How do I upgrade my XTEND-H4 to use a DRAM module instead of SRAM?

• Configure JP12: pins 1-2 to select DRAM or pins 2-3 to select SRAM.  When powering up the XTEND-H4 board, hold the mode button to enter mode selection. To cycle through modes, press the mode button. To use a DRAM, select any one of the modes from Mode 5 - Mode 13 depending on your memory configuration.  Once finished, press the select button once. (Refer to section 4.10 'External Memory Configuration and Timing' in the XTEND-H4 manual).  You must repeat this every time you power up because the power will return to its default settings.