2-3 = -1 

∙ Since this satisfies condition 2 of 4.1, the MSB of "MDXSL" and "MDYSL" is

 32+ (-1) = 31 = 1F  H  = (011111)  B 
MSB = 0 (011111)  B  = 1F  H  for the latest sample
In the past sample MSB = 1 (111111)  B  = 3F  H  

It will be.