Blame - Documentation/networking/arcnet-hardware.txt - kernel/msm-4.9

blob: 731de411513cf1a5685035b7b0df8f68c160beab [file] [log] [blame]

Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	1
				2	-----------------------------------------------------------------------------
				3	1) This file is a supplement to arcnet.txt. Please read that for general
				4	driver configuration help.
				5	-----------------------------------------------------------------------------
				6	2) This file is no longer Linux-specific. It should probably be moved out of
				7	the kernel sources. Ideas?
				8	-----------------------------------------------------------------------------
				9
				10	Because so many people (myself included) seem to have obtained ARCnet cards
				11	without manuals, this file contains a quick introduction to ARCnet hardware,
				12	some cabling tips, and a listing of all jumper settings I can find. Please
				13	e-mail apenwarr@worldvisions.ca with any settings for your particular card,
				14	or any other information you have!
				15
				16
				17	INTRODUCTION TO ARCNET
				18	----------------------
				19
				20	ARCnet is a network type which works in a way similar to popular Ethernet
				21	networks but which is also different in some very important ways.
				22
				23	First of all, you can get ARCnet cards in at least two speeds: 2.5 Mbps
				24	(slower than Ethernet) and 100 Mbps (faster than normal Ethernet). In fact,
				25	there are others as well, but these are less common. The different hardware
				26	types, as far as I'm aware, are not compatible and so you cannot wire a
				27	100 Mbps card to a 2.5 Mbps card, and so on. From what I hear, my driver does
				28	work with 100 Mbps cards, but I haven't been able to verify this myself,
				29	since I only have the 2.5 Mbps variety. It is probably not going to saturate
				30	your 100 Mbps card. Stop complaining. :)
				31
				32	You also cannot connect an ARCnet card to any kind of Ethernet card and
				33	expect it to work.
				34
				35	There are two "types" of ARCnet - STAR topology and BUS topology. This
				36	refers to how the cards are meant to be wired together. According to most
				37	available documentation, you can only connect STAR cards to STAR cards and
				38	BUS cards to BUS cards. That makes sense, right? Well, it's not quite
				39	true; see below under "Cabling."
				40
				41	Once you get past these little stumbling blocks, ARCnet is actually quite a
				42	well-designed standard. It uses something called "modified token passing"
				43	which makes it completely incompatible with so-called "Token Ring" cards,
				44	but which makes transfers much more reliable than Ethernet does. In fact,
				45	ARCnet will guarantee that a packet arrives safely at the destination, and
				46	even if it can't possibly be delivered properly (ie. because of a cable
				47	break, or because the destination computer does not exist) it will at least
				48	tell the sender about it.
				49
				50	Because of the carefully defined action of the "token", it will always make
				51	a pass around the "ring" within a maximum length of time. This makes it
				52	useful for realtime networks.
				53
				54	In addition, all known ARCnet cards have an (almost) identical programming
				55	interface. This means that with one ARCnet driver you can support any
				56	card, whereas with Ethernet each manufacturer uses what is sometimes a
				57	completely different programming interface, leading to a lot of different,
				58	sometimes very similar, Ethernet drivers. Of course, always using the same
				59	programming interface also means that when high-performance hardware
				60	facilities like PCI bus mastering DMA appear, it's hard to take advantage of
				61	them. Let's not go into that.
				62
				63	One thing that makes ARCnet cards difficult to program for, however, is the
				64	limit on their packet sizes; standard ARCnet can only send packets that are
				65	up to 508 bytes in length. This is smaller than the Internet "bare minimum"
				66	of 576 bytes, let alone the Ethernet MTU of 1500. To compensate, an extra
				67	level of encapsulation is defined by RFC1201, which I call "packet
				68	splitting," that allows "virtual packets" to grow as large as 64K each,
				69	although they are generally kept down to the Ethernet-style 1500 bytes.
				70
				71	For more information on the advantages and disadvantages (mostly the
				72	advantages) of ARCnet networks, you might try the "ARCnet Trade Association"
				73	WWW page:
				74	http://www.arcnet.com
				75
				76
				77	CABLING ARCNET NETWORKS
				78	-----------------------
				79
				80	This section was rewritten by
				81	Vojtech Pavlik <vojtech@suse.cz>
				82	using information from several people, including:
				83	Avery Pennraun <apenwarr@worldvisions.ca>
				84	Stephen A. Wood <saw@hallc1.cebaf.gov>
				85	John Paul Morrison <jmorriso@bogomips.ee.ubc.ca>
				86	Joachim Koenig <jojo@repas.de>
				87	and Avery touched it up a bit, at Vojtech's request.
				88
				89	ARCnet (the classic 2.5 Mbps version) can be connected by two different
				90	types of cabling: coax and twisted pair. The other ARCnet-type networks
				91	(100 Mbps TCNS and 320 kbps - 32 Mbps ARCnet Plus) use different types of
				92	cabling (Type1, Fiber, C1, C4, C5).
				93
				94	For a coax network, you "should" use 93 Ohm RG-62 cable. But other cables
				95	also work fine, because ARCnet is a very stable network. I personally use 75
				96	Ohm TV antenna cable.
				97
				98	Cards for coax cabling are shipped in two different variants: for BUS and
				99	STAR network topologies. They are mostly the same. The only difference
				100	lies in the hybrid chip installed. BUS cards use high impedance output,
				101	while STAR use low impedance. Low impedance card (STAR) is electrically
				102	equal to a high impedance one with a terminator installed.
				103
				104	Usually, the ARCnet networks are built up from STAR cards and hubs. There
				105	are two types of hubs - active and passive. Passive hubs are small boxes
				106	with four BNC connectors containing four 47 Ohm resistors:
				107
				108	\| \| wires
				109	R + junction
				110	-R-+-R- R 47 Ohm resistors
				111	R
				112	\|
				113
				114	The shielding is connected together. Active hubs are much more complicated;
				115	they are powered and contain electronics to amplify the signal and send it
				116	to other segments of the net. They usually have eight connectors. Active
				117	hubs come in two variants - dumb and smart. The dumb variant just
				118	amplifies, but the smart one decodes to digital and encodes back all packets
				119	coming through. This is much better if you have several hubs in the net,
				120	since many dumb active hubs may worsen the signal quality.
				121
				122	And now to the cabling. What you can connect together:
				123
				124	1. A card to a card. This is the simplest way of creating a 2-computer
				125	network.
				126
				127	2. A card to a passive hub. Remember that all unused connectors on the hub
				128	must be properly terminated with 93 Ohm (or something else if you don't
				129	have the right ones) terminators.
				130	(Avery's note: oops, I didn't know that. Mine (TV cable) works
				131	anyway, though.)
				132
				133	3. A card to an active hub. Here is no need to terminate the unused
				134	connectors except some kind of aesthetic feeling. But, there may not be
				135	more than eleven active hubs between any two computers. That of course
				136	doesn't limit the number of active hubs on the network.
				137
				138	4. An active hub to another.
				139
				140	5. An active hub to passive hub.
				141
Matt LaPlante	84eb8d0	2006-10-03 22:53:09 +0200	[diff] [blame]	142	Remember that you cannot connect two passive hubs together. The power loss
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	143	implied by such a connection is too high for the net to operate reliably.
				144
				145	An example of a typical ARCnet network:
				146
				147	R S - STAR type card
				148	S------H--------A-------S R - Terminator
				149	\| \| H - Hub
				150	\| \| A - Active hub
				151	\| S----H----S
				152	S \|
				153	\|
				154	S
				155
				156	The BUS topology is very similar to the one used by Ethernet. The only
				157	difference is in cable and terminators: they should be 93 Ohm. Ethernet
				158	uses 50 Ohm impedance. You use T connectors to put the computers on a single
				159	line of cable, the bus. You have to put terminators at both ends of the
				160	cable. A typical BUS ARCnet network looks like:
				161
				162	RT----T------T------T------T------TR
				163	B B B B B B
				164
				165	B - BUS type card
				166	R - Terminator
				167	T - T connector
				168
				169	But that is not all! The two types can be connected together. According to
				170	the official documentation the only way of connecting them is using an active
				171	hub:
				172
				173	A------T------T------TR
				174	\| B B B
				175	S---H---S
				176	\|
				177	S
				178
				179	The official docs also state that you can use STAR cards at the ends of
				180	BUS network in place of a BUS card and a terminator:
				181
				182	S------T------T------S
				183	B B
				184
				185	But, according to my own experiments, you can simply hang a BUS type card
				186	anywhere in middle of a cable in a STAR topology network. And more - you
				187	can use the bus card in place of any star card if you use a terminator. Then
				188	you can build very complicated networks fulfilling all your needs! An
				189	example:
				190
				191	S
				192	\|
				193	RT------T-------T------H------S
				194	B B B \|
				195	\| R
				196	S------A------T-------T-------A-------H------TR
				197	\| B B \| \| B
				198	\| S BT \|
				199	\| \| \| S----A-----S
				200	S------H---A----S \| \|
				201	\| \| S------T----H---S \|
				202	S S B R S
				203
				204	A basically different cabling scheme is used with Twisted Pair cabling. Each
				205	of the TP cards has two RJ (phone-cord style) connectors. The cards are
				206	then daisy-chained together using a cable connecting every two neighboring
				207	cards. The ends are terminated with RJ 93 Ohm terminators which plug into
				208	the empty connectors of cards on the ends of the chain. An example:
				209
				210	___________ ___________
				211	_R_\|_ _\|_\|_ _\|_R_
				212	\| \| \| \| \| \|
				213	\|Card \| \|Card \| \|Card \|
				214	\|_____\| \|_____\| \|_____\|
				215
				216
				217	There are also hubs for the TP topology. There is nothing difficult
				218	involved in using them; you just connect a TP chain to a hub on any end or
				219	even at both. This way you can create almost any network configuration.
				220	The maximum of 11 hubs between any two computers on the net applies here as
				221	well. An example:
				222
				223	RP-------P--------P--------H-----P------P-----PR
				224	\|
				225	RP-----H--------P--------H-----P------PR
				226	\| \|
				227	PR PR
				228
				229	R - RJ Terminator
				230	P - TP Card
				231	H - TP Hub
				232
				233	Like any network, ARCnet has a limited cable length. These are the maximum
				234	cable lengths between two active ends (an active end being an active hub or
				235	a STAR card).
				236
				237	RG-62 93 Ohm up to 650 m
				238	RG-59/U 75 Ohm up to 457 m
				239	RG-11/U 75 Ohm up to 533 m
				240	IBM Type 1 150 Ohm up to 200 m
				241	IBM Type 3 100 Ohm up to 100 m
				242
				243	The maximum length of all cables connected to a passive hub is limited to 65
				244	meters for RG-62 cabling; less for others. You can see that using passive
				245	hubs in a large network is a bad idea. The maximum length of a single "BUS
				246	Trunk" is about 300 meters for RG-62. The maximum distance between the two
				247	most distant points of the net is limited to 3000 meters. The maximum length
				248	of a TP cable between two cards/hubs is 650 meters.
