HP Vectra Technical Reference Manual page 126

SF_KEYBOARD_LED (AX
=
0418H)
This subfunction controls the state of three keyboard LED indicators. See Section 5 for more
information.
,.. If back to back calls to this function are made, only the most current value will be written to the
keyboard device.
On Entry: AH
=
F_IO_CONTROL (04H)
AL
=
SF_KEYBOARD_LED (18H)
BL
=
Bit mask
Bit Value Definition
07H-03H Reserved
02H 1 Turn on Caps lock LED
0 Turn off Caps lock LED
01H
1 Turn on Num lock LED
0 Turn off Num lock LED
OOH
1 Turn on Scroll lock LED
0 Turn off Scroll lock LED
".. BP
=
V_HPHIL (0114H)
On Exit: AH
=
Return Status Code
Registers Altered: AX, BP, DS
This function outputs a byte of data to a specific HP-HIL device register. This function will only
operate if the HP-HIL driver is in the open state.
Input System and HP-HIL 117