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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
(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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