Online HelpPC 2.10      Quick Reference Utility     Copyright 1991 David Jurgens

 
                          STD - Set Direction Flag                          
                                                                                
                                                                                
        Usage:  STD                                                             
        Modifies flags: DF                                                      
                                                                                
                                                                                
        Sets the Direction Flag to 1 causing string instructions to             
        auto-decrement SI and DI instead of auto-increment.                     
                                                                                
                                                                                
                                 Clocks                 Size                    
        Operands         808x  286   386   486          Bytes                   
                                                                                
        none              2     2     2     2             1                     
                                                                                
                                                                                
        - see Instruction Timing                                                
                                                                                
                                                                                
 

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