				249
				250
				251	SETTING THE JUMPERS
				252	-------------------
				253
				254	All ARCnet cards should have a total of four or five different settings:
				255
				256	- the I/O address: this is the "port" your ARCnet card is on. Probed
				257	values in the Linux ARCnet driver are only from 0x200 through 0x3F0. (If
				258	your card has additional ones, which is possible, please tell me.) This
				259	should not be the same as any other device on your system. According to
				260	a doc I got from Novell, MS Windows prefers values of 0x300 or more,
				261	eating net connections on my system (at least) otherwise. My guess is
				262	this may be because, if your card is at 0x2E0, probing for a serial port
				263	at 0x2E8 will reset the card and probably mess things up royally.
				264	- Avery's favourite: 0x300.
				265
				266	- the IRQ: on 8-bit cards, it might be 2 (9), 3, 4, 5, or 7.
				267	on 16-bit cards, it might be 2 (9), 3, 4, 5, 7, or 10-15.
				268
				269	Make sure this is different from any other card on your system. Note
				270	that IRQ2 is the same as IRQ9, as far as Linux is concerned. You can
				271	"cat /proc/interrupts" for a somewhat complete list of which ones are in
				272	use at any given time. Here is a list of common usages from Vojtech
				273	Pavlik <vojtech@suse.cz>:
				274	("Not on bus" means there is no way for a card to generate this
				275	interrupt)
				276	IRQ 0 - Timer 0 (Not on bus)
				277	IRQ 1 - Keyboard (Not on bus)
				278	IRQ 2 - IRQ Controller 2 (Not on bus, nor does interrupt the CPU)
				279	IRQ 3 - COM2
				280	IRQ 4 - COM1
				281	IRQ 5 - FREE (LPT2 if you have it; sometimes COM3; maybe PLIP)
				282	IRQ 6 - Floppy disk controller
				283	IRQ 7 - FREE (LPT1 if you don't use the polling driver; PLIP)
				284	IRQ 8 - Realtime Clock Interrupt (Not on bus)
				285	IRQ 9 - FREE (VGA vertical sync interrupt if enabled)
				286	IRQ 10 - FREE
				287	IRQ 11 - FREE
				288	IRQ 12 - FREE
				289	IRQ 13 - Numeric Coprocessor (Not on bus)
				290	IRQ 14 - Fixed Disk Controller
				291	IRQ 15 - FREE (Fixed Disk Controller 2 if you have it)
				292
				293	Note: IRQ 9 is used on some video cards for the "vertical retrace"
				294	interrupt. This interrupt would have been handy for things like
				295	video games, as it occurs exactly once per screen refresh, but
				296	unfortunately IBM cancelled this feature starting with the original
				297	VGA and thus many VGA/SVGA cards do not support it. For this
				298	reason, no modern software uses this interrupt and it can almost
				299	always be safely disabled, if your video card supports it at all.
				300
				301	If your card for some reason CANNOT disable this IRQ (usually there
				302	is a jumper), one solution would be to clip the printed circuit
				303	contact on the board: it's the fourth contact from the left on the
				304	back side. I take no responsibility if you try this.
				305
				306	- Avery's favourite: IRQ2 (actually IRQ9). Watch that VGA, though.
				307
				308	- the memory address: Unlike most cards, ARCnets use "shared memory" for
				309	copying buffers around. Make SURE it doesn't conflict with any other
				310	used memory in your system!
				311	A0000 - VGA graphics memory (ok if you don't have VGA)
				312	B0000 - Monochrome text mode
				313	C0000 \ One of these is your VGA BIOS - usually C0000.
				314	E0000 /
				315	F0000 - System BIOS
				316
				317	Anything less than 0xA0000 is, well, a BAD idea since it isn't above
				318	640k.
				319	- Avery's favourite: 0xD0000
				320
				321	- the station address: Every ARCnet card has its own "unique" network
				322	address from 0 to 255. Unlike Ethernet, you can set this address
				323	yourself with a jumper or switch (or on some cards, with special
				324	software). Since it's only 8 bits, you can only have 254 ARCnet cards
				325	on a network. DON'T use 0 or 255, since these are reserved (although
				326	neat stuff will probably happen if you DO use them). By the way, if you
				327	haven't already guessed, don't set this the same as any other ARCnet on
				328	your network!
				329	- Avery's favourite: 3 and 4. Not that it matters.
				330
				331	- There may be ETS1 and ETS2 settings. These may or may not make a
				332	difference on your card (many manuals call them "reserved"), but are
				333	used to change the delays used when powering up a computer on the
				334	network. This is only necessary when wiring VERY long range ARCnet
				335	networks, on the order of 4km or so; in any case, the only real
				336	requirement here is that all cards on the network with ETS1 and ETS2
				337	jumpers have them in the same position. Chris Hindy <chrish@io.org>
				338	sent in a chart with actual values for this:
				339	ET1 ET2 Response Time Reconfiguration Time
				340	--- --- ------------- --------------------
				341	open open 74.7us 840us
				342	open closed 283.4us 1680us
				343	closed open 561.8us 1680us
				344	closed closed 1118.6us 1680us
				345
				346	Make sure you set ETS1 and ETS2 to the SAME VALUE for all cards on your
				347	network.
				348
				349	Also, on many cards (not mine, though) there are red and green LED's.
				350	Vojtech Pavlik <vojtech@suse.cz> tells me this is what they mean:
				351	GREEN RED Status
				352	----- --- ------
				353	OFF OFF Power off
				354	OFF Short flashes Cabling problems (broken cable or not
				355	terminated)
				356	OFF (short) ON Card init
				357	ON ON Normal state - everything OK, nothing
				358	happens
				359	ON Long flashes Data transfer
				360	ON OFF Never happens (maybe when wrong ID)
				361
				362
				363	The following is all the specific information people have sent me about
				364	their own particular ARCnet cards. It is officially a mess, and contains
				365	huge amounts of duplicated information. I have no time to fix it. If you
				366	want to, PLEASE DO! Just send me a 'diff -u' of all your changes.
				367
				368	The model # is listed right above specifics for that card, so you should be
				369	able to use your text viewer's "search" function to find the entry you want.
				370	If you don't KNOW what kind of card you have, try looking through the
				371	various diagrams to see if you can tell.
				372
				373	If your model isn't listed and/or has different settings, PLEASE PLEASE
				374	tell me. I had to figure mine out without the manual, and it WASN'T FUN!
				375
				376	Even if your ARCnet model isn't listed, but has the same jumpers as another
				377	model that is, please e-mail me to say so.
				378
				379	Cards Listed in this file (in this order, mostly):
				380
				381	Manufacturer Model # Bits
				382	------------ ------- ----
				383	SMC PC100 8
				384	SMC PC110 8
				385	SMC PC120 8
				386	SMC PC130 8
				387	SMC PC270E 8
				388	SMC PC500 16
				389	SMC PC500Longboard 16
				390	SMC PC550Longboard 16
				391	SMC PC600 16
				392	SMC PC710 8
				393	SMC? LCS-8830(-T) 8/16
				394	Puredata PDI507 8
				395	CNet Tech CN120-Series 8
				396	CNet Tech CN160-Series 16
				397	Lantech? UM9065L chipset 8
				398	Acer 5210-003 8
				399	Datapoint? LAN-ARC-8 8
				400	Topware TA-ARC/10 8
				401	Thomas-Conrad 500-6242-0097 REV A 8
				402	Waterloo? (C)1985 Waterloo Micro. 8
				403	No Name -- 8/16
				404	No Name Taiwan R.O.C? 8
				405	No Name Model 9058 8
				406	Tiara Tiara Lancard? 8
				407
				408
				409	** SMC = Standard Microsystems Corp.
				410	** CNet Tech = CNet Technology, Inc.
				411
				412
				413	Unclassified Stuff
				414	------------------
				415	- Please send any other information you can find.
				416
				417	- And some other stuff (more info is welcome!):
				418	From: root@ultraworld.xs4all.nl (Timo Hilbrink)
				419	To: apenwarr@foxnet.net (Avery Pennarun)
				420	Date: Wed, 26 Oct 1994 02:10:32 +0000 (GMT)
				421	Reply-To: timoh@xs4all.nl
				422
				423	[...parts deleted...]
				424
				425	About the jumpers: On my PC130 there is one more jumper, located near the
				426	cable-connector and it's for changing to star or bus topology;
				427	closed: star - open: bus
				428	On the PC500 are some more jumper-pins, one block labeled with RX,PDN,TXI
				429	and another with ALE,LA17,LA18,LA19 these are undocumented..
				430
				431	[...more parts deleted...]
				432
				433	--- CUT ---
				434
				435
				436	Standard Microsystems Corp (SMC)
				437	PC100, PC110, PC120, PC130 (8-bit cards)
				438	PC500, PC600 (16-bit cards)
				439	---------------------------------
				440	- mainly from Avery Pennarun <apenwarr@worldvisions.ca>. Values depicted
				441	are from Avery's setup.
				442	- special thanks to Timo Hilbrink <timoh@xs4all.nl> for noting that PC120,
				443	130, 500, and 600 all have the same switches as Avery's PC100.
				444	PC500/600 have several extra, undocumented pins though. (?)
				445	- PC110 settings were verified by Stephen A. Wood <saw@cebaf.gov>
				446	- Also, the JP- and S-numbers probably don't match your card exactly. Try
				447	to find jumpers/switches with the same number of settings - it's
				448	probably more reliable.
				449
				450
				451	JP5 [\|] : : : :
				452	(IRQ Setting) IRQ2 IRQ3 IRQ4 IRQ5 IRQ7
				453	Put exactly one jumper on exactly one set of pins.
				454
				455
				456	1 2 3 4 5 6 7 8 9 10
				457	S1 /----------------------------------\
				458	(I/O and Memory \| 1 1 * 0 0 0 0 * 1 1 0 1 \|
				459	addresses) \----------------------------------/
				460	\|--\| \|--------\| \|--------\|
				461	(a) (b) (m)
				462
				463	WARNING. It's very important when setting these which way
				464	you're holding the card, and which way you think is '1'!
				465
				466	If you suspect that your settings are not being made
				467	correctly, try reversing the direction or inverting the
				468	switch positions.
				469
				470	a: The first digit of the I/O address.
				471	Setting Value
				472	------- -----
				473	00 0
				474	01 1
				475	10 2
				476	11 3
				477
				478	b: The second digit of the I/O address.
				479	Setting Value
				480	------- -----
				481	0000 0
				482	0001 1
				483	0010 2
				484	... ...
				485	1110 E
				486	1111 F
				487
				488	The I/O address is in the form ab0. For example, if
				489	a is 0x2 and b is 0xE, the address will be 0x2E0.
				490
				491	DO NOT SET THIS LESS THAN 0x200!!!!!
				492
				493
				494	m: The first digit of the memory address.
				495	Setting Value
				496	------- -----
				497	0000 0
				498	0001 1
				499	0010 2
				500	... ...
				501	1110 E
				502	1111 F
				503
				504	The memory address is in the form m0000. For example, if
				505	m is D, the address will be 0xD0000.
