Dan Barlow's Webpage

This shield provides external memory sufficient to support an external LCD at 320x240 resolution with 256 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 8 bits of data are output through a jumper header so bits can be assigned to Red, Green, and Blue.

A daughterboard option allows using an EEPROM to map the 8 bit data to 256 different 24 bit color entries.