We have a custom board prototype with a STM32H730VBT6 (LQFP100 package) and a SPI NOR flash memory.Sadly, this not connected to the OCTOSPIM_P1 port, but to the SPI1_NSS, SPI1_SCK, SPI1_MISO, SPI1_MISO (PA4, PA5, PA6, PB5) port (so, ony 2 data lines ...