				506
				507	DO NOT SET THIS TO C0000, F0000, OR LESS THAN A0000!
				508
				509	1 2 3 4 5 6 7 8
				510	S2 /--------------------------\
				511	(Station Address) \| 1 1 0 0 0 0 0 0 \|
				512	\--------------------------/
				513
				514	Setting Value
				515	------- -----
				516	00000000 00
				517	10000000 01
				518	01000000 02
				519	...
				520	01111111 FE
				521	11111111 FF
				522
				523	Note that this is binary with the digits reversed!
				524
				525	DO NOT SET THIS TO 0 OR 255 (0xFF)!
				526
				527
				528	*****************************************************************************
				529
				530	Standard Microsystems Corp (SMC)
				531	PC130E/PC270E (8-bit cards)
				532	---------------------------
				533	- from Juergen Seifert <seifert@htwm.de>
				534
				535
				536	STANDARD MICROSYSTEMS CORPORATION (SMC) ARCNET(R)-PC130E/PC270E
				537	===============================================================
				538
				539	This description has been written by Juergen Seifert <seifert@htwm.de>
				540	using information from the following Original SMC Manual
				541
				542	"Configuration Guide for
				543	ARCNET(R)-PC130E/PC270
				544	Network Controller Boards
				545	Pub. # 900.044A
				546	June, 1989"
				547
				548	ARCNET is a registered trademark of the Datapoint Corporation
				549	SMC is a registered trademark of the Standard Microsystems Corporation
				550
				551	The PC130E is an enhanced version of the PC130 board, is equipped with a
				552	standard BNC female connector for connection to RG-62/U coax cable.
				553	Since this board is designed both for point-to-point connection in star
				554	networks and for connection to bus networks, it is downwardly compatible
				555	with all the other standard boards designed for coax networks (that is,
				556	the PC120, PC110 and PC100 star topology boards and the PC220, PC210 and
				557	PC200 bus topology boards).
				558
				559	The PC270E is an enhanced version of the PC260 board, is equipped with two
				560	modular RJ11-type jacks for connection to twisted pair wiring.
				561	It can be used in a star or a daisy-chained network.
				562
				563
				564	8 7 6 5 4 3 2 1
				565	________________________________________________________________
				566	\| \| S1 \| \|
				567	\| \|_________________\| \|
				568	\| Offs\|Base \|I/O Addr \|
				569	\| RAM Addr \| ___\|
				570	\| ___ ___ CR3 \|___\|
				571	\| \| \/ \| CR4 \|___\|
				572	\| \| PROM \| ___\|
				573	\| \| \| N \| \| 8
				574	\| \| SOCKET \| o \| \| 7
				575	\| \|________\| d \| \| 6
				576	\| ___________________ e \| \| 5
				577	\| \| \| A \| S \| 4
				578	\| \|oo\| EXT2 \| \| d \| 2 \| 3
				579	\| \|oo\| EXT1 \| SMC \| d \| \| 2
				580	\| \|oo\| ROM \| 90C63 \| r \|___\| 1
				581	\| \|oo\| IRQ7 \| \| \|o\| _____\|
				582	\| \|oo\| IRQ5 \| \| \|o\| \| J1 \|
				583	\| \|oo\| IRQ4 \| \| STAR \|_____\|
				584	\| \|oo\| IRQ3 \| \| \| J2 \|
				585	\| \|oo\| IRQ2 \|___________________\| \|_____\|
				586	\|___ ______________\|
				587	\| \|
				588	\|_____________________________________________\|
				589
				590	Legend:
				591
				592	SMC 90C63 ARCNET Controller / Transceiver /Logic
				593	S1 1-3: I/O Base Address Select
				594	4-6: Memory Base Address Select
				595	7-8: RAM Offset Select
				596	S2 1-8: Node ID Select
				597	EXT Extended Timeout Select
				598	ROM ROM Enable Select
				599	STAR Selected - Star Topology (PC130E only)
				600	Deselected - Bus Topology (PC130E only)
				601	CR3/CR4 Diagnostic LEDs
				602	J1 BNC RG62/U Connector (PC130E only)
				603	J1 6-position Telephone Jack (PC270E only)
				604	J2 6-position Telephone Jack (PC270E only)
				605
				606	Setting one of the switches to Off/Open means "1", On/Closed means "0".
				607
				608
				609	Setting the Node ID
				610	-------------------
				611
				612	The eight switches in group S2 are used to set the node ID.
				613	These switches work in a way similar to the PC100-series cards; see that
				614	entry for more information.
				615
				616
				617	Setting the I/O Base Address
				618	----------------------------
				619
				620	The first three switches in switch group S1 are used to select one
				621	of eight possible I/O Base addresses using the following table
				622
				623
				624	Switch \| Hex I/O
				625	1 2 3 \| Address
				626	-------\|--------
				627	0 0 0 \| 260
				628	0 0 1 \| 290
				629	0 1 0 \| 2E0 (Manufacturer's default)
				630	0 1 1 \| 2F0
				631	1 0 0 \| 300
				632	1 0 1 \| 350
				633	1 1 0 \| 380
				634	1 1 1 \| 3E0
				635
				636
				637	Setting the Base Memory (RAM) buffer Address
				638	--------------------------------------------
				639
				640	The memory buffer requires 2K of a 16K block of RAM. The base of this
				641	16K block can be located in any of eight positions.
				642	Switches 4-6 of switch group S1 select the Base of the 16K block.
				643	Within that 16K address space, the buffer may be assigned any one of four
				644	positions, determined by the offset, switches 7 and 8 of group S1.
				645
				646	Switch \| Hex RAM \| Hex ROM
				647	4 5 6 7 8 \| Address \| Address *)
				648	-----------\|---------\|-----------
				649	0 0 0 0 0 \| C0000 \| C2000
				650	0 0 0 0 1 \| C0800 \| C2000
				651	0 0 0 1 0 \| C1000 \| C2000
				652	0 0 0 1 1 \| C1800 \| C2000
				653	\| \|
				654	0 0 1 0 0 \| C4000 \| C6000
				655	0 0 1 0 1 \| C4800 \| C6000
				656	0 0 1 1 0 \| C5000 \| C6000
				657	0 0 1 1 1 \| C5800 \| C6000
				658	\| \|
				659	0 1 0 0 0 \| CC000 \| CE000
				660	0 1 0 0 1 \| CC800 \| CE000
				661	0 1 0 1 0 \| CD000 \| CE000
				662	0 1 0 1 1 \| CD800 \| CE000
				663	\| \|
				664	0 1 1 0 0 \| D0000 \| D2000 (Manufacturer's default)
				665	0 1 1 0 1 \| D0800 \| D2000
				666	0 1 1 1 0 \| D1000 \| D2000
				667	0 1 1 1 1 \| D1800 \| D2000
				668	\| \|
				669	1 0 0 0 0 \| D4000 \| D6000
				670	1 0 0 0 1 \| D4800 \| D6000
				671	1 0 0 1 0 \| D5000 \| D6000
				672	1 0 0 1 1 \| D5800 \| D6000
				673	\| \|
				674	1 0 1 0 0 \| D8000 \| DA000
				675	1 0 1 0 1 \| D8800 \| DA000
				676	1 0 1 1 0 \| D9000 \| DA000
				677	1 0 1 1 1 \| D9800 \| DA000
				678	\| \|
				679	1 1 0 0 0 \| DC000 \| DE000
				680	1 1 0 0 1 \| DC800 \| DE000
				681	1 1 0 1 0 \| DD000 \| DE000
				682	1 1 0 1 1 \| DD800 \| DE000
				683	\| \|
				684	1 1 1 0 0 \| E0000 \| E2000
				685	1 1 1 0 1 \| E0800 \| E2000
				686	1 1 1 1 0 \| E1000 \| E2000
				687	1 1 1 1 1 \| E1800 \| E2000
				688
				689	*) To enable the 8K Boot PROM install the jumper ROM.
				690	The default is jumper ROM not installed.
				691
				692
				693	Setting the Timeouts and Interrupt
				694	----------------------------------
				695
				696	The jumpers labeled EXT1 and EXT2 are used to determine the timeout
				697	parameters. These two jumpers are normally left open.
				698
				699	To select a hardware interrupt level set one (only one!) of the jumpers
				700	IRQ2, IRQ3, IRQ4, IRQ5, IRQ7. The Manufacturer's default is IRQ2.
				701
				702
				703	Configuring the PC130E for Star or Bus Topology
				704	-----------------------------------------------
				705
				706	The single jumper labeled STAR is used to configure the PC130E board for
				707	star or bus topology.
				708	When the jumper is installed, the board may be used in a star network, when
				709	it is removed, the board can be used in a bus topology.
				710
				711
				712	Diagnostic LEDs
				713	---------------
				714
				715	Two diagnostic LEDs are visible on the rear bracket of the board.
				716	The green LED monitors the network activity: the red one shows the
				717	board activity:
				718
				719	Green \| Status Red \| Status
				720	-------\|------------------- ---------\|-------------------
				721	on \| normal activity flash/on \| data transfer
				722	blink \| reconfiguration off \| no data transfer;
				723	off \| defective board or \| incorrect memory or
				724	\| node ID is zero \| I/O address
				725
				726
				727	*****************************************************************************
				728
				729	Standard Microsystems Corp (SMC)
				730	PC500/PC550 Longboard (16-bit cards)
				731	-------------------------------------
				732	- from Juergen Seifert <seifert@htwm.de>
				733
				734
				735	STANDARD MICROSYSTEMS CORPORATION (SMC) ARCNET-PC500/PC550 Long Board
				736	=====================================================================
				737
				738	Note: There is another Version of the PC500 called Short Version, which
				739	is different in hard- and software! The most important differences
				740	are:
				741	- The long board has no Shared memory.
				742	- On the long board the selection of the interrupt is done by binary
				743	coded switch, on the short board directly by jumper.
				744
				745	[Avery's note: pay special attention to that: the long board HAS NO SHARED
				746	MEMORY. This means the current Linux-ARCnet driver can't use these cards.
				747	I have obtained a PC500Longboard and will be doing some experiments on it in
				748	the future, but don't hold your breath. Thanks again to Juergen Seifert for
				749	his advice about this!]
				750
				751	This description has been written by Juergen Seifert <seifert@htwm.de>
				752	using information from the following Original SMC Manual
				753
				754	"Configuration Guide for
				755	SMC ARCNET-PC500/PC550
				756	Series Network Controller Boards
				757	Pub. # 900.033 Rev. A
				758	November, 1989"
				759
				760	ARCNET is a registered trademark of the Datapoint Corporation
				761	SMC is a registered trademark of the Standard Microsystems Corporation
				762
				763	The PC500 is equipped with a standard BNC female connector for connection
				764	to RG-62/U coax cable.
				765	The board is designed both for point-to-point connection in star networks
				766	and for connection to bus networks.
				767
				768	The PC550 is equipped with two modular RJ11-type jacks for connection
				769	to twisted pair wiring.
