Xilinx Inc. and Subsidiaries - Page 5

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          Acquired intellectual property rights costs were defined as costs           
          incurred in connection with the acquisition of products or                  
          intellectual property rights.  In determining the allocation of             
          costs pursuant to the cost-sharing agreement, petitioner did not            
          include in research and development costs any amount related to             
          the issuance of employee stock options (ESOs).                              
               Cost-sharing percentages for petitioner and XI relating to             
          1997, 1998, and 1999 were as follows:                                       
                         Year      Petitioner     XI                                  
                         1997      73.61%         26.39%                              
                         1998      73.35          26.65                               
                         1999      65.09          34.91                               
          In 1997, 1998, and 1999, the following number of petitioner’s and           
          XI’s employees engaged in research and development:                         
                         Year      Petitioner     XI                                  
                         1997      338            6                                   
                         1998      343            10                                  
                         1999      394            16                                  
          III. Petitioner’s Stock Option Plans                                        
              ESOs are offers to sell stock at a stated price (i.e., the              
         exercise price) for a stated period of time.  They are used by               
         many companies to attract, retain, and motivate employees and                
         align employee and employer goals.  There are basically three                
         types of ESOs:  statutory or incentive stock options (ISOs),                 
         nonstatutory stock options (NSOs), and purchase rights issued                
         pursuant to an employee stock purchase plan (ESPP purchase                   






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