void WinLdrSetupSpecialDataPointers ( )
Definition at line 300 of file winldr.c.
Referenced by WinLdrSetupMachineDependent().
{
    REGS BiosRegs;

    /* Get the address of the bios rom fonts. Win 2003 videoprt reads these
       values from address 0x700 .. 0x718 and store them in the registry
       in HKLM\System\CurrentControlSet\Control\Wow\RomFontPointers
       Int 10h, AX=1130h, BH = pointer specifier
       returns: es:bp = address */
    BiosRegs.d.eax = 0x1130;
    BiosRegs.b.bh = ROM_8x14CharacterFont;
    Int386(0x10, &BiosRegs, &BiosRegs);
    RomFontPointers[0] = BiosRegs.w.es << 4 | BiosRegs.w.bp;

    BiosRegs.b.bh = ROM_8x8DoubleDotFontLo;
    Int386(0x10, &BiosRegs, &BiosRegs);
    RomFontPointers[1] = BiosRegs.w.es << 16 | BiosRegs.w.bp;

    BiosRegs.b.bh = ROM_8x8DoubleDotFontHi;
    Int386(0x10, &BiosRegs, &BiosRegs);
    RomFontPointers[2] = BiosRegs.w.es << 16 | BiosRegs.w.bp;

    BiosRegs.b.bh = ROM_AlphaAlternate;
    Int386(0x10, &BiosRegs, &BiosRegs);
    RomFontPointers[3] = BiosRegs.w.es << 16 | BiosRegs.w.bp;

    BiosRegs.b.bh = ROM_8x16Font;
    Int386(0x10, &BiosRegs, &BiosRegs);
    RomFontPointers[4] = BiosRegs.w.es << 16 | BiosRegs.w.bp;

    BiosRegs.b.bh = ROM_Alternate9x16Font;
    Int386(0x10, &BiosRegs, &BiosRegs);
    RomFontPointers[5] = BiosRegs.w.es << 16 | BiosRegs.w.bp;

    /* Store address of the extended bios data area in 0x740 */
    BiosRegs.d.eax = 0xC100;
    Int386(0x15, &BiosRegs, &BiosRegs);
    if (INT386_SUCCESS(BiosRegs))
    {
        *ExtendedBIOSDataArea = BiosRegs.w.es << 4;
        *ExtendedBIOSDataSize = 1024;
        TRACE("*ExtendedBIOSDataArea = 0x%lx\n", *ExtendedBIOSDataArea);
    }
    else
    {
        WARN("Couldn't get address of extended BIOS data area\n");
        *ExtendedBIOSDataArea = 0;
        *ExtendedBIOSDataSize = 0;
    }
}
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