INT 17 - Alloy MW386 v2+ - GET/SET SPOOL(Simultaneous Peripheral Operation OnLine)  The process of performing output to a slow peripheral such as a printer while other tasks continue running on the CPU.  This term dates back to mainframe days before the invention of timesharing. FLAGS
	AH = A7h
	AL = spool flags (see #00645)
	BX = logical device number
	    00h-03h = LPT1-LPT4
	    04h-07h = COM1-COM4
Return: AL = status (see #00642)
Note:	the documentation does not state which register contains the result of
	  a GET
SeeAlso: AH=A4h,AH=A6h


Bitfields for Alloy spool flags:
Bit(s)	Description	(Table 00645)
 0	banner page enabled (see AH=A6h)
 1	form feed enabled (see AH=A4h)
 2-6	reserved (0)
 7	set flags if 1, get flags if 0