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Based on kernel version 2.6.33. Page generated on 2010-02-24 15:36 EST.

1	
2	NOTE
3	----
4	
5	This document was contributed by Cirrus Logic for kernel 2.2.5.  This version
6	has been updated for 2.3.48 by Andrew Morton.
7	
8	Cirrus make a copy of this driver available at their website, as
9	described below.  In general, you should use the driver version which
10	comes with your Linux distribution.
11	
12	
13	
14	CIRRUS LOGIC LAN CS8900/CS8920 ETHERNET ADAPTERS
15	Linux Network Interface Driver ver. 2.00 <kernel 2.3.48>
16	===============================================================================
17	 
18	
19	TABLE OF CONTENTS
20	
21	1.0 CIRRUS LOGIC LAN CS8900/CS8920 ETHERNET ADAPTERS
22	    1.1 Product Overview 
23	    1.2 Driver Description
24		1.2.1 Driver Name
25		1.2.2 File in the Driver Package
26	    1.3 System Requirements
27	    1.4 Licensing Information
28	
29	2.0 ADAPTER INSTALLATION and CONFIGURATION
30	    2.1 CS8900-based Adapter Configuration
31	    2.2 CS8920-based Adapter Configuration 
32	
33	3.0 LOADING THE DRIVER AS A MODULE
34	
35	4.0 COMPILING THE DRIVER
36	    4.1 Compiling the Driver as a Loadable Module
37	    4.2 Compiling the driver to support memory mode
38	    4.3 Compiling the driver to support Rx DMA 
39	    4.4 Compiling the Driver into the Kernel
40	
41	5.0 TESTING AND TROUBLESHOOTING
42	    5.1 Known Defects and Limitations
43	    5.2 Testing the Adapter
44	        5.2.1 Diagnostic Self-Test
45	        5.2.2 Diagnostic Network Test
46	    5.3 Using the Adapter's LEDs
47	    5.4 Resolving I/O Conflicts
48	
49	6.0 TECHNICAL SUPPORT
50	    6.1 Contacting Cirrus Logic's Technical Support
51	    6.2 Information Required Before Contacting Technical Support
52	    6.3 Obtaining the Latest Driver Version
53	    6.4 Current maintainer
54	    6.5 Kernel boot parameters
55	
56	
57	1.0 CIRRUS LOGIC LAN CS8900/CS8920 ETHERNET ADAPTERS
58	===============================================================================
59	
60	
61	1.1 PRODUCT OVERVIEW
62	
63	The CS8900-based ISA Ethernet Adapters from Cirrus Logic follow 
64	IEEE 802.3 standards and support half or full-duplex operation in ISA bus 
65	computers on 10 Mbps Ethernet networks.  The adapters are designed for operation 
66	in 16-bit ISA or EISA bus expansion slots and are available in 
67	10BaseT-only or 3-media configurations (10BaseT, 10Base2, and AUI for 10Base-5 
68	or fiber networks).  
69	
70	CS8920-based adapters are similar to the CS8900-based adapter with additional 
71	features for Plug and Play (PnP) support and Wakeup Frame recognition.  As 
72	such, the configuration procedures differ somewhat between the two types of 
73	adapters.  Refer to the "Adapter Configuration" section for details on 
74	configuring both types of adapters.
75	
76	
77	1.2 DRIVER DESCRIPTION
78	
79	The CS8900/CS8920 Ethernet Adapter driver for Linux supports the Linux
80	v2.3.48 or greater kernel.  It can be compiled directly into the kernel
81	or loaded at run-time as a device driver module.
82	
83	1.2.1 Driver Name: cs89x0
84	
85	1.2.2 Files in the Driver Archive:
86	
87	The files in the driver at Cirrus' website include:
88	
89	  readme.txt         - this file
90	  build              - batch file to compile cs89x0.c.
91	  cs89x0.c           - driver C code
92	  cs89x0.h           - driver header file
93	  cs89x0.o           - pre-compiled module (for v2.2.5 kernel)
94	  config/Config.in   - sample file to include cs89x0 driver in the kernel.
95	  config/Makefile    - sample file to include cs89x0 driver in the kernel.
