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 INT 15h, 00h    Turn on cassette motor (PC,Jr)
 INT 15h, 01h    Turn off cassette motor (PC,Jr)
 INT 15h, 02h    Read data blocks from cassette (PC,Jr)
 INT 15h, 03h    Write data blocks to cassette (PC,Jr)
 INT 15h, 08h    GET CHANNEL CONTROL BLOCK
 INT 15h, 09h    GET ID OF QUEUED ELEMENT
 INT 15h, 0Fh    Format unit periodic interrupt (PS ESDI drives only)
 INT 15h, 10h    TopView, DesqView & VMIX
 INT 15h, 20h    Print.Com                                   (AT,XT286,PS50+)
 INT 15h, 21h    Power-ON self-test error log                         (PS50+)
 INT 15h, 40h    Read/Modify profiles                           (Convertible)
 INT 15h, 41h    Wait on external event                         (Convertible)
 INT 15h, 42h    Request system power off                       (Convertible)
 INT 15h, 43h    Read system status                             (Convertible)
 INT 15h, 44h    (De)activate internal modem power              (Convertible)
 INT 15h, 4Fh    Keyboard intercept          (AT model 3x9,XT2,XT286,Conv,PS)
 INT 15h, 80h    Device open                                (AT,XT2,XT286,PS)
 INT 15h, 81h    Devide close                               (AT,XT2,XT286,PS)
 INT 15h, 82h    Device program terminate                   (AT,XT2,XT286,PS)
 INT 15h, 83h    Event wait                                 (AT,XT286,CONV,PS)
 INT 15h, 84h    Read joystick                              (AT,XT2,XT286,PS)
 INT 15h, 85h    System request key press              (AT,XT2,XT286,CONV,PS)
 INT 15h, 86h    Wait                                  (AT,XT2,XT286,CONV,PS)
 INT 15h, 87h    Extended memory - Block move                   (AT,XT286,PS)
 INT 15h, 88h    Extended memory - Get memory size              (AT,XT286,PS)
 INT 15h, 89h    Switch to protected mode                    (AT,XT286,PS50+)
 INT 15h, 90h    Device busy loop                      (AT,XT2,XT286,CONV,PS)
 INT 15h, 91h    Interrupt complete                    (AT,XT2,XT286,CONV,PS)
 INT 15h, C0h    Get system configuration (XT after 1/10/86,AT,CONV,XT286,PS)
 INT 15h, C1h    Extended-BIOS data-area segment address                 (PS)
 INT 15h, C2h    Pointing device BIOS interface                          (PS)
 INT 15h, C3h    Enable/Disable watchdog timeout                      (PS50+)
 INT 15h, C4h    Programmable option select                           (PS50+)
 INT 15h, DEh    DesqView