Help for init value of SRAM in MPC 562

Hello Everyone
Anybody know or can help me to find out more information regarding the initialization value of SRAM contents during power up .
I would like to save some values in sram so that I can read that back after a reset , for eg  saving a byte value and its compliment  and check the consistency between these two variables . This would make sure that, the value is really what I saved prior to reset and not the garbage value which would appear in the memory after a power up.
Any existing behavior known for mpc microcontrollers related to this?
if it is stored like the value and its compliment , what  is the probability of the random initial values in two bytes to be compliment of each other  and mistaken as the good value    
Regards
Sudhersan
 


     

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