96	  config/Space.c     - sample file to include cs89x0 driver in the kernel.
97	
98	
99	
100	1.3 SYSTEM REQUIREMENTS
101	
102	The following hardware is required:
103	
104	   * Cirrus Logic LAN (CS8900/20-based) Ethernet ISA Adapter   
105	
106	   * IBM or IBM-compatible PC with:
107	     * An 80386 or higher processor
108	     * 16 bytes of contiguous IO space available between 210h - 370h
109	     * One available IRQ (5,10,11,or 12 for the CS8900, 3-7,9-15 for CS8920).
110	
111	   * Appropriate cable (and connector for AUI, 10BASE-2) for your network
112	     topology.
113	
114	The following software is required:
115	
116	* LINUX kernel version 2.3.48 or higher
117	
118	   * CS8900/20 Setup Utility (DOS-based)
119	
120	   * LINUX kernel sources for your kernel (if compiling into kernel)
121	
122	   * GNU Toolkit (gcc and make) v2.6 or above (if compiling into kernel 
123	     or a module)   
124	
125	
126	
127	1.4 LICENSING INFORMATION
128	
129	This program is free software; you can redistribute it and/or modify it under
130	the terms of the GNU General Public License as published by the Free Software
131	Foundation, version 1.
132	
133	This program is distributed in the hope that it will be useful, but WITHOUT
134	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
135	FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 
136	more details.
137	
138	For a full copy of the GNU General Public License, write to the Free Software
139	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
140	
141	
142	
143	2.0 ADAPTER INSTALLATION and CONFIGURATION
144	===============================================================================
145	
146	Both the CS8900 and CS8920-based adapters can be configured using parameters 
147	stored in an on-board EEPROM. You must use the DOS-based CS8900/20 Setup 
148	Utility if you want to change the adapter's configuration in EEPROM.  
149	
150	When loading the driver as a module, you can specify many of the adapter's 
151	configuration parameters on the command-line to override the EEPROM's settings 
152	or for interface configuration when an EEPROM is not used. (CS8920-based 
153	adapters must use an EEPROM.) See Section 3.0 LOADING THE DRIVER AS A MODULE.
154	
155	Since the CS8900/20 Setup Utility is a DOS-based application, you must install 
156	and configure the adapter in a DOS-based system using the CS8900/20 Setup 
157	Utility before installation in the target LINUX system.  (Not required if 
158	installing a CS8900-based adapter and the default configuration is acceptable.)
159	     
160	
161	2.1 CS8900-BASED ADAPTER CONFIGURATION
162	
163	CS8900-based adapters shipped from Cirrus Logic have been configured 
164	with the following "default" settings:
165	
166	  Operation Mode:      Memory Mode
167	  IRQ:                 10
168	  Base I/O Address:    300
169	  Memory Base Address: D0000
170	  Optimization:	       DOS Client
171	  Transmission Mode:   Half-duplex
172	  BootProm:            None
173	  Media Type:	       Autodetect (3-media cards) or 
174	                       10BASE-T (10BASE-T only adapter)
175	
176	You should only change the default configuration settings if conflicts with 
177	another adapter exists. To change the adapter's configuration, run the 
178	CS8900/20 Setup Utility. 
179	
180	
181	2.2 CS8920-BASED ADAPTER CONFIGURATION
182	
183	CS8920-based adapters are shipped from Cirrus Logic configured as Plug
184	and Play (PnP) enabled.  However, since the cs89x0 driver does NOT
185	support PnP, you must install the CS8920 adapter in a DOS-based PC and
186	run the CS8900/20 Setup Utility to disable PnP and configure the
187	adapter before installation in the target Linux system.  Failure to do
188	this will leave the adapter inactive and the driver will be unable to
189	communicate with the adapter.  
