如何将位文件从Spartan 3A转换为Spartan 3AN

你好，
我有一个最初使用Spartan 3A入门套件开发板实现的应用程序。
我有FPGA的位文件，一切都按设计正常运行。
最近我们需要构建更多的应用程序，但是我们无法购买原始的Spartan 3A套件（不再有库存），而是购买了Spartan 3AN套件。
我知道通过重新运行原始源代码并将目标设备从Spartan 3A更改为Spartan 3AN，我可以获得适合Spartan 3AN的位文件。
但有没有一种更简单的方法可以将原始的3A位文件直接转换为3AN设备，而无需重新运行整个实现流程？
谢谢，
德里克刘易斯



以下为原文

Hello,

I have an application that was originally implemented using a Spartan 3A Starter Kit development board. I have the bit files for the FPGA and everything has been operating correctly as designed. Recently we needed to build some more of the applications, but we were unable to buy the original Spartan 3A kits (not in stock anymore), but got Spartan 3AN kits instead.

I know that by rerunning the original source code and changing the target device from Spartan 3A to Spartan 3AN, I can get the bitfile suitable for Spartan 3AN. But is there an easier method which can translate the original 3A bitfile directly to the 3AN device, without rerunning the entire implementation flow ?

Thanks,

Derric Lewis