Downloaded MDK5.38a and installed on Windows 11.
Have "NuMicro ARM9 DeviceDatabase for Keil 1.02.exe", run and finished. Can't find any Icons nor any change to "start menu", except an uninstall.
No devices are shown in drop-down box/device tree.
Downloaded legacy mdk 5.25 executed the file.
Then a bunch of devices, but none is Arm9.
Trying to import as Zip-file in "Pack installer" fails due to no .pstd-file, which is not surprising, as this is not described as procedure, but just to inform, I have tried a little bit of everything. Also running installations with "admin"-rights, which was required for License installation, so expected sort of owner-problems.
I am of course new to Keil µVision.
The N9H20 device is not listed here:https://www.keil.com/dd/chips/nuvoton/arm.htm
You should be able to make a generic Arm9E-S project by selecting that processor from the Arm list. You will need to provide all startup code, scatterloading files etc. Have Nuvoton provided this?