INT 1A - Disk Spool II v4.0x - UPDATE SPOOL FILE

	AX = E302h
	ES:BX -> ASCIZ filename (max 32 chars)
	ES:SI -> spool file status record (see #01262)
Return: AH = status
	    00h successful
	    F0h not a spool file
	    FFh failed
Note:	this function is also supported by Vertisoft's Emulaser utility ELSPL,
	  as that is a licensed version of Disk Spool II
SeeAlso: AH=E0h,AX=E301h,AX=E401h