@d0773d, a lot of work if you have not a generic support system / framework that helps with keeping track of this (pages, etc.). You can find conversations of mine related to TFT displays where I was looking into save and restore of display (memory) content to support temporary, regional overwrites... but it is slow - even though @JumJum made it much faster and more recent Espruino and display controller features could be used to accelerate it even more - and memory consuming... understandably.
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.
@d0773d, a lot of work if you have not a generic support system / framework that helps with keeping track of this (pages, etc.). You can find conversations of mine related to TFT displays where I was looking into save and restore of display (memory) content to support temporary, regional overwrites... but it is slow - even though @JumJum made it much faster and more recent Espruino and display controller features could be used to accelerate it even more - and memory consuming... understandably.