190	
191	
192	        **************************************************************** 
193	        *                    CS8920-BASED ADAPTERS:                    *
194	        *                                                              * 
195	        * CS8920-BASED ADAPTERS ARE PLUG and PLAY ENABLED BY DEFAULT.  * 
196	        * THE CS89X0 DRIVER DOES NOT SUPPORT PnP. THEREFORE, YOU MUST  *
197	        * RUN THE CS8900/20 SETUP UTILITY TO DISABLE PnP SUPPORT AND   *
198	        * TO ACTIVATE THE ADAPTER.                                     *
199	        ****************************************************************
200	
201	
202	
203	
204	3.0 LOADING THE DRIVER AS A MODULE
205	===============================================================================
206	
207	If the driver is compiled as a loadable module, you can load the driver module
208	with the 'modprobe' command.  Many of the adapter's configuration parameters can 
209	be specified as command-line arguments to the load command.  This facility 
210	provides a means to override the EEPROM's settings or for interface 
211	configuration when an EEPROM is not used.
212	
213	Example:
214	
215	    insmod cs89x0.o io=0x200 irq=0xA media=aui
216	
217	This example loads the module and configures the adapter to use an IO port base
218	address of 200h, interrupt 10, and use the AUI media connection.  The following
219	configuration options are available on the command line:
220	
221	* io=###               - specify IO address (200h-360h)
222	* irq=##               - specify interrupt level
223	* use_dma=1            - Enable DMA
224	* dma=#                - specify dma channel (Driver is compiled to support
225	                         Rx DMA only)
226	* dmasize=# (16 or 64) - DMA size 16K or 64K.  Default value is set to 16.
227	* media=rj45           - specify media type
228	   or media=bnc
229	   or media=aui
230	   or media=auto
231	* duplex=full          - specify forced half/full/autonegotiate duplex
232	   or duplex=half
233	   or duplex=auto
234	* debug=#              - debug level (only available if the driver was compiled
235	                         for debugging)
236	
237	NOTES:
238	
239	a) If an EEPROM is present, any specified command-line parameter
240	   will override the corresponding configuration value stored in
241	   EEPROM.
242	
243	b) The "io" parameter must be specified on the command-line.  
244	
245	c) The driver's hardware probe routine is designed to avoid
246	   writing to I/O space until it knows that there is a cs89x0
247	   card at the written addresses.  This could cause problems
248	   with device probing.  To avoid this behaviour, add one
249	   to the `io=' module parameter.  This doesn't actually change
250	   the I/O address, but it is a flag to tell the driver
251	   to partially initialise the hardware before trying to
252	   identify the card.  This could be dangerous if you are
253	   not sure that there is a cs89x0 card at the provided address.
254	
255	   For example, to scan for an adapter located at IO base 0x300,
256	   specify an IO address of 0x301.  
257	
258	d) The "duplex=auto" parameter is only supported for the CS8920.
259	
260	e) The minimum command-line configuration required if an EEPROM is
261	   not present is:
262	
263	   io 
264	   irq 
265	   media type (no autodetect)
266	
267	f) The following additional parameters are CS89XX defaults (values
268	   used with no EEPROM or command-line argument).
269	
270	   * DMA Burst = enabled
271	   * IOCHRDY Enabled = enabled
272	   * UseSA = enabled
273	   * CS8900 defaults to half-duplex if not specified on command-line
274	   * CS8920 defaults to autoneg if not specified on command-line
275	   * Use reset defaults for other config parameters
276	   * dma_mode = 0
277	
278	g) You can use ifconfig to set the adapter's Ethernet address.
279	
280	h) Many Linux distributions use the 'modprobe' command to load
281	   modules.  This program uses the '/etc/conf.modules' file to
282	   determine configuration information which is passed to a driver
283	   module when it is loaded.  All the configuration options which are
284	   described above may be placed within /etc/conf.modules.
285	
286	   For example:
287	
288	   > cat /etc/conf.modules
289	   ...
290	   alias eth0 cs89x0
291	   options cs89x0 io=0x0200 dma=5 use_dma=1
292	   ...
293	
294	   In this example we are telling the module system that the
295	   ethernet driver for this machine should use the cs89x0 driver.  We
296	   are asking 'modprobe' to pass the 'io', 'dma' and 'use_dma'
297	   arguments to the driver when it is loaded.
298	
299	i) Cirrus recommend that the cs89x0 use the ISA DMA channels 5, 6 or
300	   7.  You will probably find that other DMA channels will not work.
