Online HelpPC 2.10      Quick Reference Utility     Copyright 1991 David Jurgens

 
             INT 15,3 - Write Blocks to Cassette (PC,PCjr only)             
                                                                                
                                                                                
        AH = 03                                                                 
        CX = count of bytes to write                                            
        ES:BX = pointer to data buffer                                          
                                                                                
                                                                                
        on return:                                                              
                                                                                
        CX = zero                                                               
        ES:BX = pointer to byte following last byte written                     
                                                                                
                                                                                
        - data is actually written in 256 byte blocks                           
        - if CX is less than 256, then the block is padded                      
        - no error detection/correction is available for writing                
                                                                                
                                                                                
 

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