INT E0 - REAL/32 - "L_SET" - SET DEFAULT LIST DEVICE
	CL = A0h
	DX = ID of list (printer) device
Return: AX = status (0000h success, FFFFh if invalid printer number)
	may destroy SI,DI
SeeAlso: INT E0/CL=92h,INT E0/CL=9Eh,INT E0/CL=A4h