301	
302	j) The cs89x0 supports DMA for receiving only.  DMA mode is
303	   significantly more efficient.  Flooding a 400 MHz Celeron machine
304	   with large ping packets consumes 82% of its CPU capacity in non-DMA
305	   mode.  With DMA this is reduced to 45%.
306	
307	k) If your Linux kernel was compiled with inbuilt plug-and-play
308	   support you will be able to find information about the cs89x0 card
309	   with the command
310	
311	   cat /proc/isapnp
312	
313	l) If during DMA operation you find erratic behavior or network data
314	   corruption you should use your PC's BIOS to slow the EISA bus clock.
315	
316	m) If the cs89x0 driver is compiled directly into the kernel
317	   (non-modular) then its I/O address is automatically determined by
318	   ISA bus probing.  The IRQ number, media options, etc are determined
319	   from the card's EEPROM.
320	
321	n) If the cs89x0 driver is compiled directly into the kernel, DMA
322	   mode may be selected by providing the kernel with a boot option
323	   'cs89x0_dma=N' where 'N' is the desired DMA channel number (5, 6 or 7).
324	
325	   Kernel boot options may be provided on the LILO command line:
326	
327		LILO boot: linux cs89x0_dma=5
328	
329	   or they may be placed in /etc/lilo.conf:
330	
331		image=/boot/bzImage-2.3.48
332		  append="cs89x0_dma=5"
333		  label=linux
334		  root=/dev/hda5
335		  read-only
336	
337	   The DMA Rx buffer size is hardwired to 16 kbytes in this mode.
338	   (64k mode is not available).
339	
340	
341	4.0 COMPILING THE DRIVER
342	===============================================================================
343	
344	The cs89x0 driver can be compiled directly into the kernel or compiled into
345	a loadable device driver module.
346	
347	
348	4.1 COMPILING THE DRIVER AS A LOADABLE MODULE
349	
350	To compile the driver into a loadable module, use the following command 
351	(single command line, without quotes):
352	
353	"gcc -D__KERNEL__ -I/usr/src/linux/include -I/usr/src/linux/net/inet -Wall 
354	-Wstrict-prototypes -O2 -fomit-frame-pointer -DMODULE -DCONFIG_MODVERSIONS 
355	-c cs89x0.c"
356	
357	4.2 COMPILING THE DRIVER TO SUPPORT MEMORY MODE
358	
359	Support for memory mode was not carried over into the 2.3 series kernels.
360	
361	4.3 COMPILING THE DRIVER TO SUPPORT Rx DMA
362	
363	The compile-time optionality for DMA was removed in the 2.3 kernel
364	series.  DMA support is now unconditionally part of the driver.  It is
365	enabled by the 'use_dma=1' module option.
366	
367	4.4 COMPILING THE DRIVER INTO THE KERNEL
368	
369	If your Linux distribution already has support for the cs89x0 driver
370	then simply copy the source file to the /usr/src/linux/drivers/net
371	directory to replace the original ones and run the make utility to
372	rebuild the kernel.  See Step 3 for rebuilding the kernel.
373	
374	If your Linux does not include the cs89x0 driver, you need to edit three 
375	configuration files, copy the source file to the /usr/src/linux/drivers/net
376	directory, and then run the make utility to rebuild the kernel.
377	
378	1. Edit the following configuration files by adding the statements as
379	indicated.  (When possible, try to locate the added text to the section of the
380	file containing similar statements).
