3Com Corporation
	     EtherDisk Diskette for the EtherLink Plus Adapter

			   System Resources



The EtherLink Plus adapter uses three system resources:

     - I/O address range
     - Interrupt level
     - DMA channel

The adapter's options are factory set with the following settings:

     - I/O base address 	300h
     - Interrupt level		3
     - DMA channel		1

Before you install the adapter, make sure that these settings do not conflict
with similar settings on other peripherals.

Listed below are commonly used peripherals and the adapter option settings
they might conflict with.  If any of these peripherals are installed in your
computer, check which resources they are using and make sure the EtherLink Plus
adapter options are not set to use the same resources.	Other peripherals,
not mentioned in these lists, might also cause conflicts.


NOTES:	The codes in parenthesis following a peripheral name indicates that the
	information applies only on those types of computers.

	PC    --  IBM PC
	XT    --  IBM PC/XT
	AT    --  IBM Personal Computer AT
	PS/2  --  IBM Personal System/2 models containing the Industry Standard
		  Architecture (ISA) bus


I/O Base Address
----------------

Prototype board (PC, XT, AT)				   300
Prototype adapter (XT)					   310
Fixed disk (PS/2, PC)					   320
Reserved, PC network (XT, AT)				   360
Parallel printer port 1 				   370
SDLC, bisynchronous 2 (PC, XT, AT)			   380
Cluster (PC)						   390
Bisynchronous 1 (PC, XT, AT)				   3A0
Monochrone display and printer adapter (PC, XT, AT)	   3B0
Enhanced graphics adapter, video subsystem (PS/2, XT, AT)  3C0
Color/graphics monitor adapter (PC, XT, AT)		   3D0
Diskette controller, serial port 1			   3F0


Interrupt Level
---------------

ASYNC adapter				      3,4
SDLC adapter				      3,4
BSC adapter				      3,4
Cluster (PC,AT) 			      3
Serial port 2 (XT,AT)			      3
PC network adapter			      3
Serial port 1 (XT,AT,PS/2)		      4
Hard disk controller (PC,XT,PS/2)	      5
Parallel port 2 (XT,AT) 		      5
Diskette controller			      6
Parallel port 1 (AT, XT, PS/2)		      7
Data acquisition and control (XT)	      7
Voice communication adapter (XT)	      7
GPB (XT)				      7
Printer, alternate cluster (PC) 	      7
Redirected to IRQ 2 (AT)		      9
Reserved (AT)				      10
Reserved (AT)				      11
Reserved (AT)				      12
Fixed disk controller (AT)		      14
Reserved (AT)				      15



DMA Channel
-----------

SDLC adapter				1
Hard disk controller (PS/2)		3
Reserved (XT)				5
Reserved (XT)				6
Reserved (XT)				7




(%VER  System Resources v2.0b)