.1, I found that my bit file does not work on my FPGA any more. I did not bother to debug the problem (honestly, I am not an FPGA engineer and I don’t know how). So I decided to use both ISE 7.1 and ISE 8.1 at the same time. It is interesting that just copying everything under the ISE 7.1 installation directory to anther machine works perfectly. There is one small change that needs to be done: i.e. to change the environment variable from

XILINX=c:\Xilinx_8_1

To

XILINX=c:\Xilinx_7_1

After that, I can go to the bin directory and run the 7.1 version of project navigation to open my old ISE projects.

posted by jameszhou2000 @ 3:19 PM