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???