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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.
@tve
Save and restore is supported. I thing I provided the flash bindings, but perhaps not. The esp8266 memory map is pretty complicated, it's documented in the board docs (which Gordon hasn't put onto the web site yet). So it's not just a matter of an "end" & "size". If your module has >1MB of flash then anything above that line is free game.