INT 80 U - 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 - internal - 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. SUBSYSTEM SELECTION
	AH = function
	    00h install and initialize 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. subsystem
		AL = ??? (00h,01h,03h)
		CX:BX = subsystem ID (see #03971)
		ESI = address from which to load, or 00000000h for default for
			subsystem
		EDI = physical address at which to install, or 0 for default
		Note:	if CX=0000h on entry, this call is applied to all
			  subsystems whose ID has low word BX
	    01h get 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. subsystem information
		CX:BX = subsystem ID (see #03971)
		Return: AL = ???
			AH = ???
			EDX = uncompressed size of subsystem in bytes
			SI = offset within subsystem of initialization
				routine, or FFFFh if none
			EDI = physical address of default location or 0
	    02h get matching subsystem identifier
		AL = index into subsystem list (return ALth occurrence
		      matching BX)
		BX = low word of subsystem identifier
			(0001h,0002h,0004h,0005h,000Bh,FFFFh)
		Return: CF clear if successful
			    CX = high word of ALth matching subsystem
			CF set on error
		Note:	the system is halted if AL=00h on entry
	    03h set up "big real" mode (4G segment limits)
	    04h turn off "big real" mode (restore 64K segment limits)
	    05h remove 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. subsystem
		CX:BX = subsystem ID to leave out
		Note:	the system is halted if an invalid (not installed)
			  subsystem ID is specified
	    06h get installed subsystem info
		CX:BX = subsystem ID (see #03971)
		Return:	CF clear
			EDX = length of ???
			EDI = linear address of start of ???
		Note:	the system is halted if an invalid (not installed)
			  subsystem ID is specified
Return: CF clear if successful
	CF set on non-fatal error
Note:	this interrupt vector is cleared to 0000h:0000h near the end of the
	  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. startup sequence


(Table 03971)
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. subsystem ID:
 00010001h	ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. 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. @F000-FFFF
 00010002h	setup??? (loaded @6000-68FF)
 00010005h	APM code
 0001000Bh	language-specific error message set (English)
 00020002h	PnP/PCI ACFG code (loaded @F000-F1FF)
 0001FFFFh
 0002FFFFh	recovery code
 00030004h
 0003FFFFh	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. decompression code
 0004000Bh
 00060004h
 0100FFFFh	ACFG data
 10000000h	ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. @C000 (64K)
 10000001h	HMAsee High Memory Area (48K)
 10000002h	RAM(Random Access Memory)	See also DRAM, SRAM. @7A00 (24K)
 10000003h	RAM(Random Access Memory)	See also DRAM, SRAM. @8000-BFFF
 10000004h
 10000005h	real-mode address space (0-1M)
 1000000Bh	installed language-specific message set???