|  Value  |  Meaning  | 
 0X    |   Structure and coding of command and response according to this part of ISO/IEC 7816 (for coding of 'X' see table 9)  | 
 10  to 7F    |   RFU  | 
 8X , 9X   |  Structure of command and response according to this part of ISO/IEC 7816. Except for 'X' (for coding, see table 9), the coding and meaning of command and response are proprietary  | 
 AX   |  Unless otherwise specified by the application context, structure and coding of command and response according to this part of ISO/IEC 7816 (for coding of 'X', see table 9)  | 
 B0  to CF    |   Structure of command and response according to this part of ISO/IEC 7816  | 
 D0  to FE    |   Proprietary structure and coding of command and response  | 
 FF   |  Reserved for PTS  |