INT 10 - Chips & Technologies Extended BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - GET LAPTOP DISPLAY STATUS
	AX = 5F50h
Return: DL = display status (see #00183)
Note:	this call can be used on Toshiba laptops since ~1995 instead of
	  INT 42/AX=7503h which is no longer supported with the F655xx chips
SeeAlso: INT 42/AX=7503h


Bitfields for display status:
Bit(s)	Description	(Table 00183)
 7-4	always 0 ???
 3	1: both displays active (bit 1 also set)
 2	1: normal (monochrome display only), 0: inverse or color
 1	1: internal display active, 0: external only
 0	always set ???
                                                                                

INT 10 - Chips & Technologies '65530' BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - GET 655xx INFORMATION
	AX = 5F50h
Return: AL = 5Fh if function supported
	    AH = status
		00h unsuccessful
		01h successful
		    BX = width of flat panel in pixels
		    CX = height of flat panel in pixels
		    DX = F65520/525/530 status (see #00184)
SeeAlso: AX=5F51h,INT 15/AX=5F31h


Bitfields for C&T F65520/525/530 status:
Bit(s)	Description	(Table 00184)
 15-0	reserved
 6-5	type of clock chip
	00 = 404
	01 = 404A
	10 = 404B ES
	11 = 404B
 4	accelerator enabled
 3	both displays active
 2	video polarity (1 = inverted)
 1	output device
	0 CRT
	1 flat panel (LCD(Liquid Crystal Display))
 0	reserved