INT E4 - DIGITAL RESEARCH - FLAG INTERRUPT                                      
Note:	This interrupt corresponds with Concurrent CP/M-86One of the three operating systems offered by IBMInternational Busiuness Machines for its original PCIBM PC (the other two were MSDOS and the UCSD p-System).  It has since evolved into DR-DOS version 6 and Novell DOS 7. and is to get
	  an unused flag.
SeeAlso: INT E5"DIGITAL RESEARCH"