INT 61 - OPTIMA 1024 VGA-Sync,ET-3000 chipset - SET ZOOM WINDOW                 
	AX = 0006h
	BX:CX -> zoom window description (see #03430)
Range:	unknown
Notes:	width of zoom window must be a multiple of the pixel replication (zoom)
	  factor
	INT 61 is the default interrupt; the actual interrupt number can be
	  obtained by calling INT 16/AH=FFh
	not all vendors include the Tseng TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user.  The name comes from the name of the DOS function call used to remain in memory after termination. which supports these functions
SeeAlso: AX=0000h"OPTIMA",AX=0001h"OPTIMA",AX=0005h"OPTIMA",AX=0008h"OPTIMA"
SeeAlso: INT 16/AH=FFh"OPTIMA"


Format of Optima 1024 zoom window description:
Offset	Size	Description	(Table 03430)
 00h	WORD	X start of zoom window
 02h	WORD	Y start of zoom window
 04h	WORD	X end of zoom window
 06h	WORD	Y end of zoom window