Why does the Intel® Quartus® Prime Pro Edition Software v20.2 prompts an internal error when generating the GPIO IBIS model with Intel® Stratix® 10 DX devices?

Description

Due to a problem with the Intel® Quartus® Prime Pro Edition Software v20.2 and earlier, you may see an internal error is prompted when generating the GPIO IBIS model.
You may observe an internal error message: Unknown I/O cell name.
This problem only happens on Intel® Stratix® 10 DX devices.

Resolution

To work around this problem, download and install the following patch for the  Intel® Quartus® Prime Pro Edition Software v20.2:

• Version 20.2 patch 0.39 for Windows (.exe)
• Version 20.2 patch 0.39 for Linux (.run)
• Readme for the Intel® Quartus® Prime Pro Edition Software v20.2 patch 0.39 (.txt)

Please contact Intel Support if you need patches for earlier versions.

This problem is fixed starting with the Intel® Quartus® Prime Pro Edition Software v20.3.