Function 21, subfunction 13, subsubfunction 2 - get information on current videomode.
Parameters:
- eax = 21 - function number
- ebx = 13 - subfunction number
- ecx = 2 - number of the driver function
Returned value:
- eax = -1 - driver is not loaded or not initialized;
ebx,ecx are destroyed
- eax = [width]*65536 + [height]
- ebx = frequency of the vertical scanning (in Hz)
- ecx = number of current videomode
Remarks:
- Driver must be initialized by call to
driver function 1.
- If only screen sizes are required, it is more expedient to use
function 14 taking into account that it
returns sizes on 1 less.