Docedison I don't want to use that RAM as additional memory. I've though about doing this but then it will draw weird things on the display 
Indeed I could store in variables what I write to the display, but then it require up to 32024016 bits, that is 150 kB... Hence my need to read data back. Hopefully, I won't constantly read from that RAM, only when needed.
And I already have code to read GDDRAM, thanks to the ArduCam library author(s), the only thing missing is an useable RD pin
floresta:
To avoid unnecessarily tying up an Arduino I/O pin for a capability that is rarely used.
I could agree but that shield is blocking like 6 unused pins on Arduino's 36 pins connector, so they could have used them anyway, also they wasted Arduino's pins 0 and 1, the F_* pins of that shield exists just in case I want to solder a tiny additional Flash chip on the display board. Confusion again, because they wired only 2 of those F_* pins, the 3rd one isn't wired anywhere -_-
