INT 15 - VMiX v2+ - "sys_sint" - INVOKE SOFTWARE INTERRUPT
	AH = 1Ah
	STACK:	WORD	interrupt number
		DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	pointer to register structure
Return: AX = returned flags
                                                                                

INT 15 - MultiDOS Plus - MAP SEMAPHORE NAME TO NUMBER                           
	AH = 1Ah
	DS:SI -> 8-byte name
Return: AL = status
	    00h successful
		AH = semaphore number (20h-3Fh)
	    04h out of string space
Notes:	all eight bytes of the name are significant
	if the name does not already exist, it is added to the name table and
	  associated with a free semaphore number
	names cannot be destroyed
SeeAlso: AH=1Bh"MultiDOS",AH=1Ch"MultiDOS",AH=1Dh"MultiDOS"