INT 7D - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. DOS 6.1 E.EXE - ??? Note: E.EXE checks whether this interrupt is in use (not 0000h:0000h), and if it is used, attempts to load E55VGA.EX instead of the default E.EX overlay. However, E55VGA.EX is not included in IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. DOS 6.1.