SOS

I have two memory devices:

one is ram_on_chip

another is sdram

now i download code(*elf) into the above tow memory devices¡£

all is ok¡£

i'm sure that downloading is correct¡£(i check the address space using fs2 debugger )

now i debug the code¡£

when code in ram_on_chip¡£all is ok¡£

but when code go into sdram¡£all is blocking¡£

sos