[SeaBIOS] [PATCH 04/15] Report stdvga modes in VBE via int10 (AX = 4F00h)

[Christian Gmeiner]

2012/9/3 Kevin O'Connor <kevin at koconnor.net>:
> On Sat, Sep 01, 2012 at 05:12:55PM +0200, Christian Gmeiner wrote:
>> As all supported graphic adapters are supporting VGA we should
>> list them in int10 (AX = 4F00h). Also clext.c and bochsvga.c
>> are haveing a function named like is_XXX_mode() which checks
>> if its a default VGA mode or a VESA mode. If its a normal VGA
>> mode stdvga_set_mode() gets called.
> [...]
>>  void
>>  stdvga_list_modes(u16 seg, u16 *dest, u16 *last)
>>  {
>> +    int i;
>> +    for (i = 0; i < ARRAY_SIZE(vga_modes); i++) {
>> +        struct stdvga_mode_s *stdmode_g = &vga_modes[i];
>> +        u16 mode = GET_GLOBAL(stdmode_g->mode);
>> +        if (mode == 0xffff)
>> +            continue;
>> +        SET_FARVAR(seg, *dest, mode);
>> +        dest++;
>> +    }
>> +
>>      SET_FARVAR(seg, *dest, 0xffff);
>>  }
>
> This is a good idea.  However, I don't think vbe_104f01() will
> correctly handle all the standard vga modes as it is coded today.
>

I will have a closer look at it during my following patches. If you want you
can skip this patch.

---
Christian Gmeiner, MSc