RBIL61 - INT 10 - VESA SuperVGA BIOS - SAVE/RESTORE SuperVGA VIDEO STATE

INT 10 - VESA(Video Electronics Standards Association)  An industry group which sets both hardware and software standards and recommendations. The term VESA is also used to denote compliance with the VESA SuperVGA BIOS Extensions, a standard set of video BIOS functions for accessing video modes of higher resolution than those defined by IBMInternational Busiuness Machines. SuperVGA 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. - SAVE/RESTORE SuperVGA VIDEO STATE
	AX = 4F04h
	DL = subfunction
	    00h get state buffer size
		Return: BX = number of 64-byte blocks needed
	    01h save video states
		ES:BX -> buffer
	    02h restore video states
		ES:BX -> buffer
	CX = states to save/restore (see #00085)
Return: AL = 4Fh if function supported
	AH = status
	    00h successful
	    01h failed
SeeAlso: AH=1Ch,AX=5F90h,AX=5FA0h


Bitfields for VESA(Video Electronics Standards Association)  An industry group which sets both hardware and software standards and recommendations. The term VESA is also used to denote compliance with the VESA SuperVGA BIOS Extensions, a standard set of video BIOS functions for accessing video modes of higher resolution than those defined by IBMInternational Busiuness Machines. SuperVGA states to save/restore:
Bit(s)	Description	(Table 00085)
 0	video hardware state
 1	video 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. data state
 2	video DAC(Digital-to-Analog Converter) A hardware device (in its simplest form, nothing more than a set of interconnected resistors) which converts a digital number into an analog signal whose voltage is proportional to the value of the digital number.  VGAVideo Graphics Array and later color video boards use DACs to convert color values into the analog signals sent to the display; sound boards normally use DACs as well. state
 3	SuperVGA register state
SeeAlso: #00048,#00186