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SubjectRe: [PATCH] Default keyboard LEDs
H. Peter Anvin, le Sun 13 Jan 2008 19:50:34 -0800, a écrit :
> >Actually, what would be perfect would be to use the configuration that
> >the BIOS sets at boot by default. That is device-dependent, however.
> >
>
> It is, but it can be read out either by INT calls at initialization
> time, or by reading out the byte at physical address 0x417:

I should have said "arch-dependent".
I didn't mean it wasn't possible, but just it'd probably be better that
driver experts do it, not me :)

> --------K-M00400017--------------------------
> MEM 0040h:0017h - KEYBOARD - STATUS FLAGS 1
> Size: BYTE
> SeeAlso: MEM 0040h:0018h,INT 16/AH=02h,MEM 0040h:0096h
>
> Bitfields for keyboard status flags 1:
> Bit(s) Description (Table M0010)
> 7 INSert active
> 6 Caps Lock active
> 5 Num Lock active
> 4 Scroll Lock active
> 3 either Alt pressed
> 2 either Ctrl pressed
> 1 Left Shift pressed
> 0 Right Shift pressed
> SeeAlso: #M0011,#00587
>
> The same information is available through INT 16h, AH=02h.

Samuel
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