Turn Backlight (Option) On/Off [+]; Reset Screen Parameters [+] - Husky MP2500 Manual

Exit
Description

Turn backlight (option) on/off [+]

Entry
Exit
Description

Reset screen parameters [+]

Entry
Exit
Description
198
AL=font number
Returns the currently selected graphics font number in
AL. See the description of function 60H for details of
font numbers.
AH=78H
AL=control 0=turn off, non 0=turn on
Returns nothing
Turns the LCD's optional backlight on or off.
Remember that use of the backlight decreases the
battery life considerably.
The backlight can also be toggled on and off by using
WL (in developer keyboard mode) or L (in user
keyboard mode).
AH=79H
CF=0
Resets the screen parameters to the following defaults:
Full block cursor
Video mode 2
Reset split screen parameters
Allow LCD cursor synchronisation
Allow power control in hot key
Allow hot key
Set contrast level to default
Switch backlight (option) off
Set backlight (option) timeout to 2 minutes
Set upper 128 graphics character definitions to BIOS
defaults
H MP2500 System Developer's Guide
USKY