I've used 13.4 with success on many versions of 2 projects built around the Spartan 6. Since I am updating some systems, I notice Xilinx is up to version 14.4 as of this date of this post, but the size is very large. So large they have broken it up into 4 chunks to download. I don't wish to download this if nothing has changed for the Spartan 6. So...

Has anyone with experience with Spartan 6 and ISE noticed any performance increase with a certain version of ISE, or is an older version recommended for the Spartan 6 without all the updates for the Zynq line of ICs?

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65Org16:https://github.com/ElEctric-EyE/verilog-6502