Int 15/AX=DB01h

AMI BIOS - Flash ROM - GET BIOS SUBSYSTEM INFORMATION

AX = DB01h
CL = BIOS subsystem information identifier (see #00545)

Return:
CF clear if successful
AX = 0000h
ES:DI -> 56-byte record describing subsystem (see #00546)
CF set on error
AH = status
01h nonexistent subsystem
86h function not supported
AL = 00h

Note: Used by FMUP.EXE, Intel's Flash Memory Update utility

See Also: AX=DB00h - AX=DB02h



(Table 00545)
Values for AMI BIOS subsystem identifier:
00h    recovery code
01h    system BIOS
02h    PCI configuration data
03h    OEM logo data area (see #00547)
04h    system BIOS/Language Set (one system).
Configuration utility (another system)

See Also: #00546


Format of AMI BIOS subsystem information:

Offset  Size    Description     (Table 00546)
00h    BYTE    subsystem identifier/logical area type (see #00545)
01h    DWORD   subsystem (FlashROM page) size in bytes
05h    BYTE    flag:
Loadable from file (FFh=yes)
06h    BYTE    flag:
Reboot after update (FFh=yes)
07h    BYTE    flag:
Update entire image (FFh=yes)
08h 24 BYTEs   subsystem/logical area name
20h    BYTE    subsystem identifier???
21h    BYTE    flag:
Reprogrammable if FFh
22h    BYTE    ??? (01h,02h seen)
23h  5 BYTEs   ??? (apparently always 00h)
28h 16 BYTEs   BIOS reserved string (usually version number)

See Also: #00544


Format of AMI OEM Logo data area:

Offset  Size    Description     (Table 00547)
00h  8 BYTEs   signature
"TEXTLOGO" if text-mode OEM logo
8 DUP (FFh) if unused
08h    WORD    offset of logo font definition table
0Ah    WORD    offset of logo data
0Ch    WORD    size of logo font table in words
0Eh    WORD    offset of upper left corner of logo in video page
10h    WORD    width of logo
12h    WORD    height of logo
14h    BYTE    reserved???
var    var     logo font definition (16 bytes per character)
var    var     logo data as character/attribute pairs

Note: The attribute for the logo characters specifies which font will be used for that character. If bit 3 is cleared, the normal system font is used; if bit 3 is set, the logo font is used, with screen colors adjusted to match the corresponding non-bright attribute for the system font

See Also: #00545 - #00546

Category: Vendor-specific BIOS Extensions - Int 15h - A

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