INT 21 - PGS1600.DEV - IOCTL - SET CONFIGURATION???

	AX = 4403h
	BX = file handle for device "PGS1600$"
	CX = 0018h (size of buffer)
	DS:DX -> configuration buffer (see #01484 at AX=4402h"PGS1600")
Return: CF clear if successful
	    AX = number of bytes actually written
	CF set on error
	    AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
Program: PGS1600.DEV is a device driver for the Cornerstone Technology PG1600
	  display adapter, which provides a 1600x1200 monochrome display as
	  well as one of two emulations, MDA or CGA.
SeeAlso: AX=4402h"PGS1600"