EDI - EDI88128C70ZC - IC, memory. SRAM 1Mb (128K x 8) 70nS.
I've change the battery, reflowed the SRAM another chip to do with power. No the game not only doesn't save but he's going to pixelated and the screen goes blank. Can someone
avr11: building an SPI SRAM shield for an Arduino Mega | Dave Cheney