381	
382	
383	a.) In /usr/src/linux/drivers/net/Config.in, add:
384	
385	tristate 'CS89x0 support' CONFIG_CS89x0
386	
387	Example:
388	
389	     if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
390	       tristate 'ICL EtherTeam 16i/32 support' CONFIG_ETH16I
391	     fi
392	
393	     tristate 'CS89x0 support' CONFIG_CS89x0
394	
395	     tristate 'NE2000/NE1000 support' CONFIG_NE2000
396	     if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
397	       tristate 'NI5210 support' CONFIG_NI52
398	
399	
400	b.) In /usr/src/linux/drivers/net/Makefile, add the following lines: 
401	
402	ifeq ($(CONFIG_CS89x0),y)
403	L_OBJS += cs89x0.o
404	else
405	  ifeq ($(CONFIG_CS89x0),m)
406	  M_OBJS += cs89x0.o
407	  endif
408	endif
409	
410	
411	c.) In /linux/drivers/net/Space.c file, add the line:
412	
413	extern int cs89x0_probe(struct device *dev);
414	
415	
416	Example:
417	
418	 extern int ultra_probe(struct device *dev);
419	 extern int wd_probe(struct device *dev);
420	 extern int el2_probe(struct device *dev);
421	
422	 extern int cs89x0_probe(struct device *dev);
423	
424	 extern int ne_probe(struct device *dev);
425	 extern int hp_probe(struct device *dev);
426	 extern int hp_plus_probe(struct device *dev);
427	
428	
429	Also add:
430	
431	 #ifdef CONFIG_CS89x0
432	 	{ cs89x0_probe,0 },
433	 #endif
434	
435	
436	2.) Copy the driver source files (cs89x0.c and cs89x0.h) 
437	into the /usr/src/linux/drivers/net directory.
438	
439	
440	3.) Go to /usr/src/linux directory and run 'make config' followed by 'make' 
441	(or make bzImage) to rebuild the kernel. 
442	
443	4.) Use the DOS 'setup' utility to disable plug and play on the NIC.
444	
445	
446	5.0 TESTING AND TROUBLESHOOTING
447	===============================================================================
448	
449	5.1 KNOWN DEFECTS and LIMITATIONS
450	
451	Refer to the RELEASE.TXT file distributed as part of this archive for a list of 
452	known defects, driver limitations, and work arounds.
453	
454	
455	5.2 TESTING THE ADAPTER
456	
457	Once the adapter has been installed and configured, the diagnostic option of 
458	the CS8900/20 Setup Utility can be used to test the functionality of the 
459	adapter and its network connection.  Use the diagnostics 'Self Test' option to
460	test the functionality of the adapter with the hardware configuration you have
461	assigned. You can use the diagnostics 'Network Test' to test the ability of the
462	adapter to communicate across the Ethernet with another PC equipped with a 
463	CS8900/20-based adapter card (it must also be running the CS8900/20 Setup 
464	Utility).
465	
466	         NOTE: The Setup Utility's diagnostics are designed to run in a
467	         DOS-only operating system environment.  DO NOT run the diagnostics 
468	         from a DOS or command prompt session under Windows 95, Windows NT, 
469	         OS/2, or other operating system.
470	
471	To run the diagnostics tests on the CS8900/20 adapter:
472	
473	   1.) Boot DOS on the PC and start the CS8900/20 Setup Utility.
474	
475	   2.) The adapter's current configuration is displayed.  Hit the ENTER key to
476	       get to the main menu.
477	
478	   4.) Select 'Diagnostics' (ALT-G) from the main menu.  
479	       * Select 'Self-Test' to test the adapter's basic functionality.
480	       * Select 'Network Test' to test the network connection and cabling.
481	
482	
483	5.2.1 DIAGNOSTIC SELF-TEST
484	
485	The diagnostic self-test checks the adapter's basic functionality as well as 
486	its ability to communicate across the ISA bus based on the system resources 
487	assigned during hardware configuration.  The following tests are performed:
488	
489	   * IO Register Read/Write Test
490	     The IO Register Read/Write test insures that the CS8900/20 can be 
491	     accessed in IO mode, and that the IO base address is correct.
492	
493	   * Shared Memory Test
494	     The Shared Memory test insures the CS8900/20 can be accessed in memory 
495	     mode and that the range of memory addresses assigned does not conflict 
496	     with other devices in the system.
497	
498	   * Interrupt Test
499	     The Interrupt test insures there are no conflicts with the assigned IRQ
500	     signal.
501	
502	   * EEPROM Test
503	     The EEPROM test insures the EEPROM can be read.
504	
505	   * Chip RAM Test
506	     The Chip RAM test insures the 4K of memory internal to the CS8900/20 is
507	     working properly.
