INT 15 U - AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. PCI 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. v1.00.12.AX1T - CMOS RAMA small amount (typically 64 or 128 bytes) of memory in the system's real-time clock chip that is preserved by the clock's battery and is used for storing configuration information.  See also Real-Time Clock. BITFIELD MANIPULATION
	AX = DA20h
	BL = subfunction
	    00h set CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. data field
		BH = CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. data field number (00h-4Dh)
		CH = new value for bitfield (in lowest bits of register)
	    01h read CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. data field
		BH = CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. data field number (00h-4Dh)
		Return: CH = value of bitfield
			CL = mask of valid bits
		Note:	both CL/CH shifted to move valid bits into lowest pos
	    02h set CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. byte
		CL = CMOS RAMA small amount (typically 64 or 128 bytes) of memory in the system's real-time clock chip that is preserved by the clock's battery and is used for storing configuration information.  See also Real-Time Clock. address (00h-7Fh)
		CH = new value for CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. byte
	    03h get CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. byte
		CL = CMOS RAMA small amount (typically 64 or 128 bytes) of memory in the system's real-time clock chip that is preserved by the clock's battery and is used for storing configuration information.  See also Real-Time Clock. address (00h-7Fh)
		Return: CH = value of CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. byte
	    04h update CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. checksums
		Note:	sets 2Eh/2Fh to checksum of 10h-2Dh and 7Eh/7Fh to
			  checksum of 48h-7Dh
	    05h verify CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. checksums
		Return:	CF clear if checksums OK
			    AH = 00h
			CF set if checksum mismatch
			    AH = 01h
Return: CF clear if successful
	    AH = 00h
	CF set on error
	    AH = error code (86h unsupported function/data field)
Notes:	this function was not supported by the v1.00.05.AX1 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., but had been
	  added by 1.00.12.AX1T
	after using subfunctions 00h or 02h, the application must call
	  subfunction 04h to update the checksums to prevent an error the next
	  time the system is booted


(Table 00542)
Values for AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. 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. v1.00.12.AX1T CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. bitfield identifier:
 ID	address	bit(s)	contents
 00h	1Ah	7-6
 01h	1Dh	7-6
 02h	6Eh	1
 03h	77h	0
 04h	77h	1
 05h	77h	2
 06h	77h	3
 07h	77h	5
 08h	77h	6
 09h	77h	7
 0Ah	78h	7	power management enabled???
 0Bh	78h	6
 0Ch	10h	7-4	first floppy drive type
 0Dh	10h	3-0	second floppy drive type
 0Eh	11h	7
 0Fh	20h	4-0	selected language for error messages/setup utility
 10h	11h	2-1
 11h	11h	4
 12h	11h	0
 13h	11h	3
 14h	13h	7
 15h	13h	6-5
 16h	13h	4-2
 17h	19h	7
 18h	19h	6
 19h	19h	5
 1Ah	19h	4
 1Bh	1Eh	2-0
 1Ch	1Bh	7-6
 1Dh	1Ch	7
 1Eh	1Ch	3
 1Fh	1Ah	5-4
 20h	1Dh	5-4
 21h	1Bh	5-4
 22h	1Ch	6
 23h	1Ch	2
 24h	1Ah	3-2
 25h	1Dh	3-2
 26h	1Bh	3-2
 27h	1Ch	5
 28h	1Ch	1
 29h	1Ah	1-0
 2Ah	1Dh	1-0
 2Bh	1Bh	1-0
 2Ch	1Ch	4
 2Dh	1Ch	0
 2Eh	50h	7-0
 2Fh	51h	7-0
 30h	52h	7-0
 31h	53h	7-0
 32h	60h	0
 33h	60h	0
 34h	60h	0
 35h	60h	0
 36h	60h	0
 37h	60h	0
 38h	60h	1
 39h	61h	7
 3Ah	60h	2
 3Bh	61h	6-4
 3Ch	61h	2-0
 3Dh	60h	7-6
 3Eh	60h	5-4
 3Fh	78h	5-4
 40h	6Eh	5
 41h	1Eh	3
 42h	6Eh	0
 43h	6Eh	2
 44h	6Fh	1-0
 45h	6Fh	1-0
 46h	28h	4-2
 47h	28h	7-5
 48h	6Eh	4
 49h	6Eh	3
 4Ah	76h	7-0
 4Bh	77h	4
 4Ch	11h	6
 4Dh	1Fh	7-0