[syslinux] [PATCH 0/3] v2: mbr: Ctrl-key press forces load from first hard disk

[Erwan]

TJ wrote:
> Version 2 of these patches includes optimisations suggested by H Peter
> Alvin to save bytes:
>
>   * Use memory-mapped I/O register to read keyboard shift flags
>   * Don't reload DX from memory; move immediate byte to register
>
> Tested using mbr.bin.
>
> TJ (3):
>   mbr: Ctrl-key press forces load from first hard disk
>   gptmbr: Ctrl-key press forces load from first hard disk
>   isohdpfx: Ctrl-key press forces load from first hard disk
>   
This features sounds interesting and usefull but without any 
documentation, it might be forgotten by many of us.

Could you provide a patch for integrating some doc :
- What issue that patch is solving ?
- When do we use it ?
- How do we use it ?

Would be lovely in order not to let that patch get out of our memories :p

Cheers,
Erwan