












Arco Electronics Technical Advisory   #15       February 15, 1993

Please Address All Inquiries to Itzik Levy

			Phone:  (305) 925-2688
			Fax  :  (305) 925-2889

Arco Product(s) :       AC-179

Environment             :       Microsoft Windows Enhanced Mode

Description             :       When starting Windows in Enhanced mode the 
				system hangs after the Windows initial screen 
				appears.

Solution                :       When running Windows enhanced modes in an 
				80386 or 80486 system, the following entry 
				must be made in the Windows SYSTEM.INI file 
				under the [386 ENH] section:

				"VIRTUALHDIRQ=FALSE"

				If the DMA feature of the AC-179 is being 
				used, the following entry must be made in the 
				Windows SYSTEM.INI file under the [386 ENH] 
				section:

				"DMABUFFERSIZE=024"

				If you are running in EMM386 mode:

				"DMABUFFERSIZE=049"
