So I ordered one of the NVRam DMD+ chips so that I can pull the batteries from my board and not have to worry about it. It appears there are two memory controllers on my CPU board. I labeled them A and B in the picture attached. First, can someone tell me which of these I will need to replace? I believe it is A, but want to make sure before I cause any problems. Total newbie question I know.
Second total newbie question - there are some updates to the ROM firmware which I think would be beneficial (ability to bypass OPTOs when they go out, etc) so I have ordered a set of ROMs from someone who burns them. It was listed as 'Stern Pinball Roller Coaster Tycoon ROM Upgrade Set CPU 7.02 Display 7.01'
I am assuming that my labeled C and D chips are the CPU and display ROMs that I will be replacing? I feel dumb asking, but I don't want to plug anything in the wrong slots and cause problems.