				770	It can be used in a star or a daisy-chained (BUS) network.
				771
				772	1
				773	0 9 8 7 6 5 4 3 2 1 6 5 4 3 2 1
				774	____________________________________________________________________
				775	< \| SW1 \| \| SW2 \| \|
				776	> \|_____________________\| \|_____________\| \|
				777	< IRQ \|I/O Addr \|
				778	> ___\|
				779	< CR4 \|___\|
				780	> CR3 \|___\|
				781	< ___\|
				782	> N \| \| 8
				783	< o \| \| 7
				784	> d \| S \| 6
				785	< e \| W \| 5
				786	> A \| 3 \| 4
				787	< d \| \| 3
				788	> d \| \| 2
				789	< r \|___\| 1
				790	> \|o\| _____\|
				791	< \|o\| \| J1 \|
				792	> 3 1 JP6 \|_____\|
				793	< \|o\|o\| JP2 \| J2 \|
				794	> \|o\|o\| \|_____\|
				795	< 4 2__ ______________\|
				796	> \| \| \|
				797	<____\| \|_____________________________________________\|
				798
				799	Legend:
				800
				801	SW1 1-6: I/O Base Address Select
				802	7-10: Interrupt Select
				803	SW2 1-6: Reserved for Future Use
				804	SW3 1-8: Node ID Select
				805	JP2 1-4: Extended Timeout Select
				806	JP6 Selected - Star Topology (PC500 only)
				807	Deselected - Bus Topology (PC500 only)
				808	CR3 Green Monitors Network Activity
				809	CR4 Red Monitors Board Activity
				810	J1 BNC RG62/U Connector (PC500 only)
				811	J1 6-position Telephone Jack (PC550 only)
				812	J2 6-position Telephone Jack (PC550 only)
				813
				814	Setting one of the switches to Off/Open means "1", On/Closed means "0".
				815
				816
				817	Setting the Node ID
				818	-------------------
				819
				820	The eight switches in group SW3 are used to set the node ID. Each node
				821	attached to the network must have an unique node ID which must be
				822	different from 0.
				823	Switch 1 serves as the least significant bit (LSB).
				824
				825	The node ID is the sum of the values of all switches set to "1"
				826	These values are:
				827
				828	Switch \| Value
				829	-------\|-------
				830	1 \| 1
				831	2 \| 2
				832	3 \| 4
				833	4 \| 8
				834	5 \| 16
				835	6 \| 32
				836	7 \| 64
				837	8 \| 128
				838
				839	Some Examples:
				840
				841	Switch \| Hex \| Decimal
				842	8 7 6 5 4 3 2 1 \| Node ID \| Node ID
				843	----------------\|---------\|---------
				844	0 0 0 0 0 0 0 0 \| not allowed
				845	0 0 0 0 0 0 0 1 \| 1 \| 1
				846	0 0 0 0 0 0 1 0 \| 2 \| 2
				847	0 0 0 0 0 0 1 1 \| 3 \| 3
				848	. . . \| \|
				849	0 1 0 1 0 1 0 1 \| 55 \| 85
				850	. . . \| \|
				851	1 0 1 0 1 0 1 0 \| AA \| 170
				852	. . . \| \|
				853	1 1 1 1 1 1 0 1 \| FD \| 253
				854	1 1 1 1 1 1 1 0 \| FE \| 254
				855	1 1 1 1 1 1 1 1 \| FF \| 255
				856
				857
				858	Setting the I/O Base Address
				859	----------------------------
				860
				861	The first six switches in switch group SW1 are used to select one
				862	of 32 possible I/O Base addresses using the following table
				863
				864	Switch \| Hex I/O
				865	6 5 4 3 2 1 \| Address
				866	-------------\|--------
				867	0 1 0 0 0 0 \| 200
				868	0 1 0 0 0 1 \| 210
				869	0 1 0 0 1 0 \| 220
				870	0 1 0 0 1 1 \| 230
				871	0 1 0 1 0 0 \| 240
				872	0 1 0 1 0 1 \| 250
				873	0 1 0 1 1 0 \| 260
				874	0 1 0 1 1 1 \| 270
				875	0 1 1 0 0 0 \| 280
				876	0 1 1 0 0 1 \| 290
				877	0 1 1 0 1 0 \| 2A0
				878	0 1 1 0 1 1 \| 2B0
				879	0 1 1 1 0 0 \| 2C0
				880	0 1 1 1 0 1 \| 2D0
				881	0 1 1 1 1 0 \| 2E0 (Manufacturer's default)
				882	0 1 1 1 1 1 \| 2F0
				883	1 1 0 0 0 0 \| 300
				884	1 1 0 0 0 1 \| 310
				885	1 1 0 0 1 0 \| 320
				886	1 1 0 0 1 1 \| 330
				887	1 1 0 1 0 0 \| 340
				888	1 1 0 1 0 1 \| 350
				889	1 1 0 1 1 0 \| 360
				890	1 1 0 1 1 1 \| 370
				891	1 1 1 0 0 0 \| 380
				892	1 1 1 0 0 1 \| 390
				893	1 1 1 0 1 0 \| 3A0
				894	1 1 1 0 1 1 \| 3B0
				895	1 1 1 1 0 0 \| 3C0
				896	1 1 1 1 0 1 \| 3D0
				897	1 1 1 1 1 0 \| 3E0
				898	1 1 1 1 1 1 \| 3F0
				899
				900
				901	Setting the Interrupt
				902	---------------------
				903
				904	Switches seven through ten of switch group SW1 are used to select the
				905	interrupt level. The interrupt level is binary coded, so selections
				906	from 0 to 15 would be possible, but only the following eight values will
				907	be supported: 3, 4, 5, 7, 9, 10, 11, 12.
				908
				909	Switch \| IRQ
				910	10 9 8 7 \|
				911	---------\|--------
				912	0 0 1 1 \| 3
				913	0 1 0 0 \| 4
				914	0 1 0 1 \| 5
				915	0 1 1 1 \| 7
				916	1 0 0 1 \| 9 (=2) (default)
				917	1 0 1 0 \| 10
				918	1 0 1 1 \| 11
				919	1 1 0 0 \| 12
				920
				921
				922	Setting the Timeouts
				923	--------------------
				924
				925	The two jumpers JP2 (1-4) are used to determine the timeout parameters.
				926	These two jumpers are normally left open.
				927	Refer to the COM9026 Data Sheet for alternate configurations.
				928
				929
				930	Configuring the PC500 for Star or Bus Topology
				931	----------------------------------------------
				932
				933	The single jumper labeled JP6 is used to configure the PC500 board for
				934	star or bus topology.
				935	When the jumper is installed, the board may be used in a star network, when
				936	it is removed, the board can be used in a bus topology.
				937
				938
				939	Diagnostic LEDs
				940	---------------
				941
				942	Two diagnostic LEDs are visible on the rear bracket of the board.
				943	The green LED monitors the network activity: the red one shows the
				944	board activity:
				945
				946	Green \| Status Red \| Status
				947	-------\|------------------- ---------\|-------------------
				948	on \| normal activity flash/on \| data transfer
				949	blink \| reconfiguration off \| no data transfer;
				950	off \| defective board or \| incorrect memory or
				951	\| node ID is zero \| I/O address
				952
				953
				954	*****************************************************************************
				955
				956	SMC
				957	PC710 (8-bit card)
				958	------------------
				959	- from J.S. van Oosten <jvoosten@compiler.tdcnet.nl>
				960
				961	Note: this data is gathered by experimenting and looking at info of other
				962	cards. However, I'm sure I got 99% of the settings right.
				963
				964	The SMC710 card resembles the PC270 card, but is much more basic (i.e. no
				965	LEDs, RJ11 jacks, etc.) and 8 bit. Here's a little drawing:
				966
				967	_______________________________________
				968	\| +---------+ +---------+ \|____
				969	\| \| S2 \| \| S1 \| \|
				970	\| +---------+ +---------+ \|
				971	\| \|
				972	\| +===+ __ \|
				973	\| \| R \| \| \| X-tal ###___
				974	\| \| O \| \|__\| ####__'\|
				975	\| \| M \| \|\| ###
				976	\| +===+ \|
				977	\| \|
				978	\| .. JP1 +----------+ \|
				979	\| .. \| big chip \| \|
				980	\| .. \| 90C63 \| \|
				981	\| .. \| \| \|
				982	\| .. +----------+ \|
				983	------- -----------
				984	\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|
				985
				986	The row of jumpers at JP1 actually consists of 8 jumpers, (sometimes
				987	labelled) the same as on the PC270, from top to bottom: EXT2, EXT1, ROM,
				988	IRQ7, IRQ5, IRQ4, IRQ3, IRQ2 (gee, wonder what they would do? :-) )
				989
				990	S1 and S2 perform the same function as on the PC270, only their numbers
				991	are swapped (S1 is the nodeaddress, S2 sets IO- and RAM-address).
				992
				993	I know it works when connected to a PC110 type ARCnet board.
				994
				995
				996	*****************************************************************************
				997
				998	Possibly SMC
				999	LCS-8830(-T) (8 and 16-bit cards)
				1000	---------------------------------
				1001	- from Mathias Katzer <mkatzer@HRZ.Uni-Bielefeld.DE>
				1002	- Marek Michalkiewicz <marekm@i17linuxb.ists.pwr.wroc.pl> says the
				1003	LCS-8830 is slightly different from LCS-8830-T. These are 8 bit, BUS
				1004	only (the JP0 jumper is hardwired), and BNC only.
				1005
				1006	This is a LCS-8830-T made by SMC, I think ('SMC' only appears on one PLCC,
				1007	nowhere else, not even on the few Xeroxed sheets from the manual).