508	
509	   * Internal Loop-back Test
510	     The Internal Loop Back test insures the adapter's transmitter and 
511	     receiver are operating properly.  If this test fails, make sure the 
512	     adapter's cable is connected to the network (check for LED activity for 
513	     example).
514	
515	   * Boot PROM Test
516	     The Boot PROM  test insures the Boot PROM is present, and can be read.
517	     Failure indicates the Boot PROM  was not successfully read due to a
518	     hardware problem or due to a conflicts on the Boot PROM address
519	     assignment. (Test only applies if the adapter is configured to use the
520	     Boot PROM option.)
521	
522	Failure of a test item indicates a possible system resource conflict with 
523	another device on the ISA bus.  In this case, you should use the Manual Setup 
524	option to reconfigure the adapter by selecting a different value for the system
525	resource that failed.
526	
527	
528	5.2.2 DIAGNOSTIC NETWORK TEST
529	
530	The Diagnostic Network Test verifies a working network connection by 
531	transferring data between two CS8900/20 adapters installed in different PCs 
532	on the same network. (Note: the diagnostic network test should not be run 
533	between two nodes across a router.) 
534	
535	This test requires that each of the two PCs have a CS8900/20-based adapter
536	installed and have the CS8900/20 Setup Utility running.  The first PC is 
537	configured as a Responder and the other PC is configured as an Initiator.  
538	Once the Initiator is started, it sends data frames to the Responder which 
539	returns the frames to the Initiator.
540	
541	The total number of frames received and transmitted are displayed on the 
542	Initiator's display, along with a count of the number of frames received and 
543	transmitted OK or in error.  The test can be terminated anytime by the user at 
544	either PC.
545	
546	To setup the Diagnostic Network Test:
547	
548	    1.) Select a PC with a CS8900/20-based adapter and a known working network
549	        connection to act as the Responder.  Run the CS8900/20 Setup Utility 
550	        and select 'Diagnostics -> Network Test -> Responder' from the main 
551	        menu.  Hit ENTER to start the Responder.
552	
553	    2.) Return to the PC with the CS8900/20-based adapter you want to test and
554	        start the CS8900/20 Setup Utility. 
555	
556	    3.) From the main menu, Select 'Diagnostic -> Network Test -> Initiator'.
557	        Hit ENTER to start the test.
558	 
559	You may stop the test on the Initiator at any time while allowing the Responder
560	to continue running.  In this manner, you can move to additional PCs and test 
561	them by starting the Initiator on another PC without having to stop/start the 
562	Responder.
563	 
564	
565	
566	5.3 USING THE ADAPTER'S LEDs
567	
568	The 2 and 3-media adapters have two LEDs visible on the back end of the board 
569	located near the 10Base-T connector.  
570	
571	Link Integrity LED: A "steady" ON of the green LED indicates a valid 10Base-T 
572	connection.  (Only applies to 10Base-T.  The green LED has no significance for
573	a 10Base-2 or AUI connection.)
574	
575	TX/RX LED: The yellow LED lights briefly each time the adapter transmits or 
576	receives data. (The yellow LED will appear to "flicker" on a typical network.)
577	
578	
579	5.4 RESOLVING I/O CONFLICTS
580	
581	An IO conflict occurs when two or more adapter use the same ISA resource (IO 
582	address, memory address or IRQ).  You can usually detect an IO conflict in one 
583	of four ways after installing and or configuring the CS8900/20-based adapter:
584	
585	    1.) The system does not boot properly (or at all).
586	
587	    2.) The driver cannot communicate with the adapter, reporting an "Adapter
588	        not found" error message.
589	
590	    3.) You cannot connect to the network or the driver will not load.
591	
592	    4.) If you have configured the adapter to run in memory mode but the driver
593	        reports it is using IO mode when loading, this is an indication of a
594	        memory address conflict.
595	
596	If an IO conflict occurs, run the CS8900/20 Setup Utility and perform a 
597	diagnostic self-test.  Normally, the ISA resource in conflict will fail the 
598	self-test.  If so, reconfigure the adapter selecting another choice for the 
599	resource in conflict.  Run the diagnostics again to check for further IO 
600	conflicts.
