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This shield provides external memory sufficient to support an external LCD at 320x240 resolution with 65535 colors.

Memory pages are mapped into the upper half of the Arduino MEGA address space.

Arduino sketches can use the extra memory and select banks with minor additional code.

The shield provides a CRT controller function that scans the memory out to the LCD.

An example sketch is provided that shows how to use and test the display.

The 16 bits of data are output as 5 bits of Red, 5 bits of Green, and 5 bits of Blue.

A jumper option allows using 6 bits of Green.