				1008
				1009	SMC ARCnet Board Type LCS-8830-T
				1010
				1011	------------------------------------
				1012	\| \|
				1013	\| JP3 88 8 JP2 \|
				1014	\| ##### \| \ \|
				1015	\| ##### ET1 ET2 ###\|
				1016	\| 8 ###\|
				1017	\| U3 SW 1 JP0 ###\| Phone Jacks
				1018	\| -- ###\|
				1019	\| \| \| \|
				1020	\| \| \| SW2 \|
				1021	\| \| \| \|
				1022	\| \| \| ##### \|
				1023	\| -- ##### #### BNC Connector
				1024	\| ####
				1025	\| 888888 JP1 \|
				1026	\| 234567 \|
				1027	-- -------
				1028	\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|
				1029	--------------------------
				1030
				1031
				1032	SW1: DIP-Switches for Station Address
				1033	SW2: DIP-Switches for Memory Base and I/O Base addresses
				1034
				1035	JP0: If closed, internal termination on (default open)
				1036	JP1: IRQ Jumpers
				1037	JP2: Boot-ROM enabled if closed
				1038	JP3: Jumpers for response timeout
				1039
				1040	U3: Boot-ROM Socket
				1041
				1042
				1043	ET1 ET2 Response Time Idle Time Reconfiguration Time
				1044
				1045	78 86 840
				1046	X 285 316 1680
				1047	X 563 624 1680
				1048	X X 1130 1237 1680
				1049
				1050	(X means closed jumper)
				1051
				1052	(DIP-Switch downwards means "0")
				1053
				1054	The station address is binary-coded with SW1.
				1055
				1056	The I/O base address is coded with DIP-Switches 6,7 and 8 of SW2:
				1057
				1058	Switches Base
				1059	678 Address
				1060	000 260-26f
				1061	100 290-29f
				1062	010 2e0-2ef
				1063	110 2f0-2ff
				1064	001 300-30f
				1065	101 350-35f
				1066	011 380-38f
				1067	111 3e0-3ef
				1068
				1069
				1070	DIP Switches 1-5 of SW2 encode the RAM and ROM Address Range:
				1071
				1072	Switches RAM ROM
				1073	12345 Address Range Address Range
				1074	00000 C:0000-C:07ff C:2000-C:3fff
				1075	10000 C:0800-C:0fff
				1076	01000 C:1000-C:17ff
				1077	11000 C:1800-C:1fff
				1078	00100 C:4000-C:47ff C:6000-C:7fff
				1079	10100 C:4800-C:4fff
				1080	01100 C:5000-C:57ff
				1081	11100 C:5800-C:5fff
				1082	00010 C:C000-C:C7ff C:E000-C:ffff
				1083	10010 C:C800-C:Cfff
				1084	01010 C:D000-C:D7ff
				1085	11010 C:D800-C:Dfff
				1086	00110 D:0000-D:07ff D:2000-D:3fff
				1087	10110 D:0800-D:0fff
				1088	01110 D:1000-D:17ff
				1089	11110 D:1800-D:1fff
				1090	00001 D:4000-D:47ff D:6000-D:7fff
				1091	10001 D:4800-D:4fff
				1092	01001 D:5000-D:57ff
				1093	11001 D:5800-D:5fff
				1094	00101 D:8000-D:87ff D:A000-D:bfff
				1095	10101 D:8800-D:8fff
				1096	01101 D:9000-D:97ff
				1097	11101 D:9800-D:9fff
				1098	00011 D:C000-D:c7ff D:E000-D:ffff
				1099	10011 D:C800-D:cfff
				1100	01011 D:D000-D:d7ff
				1101	11011 D:D800-D:dfff
				1102	00111 E:0000-E:07ff E:2000-E:3fff
				1103	10111 E:0800-E:0fff
				1104	01111 E:1000-E:17ff
				1105	11111 E:1800-E:1fff
				1106
				1107
				1108	*****************************************************************************
				1109
				1110	PureData Corp
				1111	PDI507 (8-bit card)
				1112	--------------------
				1113	- from Mark Rejhon <mdrejhon@magi.com> (slight modifications by Avery)
				1114	- Avery's note: I think PDI508 cards (but definitely NOT PDI508Plus cards)
				1115	are mostly the same as this. PDI508Plus cards appear to be mainly
				1116	software-configured.
				1117
				1118	Jumpers:
				1119	There is a jumper array at the bottom of the card, near the edge
				1120	connector. This array is labelled J1. They control the IRQs and
				1121	something else. Put only one jumper on the IRQ pins.
				1122
				1123	ETS1, ETS2 are for timing on very long distance networks. See the
				1124	more general information near the top of this file.
				1125
				1126	There is a J2 jumper on two pins. A jumper should be put on them,
				1127	since it was already there when I got the card. I don't know what
				1128	this jumper is for though.
				1129
				1130	There is a two-jumper array for J3. I don't know what it is for,
				1131	but there were already two jumpers on it when I got the card. It's
				1132	a six pin grid in a two-by-three fashion. The jumpers were
				1133	configured as follows:
				1134
				1135	.-------.
				1136	o \| o o \|
				1137	:-------: ------> Accessible end of card with connectors
				1138	o \| o o \| in this direction ------->
				1139	`-------'
				1140
				1141	Carl de Billy <CARL@carainfo.com> explains J3 and J4:
				1142
				1143	J3 Diagram:
				1144
				1145	.-------.
				1146	o \| o o \|
				1147	:-------: TWIST Technology
				1148	o \| o o \|
				1149	`-------'
				1150	.-------.
				1151	\| o o \| o
				1152	:-------: COAX Technology
				1153	\| o o \| o
				1154	`-------'
				1155
				1156	- If using coax cable in a bus topology the J4 jumper must be removed;
				1157	place it on one pin.
				1158
				1159	- If using bus topology with twisted pair wiring move the J3
				1160	jumpers so they connect the middle pin and the pins closest to the RJ11
				1161	Connectors. Also the J4 jumper must be removed; place it on one pin of
				1162	J4 jumper for storage.
				1163
				1164	- If using star topology with twisted pair wiring move the J3
				1165	jumpers so they connect the middle pin and the pins closest to the RJ11
				1166	connectors.
				1167
				1168
				1169	DIP Switches:
				1170
				1171	The DIP switches accessible on the accessible end of the card while
				1172	it is installed, is used to set the ARCnet address. There are 8
				1173	switches. Use an address from 1 to 254.
				1174
				1175	Switch No.
				1176	12345678 ARCnet address
				1177	-----------------------------------------
				1178	00000000 FF (Don't use this!)
				1179	00000001 FE
				1180	00000010 FD
				1181	....
				1182	11111101 2
				1183	11111110 1
				1184	11111111 0 (Don't use this!)
				1185
				1186	There is another array of eight DIP switches at the top of the
				1187	card. There are five labelled MS0-MS4 which seem to control the
				1188	memory address, and another three labelled IO0-IO2 which seem to
				1189	control the base I/O address of the card.
				1190
				1191	This was difficult to test by trial and error, and the I/O addresses
				1192	are in a weird order. This was tested by setting the DIP switches,
				1193	rebooting the computer, and attempting to load ARCETHER at various
				1194	addresses (mostly between 0x200 and 0x400). The address that caused
				1195	the red transmit LED to blink, is the one that I thought works.
				1196
				1197	Also, the address 0x3D0 seem to have a special meaning, since the
				1198	ARCETHER packet driver loaded fine, but without the red LED
				1199	blinking. I don't know what 0x3D0 is for though. I recommend using
				1200	an address of 0x300 since Windows may not like addresses below
				1201	0x300.
				1202
				1203	IO Switch No.
				1204	210 I/O address
				1205	-------------------------------
				1206	111 0x260
				1207	110 0x290
				1208	101 0x2E0
				1209	100 0x2F0
				1210	011 0x300
				1211	010 0x350
				1212	001 0x380
				1213	000 0x3E0
				1214
				1215	The memory switches set a reserved address space of 0x1000 bytes
				1216	(0x100 segment units, or 4k). For example if I set an address of
				1217	0xD000, it will use up addresses 0xD000 to 0xD100.
				1218
				1219	The memory switches were tested by booting using QEMM386 stealth,
				1220	and using LOADHI to see what address automatically became excluded
				1221	from the upper memory regions, and then attempting to load ARCETHER
				1222	using these addresses.
				1223
				1224	I recommend using an ARCnet memory address of 0xD000, and putting
				1225	the EMS page frame at 0xC000 while using QEMM stealth mode. That
				1226	way, you get contiguous high memory from 0xD100 almost all the way
				1227	the end of the megabyte.
				1228
				1229	Memory Switch 0 (MS0) didn't seem to work properly when set to OFF
				1230	on my card. It could be malfunctioning on my card. Experiment with
				1231	it ON first, and if it doesn't work, set it to OFF. (It may be a
				1232	modifier for the 0x200 bit?)
				1233
				1234	MS Switch No.
				1235	43210 Memory address
				1236	--------------------------------
				1237	00001 0xE100 (guessed - was not detected by QEMM)
				1238	00011 0xE000 (guessed - was not detected by QEMM)
				1239	00101 0xDD00
				1240	00111 0xDC00
				1241	01001 0xD900
				1242	01011 0xD800
				1243	01101 0xD500
				1244	01111 0xD400
				1245	10001 0xD100
				1246	10011 0xD000
				1247	10101 0xCD00
				1248	10111 0xCC00
				1249	11001 0xC900 (guessed - crashes tested system)
				1250	11011 0xC800 (guessed - crashes tested system)
				1251	11101 0xC500 (guessed - crashes tested system)
				1252	11111 0xC400 (guessed - crashes tested system)
				1253
				1254
				1255	*****************************************************************************
				1256
				1257	CNet Technology Inc.
				1258	120 Series (8-bit cards)
				1259	------------------------
				1260	- from Juergen Seifert <seifert@htwm.de>
				1261
				1262
				1263	CNET TECHNOLOGY INC. (CNet) ARCNET 120A SERIES
				1264	==============================================
				1265
				1266	This description has been written by Juergen Seifert <seifert@htwm.de>
				1267	using information from the following Original CNet Manual
				1268
				1269	"ARCNET
				1270	USER'S MANUAL
				1271	for
				1272	CN120A
				1273	CN120AB
				1274	CN120TP
				1275	CN120ST
				1276	CN120SBT
				1277	P/N:12-01-0007
				1278	Revision 3.00"
				1279
				1280	ARCNET is a registered trademark of the Datapoint Corporation
				1281
				1282	P/N 120A ARCNET 8 bit XT/AT Star
				1283	P/N 120AB ARCNET 8 bit XT/AT Bus
				1284	P/N 120TP ARCNET 8 bit XT/AT Twisted Pair
				1285	P/N 120ST ARCNET 8 bit XT/AT Star, Twisted Pair
				1286	P/N 120SBT ARCNET 8 bit XT/AT Star, Bus, Twisted Pair
				1287
				1288	__________________________________________________________________
				1289	\| \|
				1290	\| ___\|
				1291	\| LED \|___\|
				1292	\| ___\|
				1293	\| N \| \| ID7
				1294	\| o \| \| ID6
				1295	\| d \| S \| ID5
				1296	\| e \| W \| ID4
				1297	\| ___________________ A \| 2 \| ID3
				1298	\| \| \| d \| \| ID2
				1299	\| \| \| 1 2 3 4 5 6 7 8 d \| \| ID1
				1300	\| \| \| _________________ r \|___\| ID0
				1301	\| \| 90C65 \|\| SW1 \| ____\|
				1302	\| JP 8 7 \| \|\|_________________\| \| \|
				1303	\| \|o\|o\| JP1 \| \| \| J2 \|
				1304	\| \|o\|o\| \|oo\| \| \| JP 1 1 1 \| \|
				1305	\| ______________ \| \| 0 1 2 \|____\|
				1306	\| \| PROM \| \|___________________\| \|o\|o\|o\| _____\|
				1307	\| > SOCKET \| JP 6 5 4 3 2 \|o\|o\|o\| \| J1 \|
				1308	\| \|______________\| \|o\|o\|o\|o\|o\| \|o\|o\|o\| \|_____\|
				1309	\|_____ \|o\|o\|o\|o\|o\| ______________\|
				1310	\| \|
				1311	\|_____________________________________________\|
				1312
				1313	Legend:
				1314
				1315	90C65 ARCNET Probe
				1316	S1 1-5: Base Memory Address Select
				1317	6-8: Base I/O Address Select
				1318	S2 1-8: Node ID Select (ID0-ID7)
				1319	JP1 ROM Enable Select
				1320	JP2 IRQ2
				1321	JP3 IRQ3
				1322	JP4 IRQ4
				1323	JP5 IRQ5
				1324	JP6 IRQ7
				1325	JP7/JP8 ET1, ET2 Timeout Parameters
				1326	JP10/JP11 Coax / Twisted Pair Select (CN120ST/SBT only)
				1327	JP12 Terminator Select (CN120AB/ST/SBT only)
				1328	J1 BNC RG62/U Connector (all except CN120TP)
				1329	J2 Two 6-position Telephone Jack (CN120TP/ST/SBT only)
				1330
				1331	Setting one of the switches to Off means "1", On means "0".
				1332
				1333
				1334	Setting the Node ID
				1335	-------------------
				1336
				1337	The eight switches in SW2 are used to set the node ID. Each node attached
				1338	to the network must have an unique node ID which must be different from 0.