601	
602	In some cases, such as when the PC will not boot, it may be necessary to remove
603	the adapter and reconfigure it by installing it in another PC to run the 
604	CS8900/20 Setup Utility.  Once reinstalled in the target system, run the 
605	diagnostics self-test to ensure the new configuration is free of conflicts 
606	before loading the driver again.
607	
608	When manually configuring the adapter, keep in mind the typical ISA system 
609	resource usage as indicated in the tables below.
610	
611	I/O Address    	Device                        IRQ      Device
612	-----------    	--------                      ---      --------
613	 200-20F       	Game I/O adapter               3       COM2, Bus Mouse
614	 230-23F       	Bus Mouse                      4       COM1
615	 270-27F       	LPT3: third parallel port      5       LPT2
616	 2F0-2FF       	COM2: second serial port       6       Floppy Disk controller
617	 320-32F       	Fixed disk controller          7       LPT1
618	                                      	       8       Real-time Clock
619	                                                 9       EGA/VGA display adapter    
620	                                                12       Mouse (PS/2)                              
621	Memory Address  Device                          13       Math Coprocessor
622	--------------  ---------------------           14       Hard Disk controller
623	A000-BFFF	EGA Graphics Adapter
624	A000-C7FF	VGA Graphics Adapter
625	B000-BFFF	Mono Graphics Adapter
626	B800-BFFF	Color Graphics Adapter
627	E000-FFFF	AT BIOS
628	
629	
630	
631	
632	6.0 TECHNICAL SUPPORT
633	===============================================================================
634	
635	6.1 CONTACTING CIRRUS LOGIC'S TECHNICAL SUPPORT
636	
637	Cirrus Logic's CS89XX Technical Application Support can be reached at:
638	
639	Telephone  :(800) 888-5016 (from inside U.S. and Canada)
640	           :(512) 442-7555 (from outside the U.S. and Canada)
641	Fax        :(512) 912-3871
642	Email      :ethernet[AT]crystal.cirrus[DOT]com
643	WWW        :http://www.cirrus.com
644	
645	
646	6.2 INFORMATION REQUIRED BEFORE CONTACTING TECHNICAL SUPPORT
647	
648	Before contacting Cirrus Logic for technical support, be prepared to provide as 
649	Much of the following information as possible. 
650	
651	1.) Adapter type (CRD8900, CDB8900, CDB8920, etc.)
652	
653	2.) Adapter configuration
654	
655	    * IO Base, Memory Base, IO or memory mode enabled, IRQ, DMA channel
656	    * Plug and Play enabled/disabled (CS8920-based adapters only)
657	    * Configured for media auto-detect or specific media type (which type).    
658	
659	3.) PC System's Configuration
660	
661	    * Plug and Play system (yes/no)
662	    * BIOS (make and version)
663	    * System make and model
664	    * CPU (type and speed)
665	    * System RAM
666	    * SCSI Adapter
667	
668	4.) Software
669	
670	    * CS89XX driver and version
671	    * Your network operating system and version
672	    * Your system's OS version 
673	    * Version of all protocol support files
674	
675	5.) Any Error Message displayed.
676	
677	
678	
679	6.3 OBTAINING THE LATEST DRIVER VERSION
680	
681	You can obtain the latest CS89XX drivers and support software from Cirrus Logic's 
682	Web site.  You can also contact Cirrus Logic's Technical Support (email:
683	ethernet[AT]crystal.cirrus[DOT]com) and request that you be registered for automatic 
684	software-update notification.
685	
686	Cirrus Logic maintains a web page at http://www.cirrus.com with the
687	latest drivers and technical publications.
688	
689	
690	6.4 Current maintainer
691	
692	In February 2000 the maintenance of this driver was assumed by Andrew
693	Morton.
694	
695	6.5 Kernel module parameters
696	
697	For use in embedded environments with no cs89x0 EEPROM, the kernel boot
698	parameter `cs89x0_media=' has been implemented.  Usage is:
699	
700		cs89x0_media=rj45    or
701		cs89x0_media=aui     or
702		cs89x0_media=bnc
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