INT D4 - PC-MOS/386 v3.0+ - ALLOCATE NATIVE MODE MEMORY BLOCK                   
	AH = 11h
	EBX = block length in bytes
Return: CF clear if successful
	    EBX = number of bytes actually allocated
	    ES = selector for allocated block
	CF set on error
	    AX = error code (see #01680 at INT 21/AH=59h/BX=0000h)
Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating
	  system by The Software Link, Inc.
Note:	the memory must be released before the program terminates
SeeAlso: AH=10h,AH=12h,INT 38