Num/Caps/Scroll - Lock

[Hornet]

Hello.
How can i activate the Num/Caps/Scroll Lock LEDs in Protected Mode?

thx Hornet (german)

[df]

you dont. they are toggles, you have to keep the state yourself. and have your keyboard driver interpret keypresses based on its state.

[chrisa128]

Hi,

To actually get the LEDs to light up you have to send a command to the keyboard, here is the one from my Keyboard Driver....

Code: Select all

      write_kbd(0x60, 0xED);         temp = 0;
      if(kbd_status & KBD_META_SCRL)
         temp |= 1;
      if(kbd_status & KBD_META_NUM)
         temp |= 2;
      if(kbd_status & KBD_META_CAPS)
         temp |= 4;
      write_kbd(0x60, temp);   
      return 0;

The first line tells the keyboard u want to turn the LEDS on/off. The other checks to see which LED you want to set. The last line sets it. The bottom three bits actually tells it the led.

Hope this helps,