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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@fanoush
Yes to all. I think we already said the same thing 3 times in slightly different ways. And each time I fail to see how it could be interpreted in any other way :-)
On the other hand none of you explained how do you plan to use the memory, what kind of data will be there. Both external ram and flash will be slower than the internal one so just joining them (or even just using the external one only) will make things to run slower and use more power.
As for STM32L496GDISCOVERY when quickly googling psram I just found this unanswered topic https://community.st.com/t5/stm32-mcus-products/stm32l496g-discovery-psram-problem/td-p/355263 and then Zephyr support info for this board https://docs.zephyrproject.org/latest/boards/st/stm32l496g_disco/doc/index.html with psram not supported and then this https://stackoverflow.com/questions/57274543/fmc-slower-than-qspi-on-stm32h7