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I use SST ICE with Keil uvision3 to debug my program.When in "GO",I reset the ICE manually,and found all the content in RAM(code) were changed to FF while I "GO" the program once again.Why?Thanks for your reply.
In my case, I have on-chip XRAM and it is enabled/disabled by a bit in one of those SFRs. When I reset the chip, the XRAM is disabled by default until after initialization code. Could this also be your case?
I should check it carefully again.Thanks.