				1339	Switch 1 (ID0) serves as the least significant bit (LSB).
				1340
				1341	The node ID is the sum of the values of all switches set to "1"
				1342	These values are:
				1343
				1344	Switch \| Label \| Value
				1345	-------\|-------\|-------
				1346	1 \| ID0 \| 1
				1347	2 \| ID1 \| 2
				1348	3 \| ID2 \| 4
				1349	4 \| ID3 \| 8
				1350	5 \| ID4 \| 16
				1351	6 \| ID5 \| 32
				1352	7 \| ID6 \| 64
				1353	8 \| ID7 \| 128
				1354
				1355	Some Examples:
				1356
				1357	Switch \| Hex \| Decimal
				1358	8 7 6 5 4 3 2 1 \| Node ID \| Node ID
				1359	----------------\|---------\|---------
				1360	0 0 0 0 0 0 0 0 \| not allowed
				1361	0 0 0 0 0 0 0 1 \| 1 \| 1
				1362	0 0 0 0 0 0 1 0 \| 2 \| 2
				1363	0 0 0 0 0 0 1 1 \| 3 \| 3
				1364	. . . \| \|
				1365	0 1 0 1 0 1 0 1 \| 55 \| 85
				1366	. . . \| \|
				1367	1 0 1 0 1 0 1 0 \| AA \| 170
				1368	. . . \| \|
				1369	1 1 1 1 1 1 0 1 \| FD \| 253
				1370	1 1 1 1 1 1 1 0 \| FE \| 254
				1371	1 1 1 1 1 1 1 1 \| FF \| 255
				1372
				1373
				1374	Setting the I/O Base Address
				1375	----------------------------
				1376
				1377	The last three switches in switch block SW1 are used to select one
				1378	of eight possible I/O Base addresses using the following table
				1379
				1380
				1381	Switch \| Hex I/O
				1382	6 7 8 \| Address
				1383	------------\|--------
				1384	ON ON ON \| 260
				1385	OFF ON ON \| 290
				1386	ON OFF ON \| 2E0 (Manufacturer's default)
				1387	OFF OFF ON \| 2F0
				1388	ON ON OFF \| 300
				1389	OFF ON OFF \| 350
				1390	ON OFF OFF \| 380
				1391	OFF OFF OFF \| 3E0
				1392
				1393
				1394	Setting the Base Memory (RAM) buffer Address
				1395	--------------------------------------------
				1396
				1397	The memory buffer (RAM) requires 2K. The base of this buffer can be
				1398	located in any of eight positions. The address of the Boot Prom is
				1399	memory base + 8K or memory base + 0x2000.
				1400	Switches 1-5 of switch block SW1 select the Memory Base address.
				1401
				1402	Switch \| Hex RAM \| Hex ROM
				1403	1 2 3 4 5 \| Address \| Address *)
				1404	--------------------\|---------\|-----------
				1405	ON ON ON ON ON \| C0000 \| C2000
				1406	ON ON OFF ON ON \| C4000 \| C6000
				1407	ON ON ON OFF ON \| CC000 \| CE000
				1408	ON ON OFF OFF ON \| D0000 \| D2000 (Manufacturer's default)
				1409	ON ON ON ON OFF \| D4000 \| D6000
				1410	ON ON OFF ON OFF \| D8000 \| DA000
				1411	ON ON ON OFF OFF \| DC000 \| DE000
				1412	ON ON OFF OFF OFF \| E0000 \| E2000
				1413
				1414	*) To enable the Boot ROM install the jumper JP1
				1415
				1416	Note: Since the switches 1 and 2 are always set to ON it may be possible
				1417	that they can be used to add an offset of 2K, 4K or 6K to the base
				1418	address, but this feature is not documented in the manual and I
				1419	haven't tested it yet.
				1420
				1421
				1422	Setting the Interrupt Line
				1423	--------------------------
				1424
				1425	To select a hardware interrupt level install one (only one!) of the jumpers
				1426	JP2, JP3, JP4, JP5, JP6. JP2 is the default.
				1427
				1428	Jumper \| IRQ
				1429	-------\|-----
				1430	2 \| 2
				1431	3 \| 3
				1432	4 \| 4
				1433	5 \| 5
				1434	6 \| 7
				1435
				1436
				1437	Setting the Internal Terminator on CN120AB/TP/SBT
				1438	--------------------------------------------------
				1439
				1440	The jumper JP12 is used to enable the internal terminator.
				1441
				1442	-----
				1443	0 \| 0 \|
				1444	----- ON \| \| ON
				1445	\| 0 \| \| 0 \|
				1446	\| \| OFF ----- OFF
				1447	\| 0 \| 0
				1448	-----
				1449	Terminator Terminator
				1450	disabled enabled
				1451
				1452
				1453	Selecting the Connector Type on CN120ST/SBT
				1454	-------------------------------------------
				1455
				1456	JP10 JP11 JP10 JP11
				1457	----- -----
				1458	0 0 \| 0 \| \| 0 \|
				1459	----- ----- \| \| \| \|
				1460	\| 0 \| \| 0 \| \| 0 \| \| 0 \|
				1461	\| \| \| \| ----- -----
				1462	\| 0 \| \| 0 \| 0 0
				1463	----- -----
				1464	Coaxial Cable Twisted Pair Cable
				1465	(Default)
				1466
				1467
				1468	Setting the Timeout Parameters
				1469	------------------------------
				1470
				1471	The jumpers labeled EXT1 and EXT2 are used to determine the timeout
				1472	parameters. These two jumpers are normally left open.
				1473
				1474
				1475
				1476	*****************************************************************************
				1477
				1478	CNet Technology Inc.
				1479	160 Series (16-bit cards)
				1480	-------------------------
				1481	- from Juergen Seifert <seifert@htwm.de>
				1482
				1483	CNET TECHNOLOGY INC. (CNet) ARCNET 160A SERIES
				1484	==============================================
				1485
				1486	This description has been written by Juergen Seifert <seifert@htwm.de>
				1487	using information from the following Original CNet Manual
				1488
				1489	"ARCNET
				1490	USER'S MANUAL
				1491	for
				1492	CN160A
				1493	CN160AB
				1494	CN160TP
				1495	P/N:12-01-0006
				1496	Revision 3.00"
				1497
				1498	ARCNET is a registered trademark of the Datapoint Corporation
				1499
				1500	P/N 160A ARCNET 16 bit XT/AT Star
				1501	P/N 160AB ARCNET 16 bit XT/AT Bus
				1502	P/N 160TP ARCNET 16 bit XT/AT Twisted Pair
				1503
				1504	___________________________________________________________________
				1505	< _________________________ ___\|
				1506	> \|oo\| JP2 \| \| LED \|___\|
				1507	< \|oo\| JP1 \| 9026 \| LED \|___\|
				1508	> \|_________________________\| ___\|
				1509	< N \| \| ID7
				1510	> 1 o \| \| ID6
				1511	< 1 2 3 4 5 6 7 8 9 0 d \| S \| ID5
				1512	> _______________ _____________________ e \| W \| ID4
				1513	< \| PROM \| \| SW1 \| A \| 2 \| ID3
				1514	> > SOCKET \| \|_____________________\| d \| \| ID2
				1515	< \|_______________\| \| IO-Base \| MEM \| d \| \| ID1
				1516	> r \|___\| ID0
				1517	< ____\|
				1518	> \| \|
				1519	< \| J1 \|
				1520	> \| \|
				1521	< \|____\|
				1522	> 1 1 1 1 \|
				1523	< 3 4 5 6 7 JP 8 9 0 1 2 3 \|
				1524	> \|o\|o\|o\|o\|o\| \|o\|o\|o\|o\|o\|o\| \|
				1525	< \|o\|o\|o\|o\|o\| __ \|o\|o\|o\|o\|o\|o\| ___________\|
				1526	> \| \| \|
				1527	<____________\| \|_______________________________________\|
				1528
				1529	Legend:
				1530
				1531	9026 ARCNET Probe
				1532	SW1 1-6: Base I/O Address Select
				1533	7-10: Base Memory Address Select
				1534	SW2 1-8: Node ID Select (ID0-ID7)
				1535	JP1/JP2 ET1, ET2 Timeout Parameters
				1536	JP3-JP13 Interrupt Select
				1537	J1 BNC RG62/U Connector (CN160A/AB only)
				1538	J1 Two 6-position Telephone Jack (CN160TP only)
				1539	LED
				1540
				1541	Setting one of the switches to Off means "1", On means "0".
				1542
				1543
				1544	Setting the Node ID
				1545	-------------------
				1546
				1547	The eight switches in SW2 are used to set the node ID. Each node attached
				1548	to the network must have an unique node ID which must be different from 0.
				1549	Switch 1 (ID0) serves as the least significant bit (LSB).
				1550
				1551	The node ID is the sum of the values of all switches set to "1"
				1552	These values are:
				1553
				1554	Switch \| Label \| Value
				1555	-------\|-------\|-------
				1556	1 \| ID0 \| 1
				1557	2 \| ID1 \| 2
				1558	3 \| ID2 \| 4
				1559	4 \| ID3 \| 8
				1560	5 \| ID4 \| 16
				1561	6 \| ID5 \| 32
				1562	7 \| ID6 \| 64
				1563	8 \| ID7 \| 128
				1564
				1565	Some Examples:
				1566
				1567	Switch \| Hex \| Decimal
				1568	8 7 6 5 4 3 2 1 \| Node ID \| Node ID
				1569	----------------\|---------\|---------
				1570	0 0 0 0 0 0 0 0 \| not allowed
				1571	0 0 0 0 0 0 0 1 \| 1 \| 1
				1572	0 0 0 0 0 0 1 0 \| 2 \| 2
				1573	0 0 0 0 0 0 1 1 \| 3 \| 3
				1574	. . . \| \|
				1575	0 1 0 1 0 1 0 1 \| 55 \| 85
				1576	. . . \| \|
				1577	1 0 1 0 1 0 1 0 \| AA \| 170
				1578	. . . \| \|
				1579	1 1 1 1 1 1 0 1 \| FD \| 253
				1580	1 1 1 1 1 1 1 0 \| FE \| 254
				1581	1 1 1 1 1 1 1 1 \| FF \| 255
				1582
				1583
				1584	Setting the I/O Base Address
				1585	----------------------------
				1586
				1587	The first six switches in switch block SW1 are used to select the I/O Base
				1588	address using the following table:
				1589
				1590	Switch \| Hex I/O
				1591	1 2 3 4 5 6 \| Address
				1592	------------------------\|--------
				1593	OFF ON ON OFF OFF ON \| 260
				1594	OFF ON OFF ON ON OFF \| 290
				1595	OFF ON OFF OFF OFF ON \| 2E0 (Manufacturer's default)
				1596	OFF ON OFF OFF OFF OFF \| 2F0
				1597	OFF OFF ON ON ON ON \| 300
				1598	OFF OFF ON OFF ON OFF \| 350
				1599	OFF OFF OFF ON ON ON \| 380
				1600	OFF OFF OFF OFF OFF ON \| 3E0
				1601
				1602	Note: Other IO-Base addresses seem to be selectable, but only the above
				1603	combinations are documented.
