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     Error: A2067
     Cannot override ES for destination
 
     A segment override was used on the destination of a string
     instruction. Although the default DS:SI register pair for the
     source can have a segment override, the destination must always
     be in the ES:DI register pair. The ES segment cannot be
     overridden. For example, the following statement is illegal:
 
            rep    stos ds:destin     ; Can't override ES
                                    -♦-