Using the Madge OS2 ODI Driver
==============================                              MARCH 1993

The  Madge  OS/2  ODI  driver  (MADGEODI.SYS)  conforms  to  the   ODI 
specification for a LAN driver.  The Madge OS/2 ODI driver consists of 
a single OS2 file: MADGEODI.SYS, which must be loaded as an OS2 device 
in the CONFIG.SYS file.

To  install  the  driver  follow  the instructions in the NetWare OS/2 
Requester manual.  To load the Madge driver  enter  the  driver  name, 
"MADGEODI.SYS"  in  the  driver name window when prompted. The install 
program will add the driver to your CONFIG.SYS.
  
If  you  wish  to use source routing then you will need to include the 
following line in CONFIG.SYS after the MADGEODI.SYS  line  and  before 
the IPX.SYS line.:

  device=c:\NETWARE\route.sys

A typical CONFIG.SYS is:

DEVICE=C:\NETWARE\LSL.SYS     	(supplied by Novell)
DEVICE=C:\NETWARE\MADGEODI.SYS  (Madge OS2 ODI Driver)
DEVICE=C:\NETWARE\ROUTE.SYS	(supplied by Novell)
DEVICE=C:\NETWARE\IPX.SYS	(supplied by Novell)

The  driver  uses  a default maximum frame size of 4210 bytes (4Kbytes 
data), which may be reduced by the link support layer (which  defaults 
to  1130  bytes).   The default internal buffer sizes are 10Kbytes for 
both send and receive buffers. The default threshold  frame  size  for 
using transmit descriptors is 256 bytes.  

The  MADGEODI  driver  is  configurable  from  a  NET.CFG  file.   The 
configuration  file  is  mandatory  if  more  than one adapter card is 
installed.  If the file does not exist, or contains  no  valid  driver 
information then the defaults are used if one adapter is found, and an 
error is returned if more than one adapter is found.

The options required (most  of  which  are  described  in  the  Novell 
Netware  Requester  for  OS2 manual) are listed following the driver's 
section header  which  is  "LINK  DRIVER  MADGEODI".   The  recognized 
keywords, and their meaning are as follows:

PORT  address			:  The  IO  location  of  the required 
				   adapter card (e.g.  PORT  =  1a20). 
				   For   details,  see  the  Requester 
				   manual.
				   
SLOT slot_num 			:  The IO SLOT of the required adapter 
				   card. For details,see the Requester 
				   manual.

FRAME frame_type		:  A Frame type that is required  (may 
				   be  entered  more  than once).  For 
				   details, see the Requester manual.

PROTOCOL abc			:  A Protocol stack that  is  required 
				   (may  be  entered  more than once). 
				   For   details,   see the Requester 
				   manual.

MAX FRAME SIZE nnnn 		:  The   Maximum  packet  size  to  be 
				   supported    including     protocol 
				   headers.

RECEIVE  BUFFER  SIZE  nnnn  [loc]:The  size  of  the internal receive 
				   buffer to be used.   It  should  be 
				   larger  than  max  frame  size  and 
				   smaller than 64Kbytes.  The  buffer 
				   may   be  placed  in  high  or  low 
				   memory. Default is high  (that  is, 
				   greater  than  1M).  If you require 
				   DOS, we advise you not to  use  low 
				   memory.

TRANSMIT BUFFER SIZE nnnn [loc]	:  Corresponds to  receive buffer size.

DESCRIPTOR THRESHOLD nnnn	:  This   is   the   level   at  which 
				   descriptors    are     used     for 
				   transmission.  The default value is 
				   10000 bytes, which should not  need 
				   to  be  changed. It may be possible 
				   to  improve  the   performance   of 
				   single-card     workstations     by 
				   lowering this to 256 bytes but this 
				   has  proved   to   be   application 
				   dependent.  Multi-card workstations 
				   should NOT  attempt to  change  the 
				   threshold as the system will almost 
				   certainly hang.

FUNCTIONAL ADDRESS nnnn         :  Sets a functional address  for  use 
				   by  the driver.  The address  is in 
				   the hexadecimal  form C000????????. 
				   If   the  parameter  is   given  as 
				   NetWare (instead of  a  hexadecimal 
				   number). The   NetWare   functional 
				   address is C00000800000.

example :-

	link driver MADGEODI

		port 	             1a20
		receive buffer size  20000 
		transmit buffer size 20000 
		max frame size	     4202
		frame 		     token-ring
		frame		     token-ring_snap
                functional address   netware

	link driver MADGEODI

		port 	             a20
		receive buffer size  20000 low 
		transmit buffer size 20000 high
		max frame size	     1300

end of example.