22.3.5 SetMode() Implementation
The SetMode()
function is used to select which of the supported output modes
the upper layer wishes to use. The choice should be verified to be a
supportable mode and then the selected mode should be made the currently active
output mode. After this done (and success is guaranteed) update the
Mode->Mode
variable with the new currently active mode.
Note: All devices that support the Simple Text Output Protocol must minimally support an 80 x 25 character mode. Additional modes are optional.