				1604
				1605
				1606	Setting the Base Memory (RAM) buffer Address
				1607	--------------------------------------------
				1608
				1609	The switches 7-10 of switch block SW1 are used to select the Memory
				1610	Base address of the RAM (2K) and the PROM.
				1611
				1612	Switch \| Hex RAM \| Hex ROM
				1613	7 8 9 10 \| Address \| Address
				1614	----------------\|---------\|-----------
				1615	OFF OFF ON ON \| C0000 \| C8000
				1616	OFF OFF ON OFF \| D0000 \| D8000 (Default)
				1617	OFF OFF OFF ON \| E0000 \| E8000
				1618
				1619	Note: Other MEM-Base addresses seem to be selectable, but only the above
				1620	combinations are documented.
				1621
				1622
				1623	Setting the Interrupt Line
				1624	--------------------------
				1625
				1626	To select a hardware interrupt level install one (only one!) of the jumpers
				1627	JP3 through JP13 using the following table:
				1628
				1629	Jumper \| IRQ
				1630	-------\|-----------------
				1631	3 \| 14
				1632	4 \| 15
				1633	5 \| 12
				1634	6 \| 11
				1635	7 \| 10
				1636	8 \| 3
				1637	9 \| 4
				1638	10 \| 5
				1639	11 \| 6
				1640	12 \| 7
				1641	13 \| 2 (=9) Default!
				1642
				1643	Note: - Do not use JP11=IRQ6, it may conflict with your Floppy Disk
				1644	Controller
				1645	- Use JP3=IRQ14 only, if you don't have an IDE-, MFM-, or RLL-
				1646	Hard Disk, it may conflict with their controllers
				1647
				1648
				1649	Setting the Timeout Parameters
				1650	------------------------------
				1651
				1652	The jumpers labeled JP1 and JP2 are used to determine the timeout
				1653	parameters. These two jumpers are normally left open.
				1654
				1655
				1656	*****************************************************************************
				1657
				1658	Lantech
				1659	8-bit card, unknown model
				1660	-------------------------
				1661	- from Vlad Lungu <vlungu@ugal.ro> - his e-mail address seemed broken at
				1662	the time I tried to reach him. Sorry Vlad, if you didn't get my reply.
				1663
				1664	________________________________________________________________
				1665	\| 1 8 \|
				1666	\| ___________ __\|
				1667	\| \| SW1 \| LED \|__\|
				1668	\| \|__________\| \|
				1669	\| ___\|
				1670	\| _____________________ \|S \| 8
				1671	\| \| \| \|W \|
				1672	\| \| \| \|2 \|
				1673	\| \| \| \|__\| 1
				1674	\| \| UM9065L \| \|o\| JP4 ____\|____
				1675	\| \| \| \|o\| \| CN \|
				1676	\| \| \| \|________\|
				1677	\| \| \| \|
				1678	\| \|___________________\| \|
				1679	\| \|
				1680	\| \|
				1681	\| _____________ \|
				1682	\| \| \| \|
				1683	\| \| PROM \| \|ooooo\| JP6 \|
				1684	\| \|____________\| \|ooooo\| \|
				1685	\|_____________ _ _\|
				1686	\|____________________________________________\| \|__\|
				1687
				1688
				1689	UM9065L : ARCnet Controller
				1690
				1691	SW 1 : Shared Memory Address and I/O Base
				1692
				1693	ON=0
				1694
				1695	12345\|Memory Address
				1696	-----\|--------------
				1697	00001\| D4000
				1698	00010\| CC000
				1699	00110\| D0000
				1700	01110\| D1000
				1701	01101\| D9000
				1702	10010\| CC800
				1703	10011\| DC800
				1704	11110\| D1800
				1705
				1706	It seems that the bits are considered in reverse order. Also, you must
				1707	observe that some of those addresses are unusual and I didn't probe them; I
				1708	used a memory dump in DOS to identify them. For the 00000 configuration and
				1709	some others that I didn't write here the card seems to conflict with the
				1710	video card (an S3 GENDAC). I leave the full decoding of those addresses to
				1711	you.
				1712
				1713	678\| I/O Address
				1714	---\|------------
				1715	000\| 260
				1716	001\| failed probe
				1717	010\| 2E0
				1718	011\| 380
				1719	100\| 290
				1720	101\| 350
				1721	110\| failed probe
				1722	111\| 3E0
				1723
				1724	SW 2 : Node ID (binary coded)
				1725
				1726	JP 4 : Boot PROM enable CLOSE - enabled
				1727	OPEN - disabled
				1728
				1729	JP 6 : IRQ set (ONLY ONE jumper on 1-5 for IRQ 2-6)
				1730
				1731
				1732	*****************************************************************************
				1733
				1734	Acer
				1735	8-bit card, Model 5210-003
				1736	--------------------------
				1737	- from Vojtech Pavlik <vojtech@suse.cz> using portions of the existing
				1738	arcnet-hardware file.
				1739
				1740	This is a 90C26 based card. Its configuration seems similar to the SMC
				1741	PC100, but has some additional jumpers I don't know the meaning of.
				1742
				1743	__
				1744	\| \|
				1745	___________\|__\|_________________________
				1746	\| \| \| \|
				1747	\| \| BNC \| \|
				1748	\| \|______\| ___\|
				1749	\| _____________________ \|___
				1750	\| \| \| \|
				1751	\| \| Hybrid IC \| \|
				1752	\| \| \| o\|o J1 \|
				1753	\| \|_____________________\| 8\|8 \|
				1754	\| 8\|8 J5 \|
				1755	\| o\|o \|
				1756	\| 8\|8 \|
				1757	\|__ 8\|8 \|
				1758	(\|__\| LED o\|o \|
				1759	\| 8\|8 \|
				1760	\| 8\|8 J15 \|
				1761	\| \|
				1762	\| _____ \|
				1763	\| \| \| _____ \|
				1764	\| \| \| \| \| ___\|
				1765	\| \| \| \| \| \|
				1766	\| _____ \| ROM \| \| UFS \| \|
				1767	\| \| \| \| \| \| \| \|
				1768	\| \| \| ___ \| \| \| \| \|
				1769	\| \| \| \| \| \|__.__\| \|__.__\| \|
				1770	\| \| NCR \| \|XTL\| _____ _____ \|
				1771	\| \| \| \|___\| \| \| \| \| \|
				1772	\| \|90C26\| \| \| \| \| \|
				1773	\| \| \| \| RAM \| \| UFS \| \|
				1774	\| \| \| J17 o\|o \| \| \| \| \|
				1775	\| \| \| J16 o\|o \| \| \| \| \|
				1776	\| \|__.__\| \|__.__\| \|__.__\| \|
				1777	\| ___ \|
				1778	\| \| \|8 \|
				1779	\| \|SW2\| \|
				1780	\| \| \| \|
				1781	\| \|___\|1 \|
				1782	\| ___ \|
				1783	\| \| \|10 J18 o\|o \|
				1784	\| \| \| o\|o \|
				1785	\| \|SW1\| o\|o \|
				1786	\| \| \| J21 o\|o \|
				1787	\| \|___\|1 \|
				1788	\| \|
				1789	\|____________________________________\|
				1790
				1791
				1792	Legend:
				1793
				1794	90C26 ARCNET Chip
				1795	XTL 20 MHz Crystal
				1796	SW1 1-6 Base I/O Address Select
				1797	7-10 Memory Address Select
				1798	SW2 1-8 Node ID Select (ID0-ID7)
				1799	J1-J5 IRQ Select
				1800	J6-J21 Unknown (Probably extra timeouts & ROM enable ...)
				1801	LED1 Activity LED
				1802	BNC Coax connector (STAR ARCnet)
				1803	RAM 2k of SRAM
				1804	ROM Boot ROM socket
				1805	UFS Unidentified Flying Sockets
				1806
				1807
				1808	Setting the Node ID
				1809	-------------------
				1810
				1811	The eight switches in SW2 are used to set the node ID. Each node attached
				1812	to the network must have an unique node ID which must not be 0.
				1813	Switch 1 (ID0) serves as the least significant bit (LSB).
				1814
				1815	Setting one of the switches to OFF means "1", ON means "0".
				1816
				1817	The node ID is the sum of the values of all switches set to "1"
				1818	These values are:
				1819
				1820	Switch \| Value
				1821	-------\|-------
				1822	1 \| 1
				1823	2 \| 2
				1824	3 \| 4
				1825	4 \| 8
				1826	5 \| 16
				1827	6 \| 32
				1828	7 \| 64
				1829	8 \| 128
				1830
				1831	Don't set this to 0 or 255; these values are reserved.
				1832
				1833
				1834	Setting the I/O Base Address
				1835	----------------------------
				1836
				1837	The switches 1 to 6 of switch block SW1 are used to select one
				1838	of 32 possible I/O Base addresses using the following tables
				1839
				1840	\| Hex
				1841	Switch \| Value
				1842	-------\|-------
				1843	1 \| 200
				1844	2 \| 100
				1845	3 \| 80
				1846	4 \| 40
				1847	5 \| 20
				1848	6 \| 10
				1849
				1850	The I/O address is sum of all switches set to "1". Remember that
				1851	the I/O address space bellow 0x200 is RESERVED for mainboard, so
				1852	switch 1 should be ALWAYS SET TO OFF.
				1853
				1854
				1855	Setting the Base Memory (RAM) buffer Address
				1856	--------------------------------------------
				1857
				1858	The memory buffer (RAM) requires 2K. The base of this buffer can be
				1859	located in any of sixteen positions. However, the addresses below
				1860	A0000 are likely to cause system hang because there's main RAM.
				1861
				1862	Jumpers 7-10 of switch block SW1 select the Memory Base address.
				1863
				1864	Switch \| Hex RAM
				1865	7 8 9 10 \| Address
				1866	----------------\|---------
				1867	OFF OFF OFF OFF \| F0000 (conflicts with main BIOS)
				1868	OFF OFF OFF ON \| E0000
				1869	OFF OFF ON OFF \| D0000
				1870	OFF OFF ON ON \| C0000 (conflicts with video BIOS)
				1871	OFF ON OFF OFF \| B0000 (conflicts with mono video)
				1872	OFF ON OFF ON \| A0000 (conflicts with graphics)
				1873
				1874
				1875	Setting the Interrupt Line
				1876	--------------------------
				1877
				1878	Jumpers 1-5 of the jumper block J1 control the IRQ level. ON means
				1879	shorted, OFF means open.
