INT 62 u - FGDRIVER v4.02 - "FG_SETVIEW" - DEFINE VIEWPORT
	AX = 00B5h
	ES:BX -> variable record (see #03501)
	CX = viewport's top edge in screen space
	DX = viewport's bottom edge in screen space
Return: nothing
Note:	the FGDRIVER functions are rearranged with each major release, but
	  their parameters do not change (see #03474)
SeeAlso: AX=004Fh


Format of FGDRIVER SETVIEW variable record:
Offset	Size	Description	(Table 03501)
 00h	WORD	viewport's left edge in viewport units
 02h	WORD	viewport's right edge in viewport units
 04h	WORD	viewport's top edge in viewport units
 06h	WORD	viewport's bottom edge in viewport units
 08h	WORD	viewport's left edge in screen space
 0Ah	WORD	viewport's right edge in screen space