[FIX] More on-chip RAM for 1280 and 2560, gain 510 bytes or more RAM

patch available here.
you can gain 510 bytes of on chip ram disabling 3 serial ports. 
https://github.com/arduino/arduino/issues/1425

you can gain 8k of sram changing '1284p chip too, , still have 2 serial ports if needed.
http://www.crossroadsfencing.com/bobuinorev17/
pl & schematic here

Arduino Forum > Development > Suggestions for the Arduino Project > [FIX] More on-chip RAM for 1280 and 2560, gain 510 bytes or more RAM

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