INT 61 - OPTIMA 1024 VGA-Sync - REPORT ZOOM FACTOR AX = 0003h Return: AX = zoom factor Note: returns the current zoom factor INT 61h is the default interrupt; the actual interrupt number can be obtained by calling INT 16/AH=FFh SeeAlso: INT 61/AX=0000h"OPTIMA",INT 61/AX=0005h"OPTIMA"