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HCS12 Full Chip Simulation, STD writing 'uu' to memory instead of registers A:B value. Why?

Question asked by Jairus Martin on Oct 20, 2011
Latest reply on Oct 24, 2011 by Jairus Martin

Hi folks,


I'm writing a lab assignment for my class but cant figure out why this writes 'uu' instead of the register values.


Registers have A = 00, B = 41 when stepping through.

   STD 2,SP+ ; Store the value in the Result array, then increment

I know uu means not initalized, but what does that mean??