As part of his experiments with the PDP-11 simulator we reported on earlier, Dave Cheney needed more SRAM to meet the requirements of the code. Much more - which over a process of trial and error saw the final result using two Microchip 23LC1024 SPI-bus SRAM ICs. This gives an extra 256kb over the onboard SRAM in the ATmega2560 and solved the problem.
Apart from the trials of building a prototype using a soldereless breadboard, Dave also explains the tricks required when initialising a sketch to ensure correct use of the SRAM ICs, and overall is an interesting explanation of the design process. We're also delighted to see Dave use our Protoshield Mega to do the job:
When adding external hardware or devices to your next Arduino project, you'll need a protoshield to mount the external circuitry. In doing so, consider our range of ProtoShields. From the tiny LeoStick to the Mega range, we offer a complete range for you to work with.