Online HelpPC 2.10      Quick Reference Utility     Copyright 1991 David Jurgens

 
                     AAS - Ascii Adjust for Subtraction                     
                                                                                
                                                                                
        Usage:  AAS                                                             
        Modifies flags: AF CF (OF,PF,SF,ZF undefined)                           
                                                                                
                                                                                
        Corrects result of a previous unpacked decimal subtraction in AL.       
        High order nibble is zeroed.                                            
                                                                                
                                                                                
                                 Clocks                 Size                    
        Operands         808x  286   386   486          Bytes                   
                                                                                
        none              8     3     4     3             1                     
                                                                                
                                                                                
        - see Instruction Timing                                                
                                                                                
                                                                                
 

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