"ram_is_present" return false

my ram is 4*16Mb,and connect as the 64M in the HW manual,and when I run the program to the function"ram_is_present",it return false,and couldn’t run the root.c,how can i resolve it,tks

make sure you adjust both the linker and debugger script files as you have less memory then on eval board (defaults are for 16M)