Q: Is aay hardware modification required?
A: No need to modify on N9H20 demo board.
Q: Where is the N9H20 board reference guide?
A: Nuvoton official website: https://www.nuvoton.com/products/microp ... ware&tab=2
Q: Any software compiler change setting required?
N9H20 mounted a Winbond SPI flash with 16MBytes, you can read its ID by BSP SPI sample code, the path is in \N9H20_emWin_NonOS-master\BSP\SampleCode\SPI\SPI_Flash
BSP download link: https://www.nuvoton.com/products/microp ... ware&tab=2
The path of SPI flash support list is in \N9H20_emWin_NonOS-master\Documents\N9H2X_SPI_Flash_Support_List.pdf