Assembly Language Help (alang.hlp) (Table of Contents; Topic list)
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Scaling (ss) Field
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     See also: Index Field, Base Register (base) Field
 
     In scaled indexing, the scaling (ss) field specifies a multiplier
     for the index register. Scaled addressing is allowed only under
     the .386 and .486 directives.
 
     ss     Scale
 
     00     1
     01     2
     10     4
     11     8
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