Disable motherboard RAAM on Mega 2
Posted: 14 Jun 2026 00:36
Hi All,
Been struggling getting my Mega 4 fixed so managed to pick-up a reasonably priced Mega 2 motherboard that works great. I have the Exxos 4 meg upgrade arriving early next week and reading through some documentation it looks like I need to disable the motherboard RAM during installation.
I really don't want to desolder the existing RAM just in case I want to go back to stock.
What's the easiest way to disable the RAM?
EDIT: iIt looks like I need to tie R65, R66, R68 and R70 to +5 VDC to disable the on-board RAM. Correct?
Thanks
Been struggling getting my Mega 4 fixed so managed to pick-up a reasonably priced Mega 2 motherboard that works great. I have the Exxos 4 meg upgrade arriving early next week and reading through some documentation it looks like I need to disable the motherboard RAM during installation.
I really don't want to desolder the existing RAM just in case I want to go back to stock.
What's the easiest way to disable the RAM?
EDIT: iIt looks like I need to tie R65, R66, R68 and R70 to +5 VDC to disable the on-board RAM. Correct?
Thanks