				1880
				1881	Jumper \| IRQ
				1882	1 2 3 4 5 \|
				1883	----------------------------
				1884	ON OFF OFF OFF OFF \| 7
				1885	OFF ON OFF OFF OFF \| 5
				1886	OFF OFF ON OFF OFF \| 4
				1887	OFF OFF OFF ON OFF \| 3
				1888	OFF OFF OFF OFF ON \| 2
				1889
				1890
				1891	Unknown jumpers & sockets
				1892	-------------------------
				1893
				1894	I know nothing about these. I just guess that J16&J17 are timeout
				1895	jumpers and maybe one of J18-J21 selects ROM. Also J6-J10 and
				1896	J11-J15 are connecting IRQ2-7 to some pins on the UFSs. I can't
				1897	guess the purpose.
				1898
				1899
				1900	*****************************************************************************
				1901
				1902	Datapoint?
				1903	LAN-ARC-8, an 8-bit card
				1904	------------------------
				1905	- from Vojtech Pavlik <vojtech@suse.cz>
				1906
				1907	This is another SMC 90C65-based ARCnet card. I couldn't identify the
				1908	manufacturer, but it might be DataPoint, because the card has the
				1909	original arcNet logo in its upper right corner.
				1910
				1911	_______________________________________________________
				1912	\| _________ \|
				1913	\| \| SW2 \| ON arcNet \|
				1914	\| \|_________\| OFF ___\|
				1915	\| _____________ 1 ______ 8 \| \| 8
				1916	\| \| \| SW1 \| XTAL \| ____________ \| S \|
				1917	\| > RAM (2k) \| \|______\|\| \| \| W \|
				1918	\| \|_____________\| \| H \| \| 3 \|
				1919	\| _________\|_____ y \| \|___\| 1
				1920	\| _________ \| \| \|b \| \|
				1921	\| \|_________\| \| \| \|r \| \|
				1922	\| \| SMC \| \|i \| \|
				1923	\| \| 90C65\| \|d \| \|
				1924	\| _________ \| \| \| \| \|
				1925	\| \| SW1 \| ON \| \| \|I \| \|
				1926	\| \|_________\| OFF \|_________\|_____/C \| _____\|
				1927	\| 1 8 \| \| \| \|___
				1928	\| ______________ \| \| \| BNC \|___\|
				1929	\| \| \| \|____________\| \|_____\|
				1930	\| > EPROM SOCKET \| _____________ \|
				1931	\| \|______________\| \|_____________\| \|
				1932	\| ______________\|
				1933	\| \|
				1934	\|________________________________________\|
				1935
				1936	Legend:
				1937
				1938	90C65 ARCNET Chip
				1939	SW1 1-5: Base Memory Address Select
				1940	6-8: Base I/O Address Select
				1941	SW2 1-8: Node ID Select
				1942	SW3 1-5: IRQ Select
				1943	6-7: Extra Timeout
				1944	8 : ROM Enable
				1945	BNC Coax connector
				1946	XTAL 20 MHz Crystal
				1947
				1948
				1949	Setting the Node ID
				1950	-------------------
				1951
				1952	The eight switches in SW3 are used to set the node ID. Each node attached
				1953	to the network must have an unique node ID which must not be 0.
				1954	Switch 1 serves as the least significant bit (LSB).
				1955
				1956	Setting one of the switches to Off means "1", On means "0".
				1957
				1958	The node ID is the sum of the values of all switches set to "1"
				1959	These values are:
				1960
				1961	Switch \| Value
				1962	-------\|-------
				1963	1 \| 1
				1964	2 \| 2
				1965	3 \| 4
				1966	4 \| 8
				1967	5 \| 16
				1968	6 \| 32
				1969	7 \| 64
				1970	8 \| 128
				1971
				1972
				1973	Setting the I/O Base Address
				1974	----------------------------
				1975
				1976	The last three switches in switch block SW1 are used to select one
				1977	of eight possible I/O Base addresses using the following table
				1978
				1979
				1980	Switch \| Hex I/O
				1981	6 7 8 \| Address
				1982	------------\|--------
				1983	ON ON ON \| 260
				1984	OFF ON ON \| 290
				1985	ON OFF ON \| 2E0 (Manufacturer's default)
				1986	OFF OFF ON \| 2F0
				1987	ON ON OFF \| 300
				1988	OFF ON OFF \| 350
				1989	ON OFF OFF \| 380
				1990	OFF OFF OFF \| 3E0
				1991
				1992
				1993	Setting the Base Memory (RAM) buffer Address
				1994	--------------------------------------------
				1995
				1996	The memory buffer (RAM) requires 2K. The base of this buffer can be
				1997	located in any of eight positions. The address of the Boot Prom is
				1998	memory base + 0x2000.
				1999	Jumpers 3-5 of switch block SW1 select the Memory Base address.
				2000
				2001	Switch \| Hex RAM \| Hex ROM
				2002	1 2 3 4 5 \| Address \| Address *)
				2003	--------------------\|---------\|-----------
				2004	ON ON ON ON ON \| C0000 \| C2000
				2005	ON ON OFF ON ON \| C4000 \| C6000
				2006	ON ON ON OFF ON \| CC000 \| CE000
				2007	ON ON OFF OFF ON \| D0000 \| D2000 (Manufacturer's default)
				2008	ON ON ON ON OFF \| D4000 \| D6000
				2009	ON ON OFF ON OFF \| D8000 \| DA000
				2010	ON ON ON OFF OFF \| DC000 \| DE000
				2011	ON ON OFF OFF OFF \| E0000 \| E2000
				2012
				2013	*) To enable the Boot ROM set the switch 8 of switch block SW3 to position ON.
				2014
				2015	The switches 1 and 2 probably add 0x0800 and 0x1000 to RAM base address.
				2016
				2017
				2018	Setting the Interrupt Line
				2019	--------------------------
				2020
				2021	Switches 1-5 of the switch block SW3 control the IRQ level.
				2022
				2023	Jumper \| IRQ
				2024	1 2 3 4 5 \|
				2025	----------------------------
				2026	ON OFF OFF OFF OFF \| 3
				2027	OFF ON OFF OFF OFF \| 4
				2028	OFF OFF ON OFF OFF \| 5
				2029	OFF OFF OFF ON OFF \| 7
				2030	OFF OFF OFF OFF ON \| 2
				2031
				2032
				2033	Setting the Timeout Parameters
				2034	------------------------------
				2035
				2036	The switches 6-7 of the switch block SW3 are used to determine the timeout
				2037	parameters. These two switches are normally left in the OFF position.
				2038
				2039
				2040	*****************************************************************************
				2041
				2042	Topware
				2043	8-bit card, TA-ARC/10
				2044	-------------------------
				2045	- from Vojtech Pavlik <vojtech@suse.cz>
				2046
				2047	This is another very similar 90C65 card. Most of the switches and jumpers
				2048	are the same as on other clones.
				2049
				2050	_____________________________________________________________________
				2051	\| ___________ \| \| ______ \|
				2052	\| \|SW2 NODE ID\| \| \| \| XTAL \| \|
				2053	\| \|___________\| \| Hybrid IC \| \|______\| \|
				2054	\| ___________ \| \| __\|
				2055	\| \|SW1 MEM+I/O\| \|_________________________\| LED1\|__\|)
				2056	\| \|___________\| 1 2 \|
				2057	\| J3 \|o\|o\| TIMEOUT ______\|
				2058	\| ______________ \|o\|o\| \| \|
				2059	\| \| \| ___________________ \| RJ \|
				2060	\| > EPROM SOCKET \| \| \ \|------\|
				2061	\|J2 \|______________\| \| \| \| \|
				2062	\|\|o\| \| \| \|______\|
				2063	\|\|o\| ROM ENABLE \| SMC \| _________ \|
				2064	\| _____________ \| 90C65 \| \|_________\| _____\|
				2065	\| \| \| \| \| \| \|___
				2066	\| > RAM (2k) \| \| \| \| BNC \|___\|
				2067	\| \|_____________\| \| \| \|_____\|
				2068	\| \|____________________\| \|
				2069	\| ________ IRQ 2 3 4 5 7 ___________ \|
				2070	\|\|________\| \|o\|o\|o\|o\|o\| \|___________\| \|
				2071	\|________ J1\|o\|o\|o\|o\|o\| ______________\|
				2072	\| \|
				2073	\|_____________________________________________\|
				2074
				2075	Legend:
				2076
				2077	90C65 ARCNET Chip
				2078	XTAL 20 MHz Crystal
				2079	SW1 1-5 Base Memory Address Select
				2080	6-8 Base I/O Address Select
				2081	SW2 1-8 Node ID Select (ID0-ID7)
				2082	J1 IRQ Select
				2083	J2 ROM Enable
				2084	J3 Extra Timeout
				2085	LED1 Activity LED
				2086	BNC Coax connector (BUS ARCnet)
				2087	RJ Twisted Pair Connector (daisy chain)
				2088
				2089
				2090	Setting the Node ID
				2091	-------------------
				2092
				2093	The eight switches in SW2 are used to set the node ID. Each node attached to
				2094	the network must have an unique node ID which must not be 0. Switch 1 (ID0)
				2095	serves as the least significant bit (LSB).
				2096
				2097	Setting one of the switches to Off means "1", On means "0".
				2098
				2099	The node ID is the sum of the values of all switches set to "1"
				2100	These values are:
				2101
				2102	Switch \| Label \| Value
				2103	-------\|-------\|-------
				2104	1 \| ID0 \| 1
				2105	2 \| ID1 \| 2
				2106	3 \| ID2 \| 4
				2107	4 \| ID3 \| 8
				2108	5 \| ID4 \| 16
				2109	6 \| ID5 \| 32
				2110	7 \| ID6 \| 64
				2111	8 \| ID7 \| 128
				2112
				2113	Setting the I/O Base Address
				2114	----------------------------
				2115
				2116	The last three switches in switch block SW1 are used to select one
				2117	of eight possible I/O Base addresses using the following table:
				2118
				2119
				2120	Switch \| Hex I/O
				2121	6 7 8 \| Address
				2122	------------\|--------
				2123	ON ON ON \| 260 (Manufacturer's default)
				2124	OFF ON ON \| 290
				2125	ON OFF ON \| 2E0
				2126	OFF OFF ON \| 2F0
				2127	ON ON OFF \| 300
				2128	OFF ON OFF \| 350
				2129	ON OFF OFF \| 380
				2130	OFF OFF OFF \| 3E0
				2131
				2132
				2133	Setting the Base Memory (RAM) buffer Address
				2134	--------------------------------------------
				2135
				2136	The memory buffer (RAM) requires 2K. The base of this buffer can be
				2137	located in any of eight positions. The address of the Boot Prom is
				2138	memory base + 0x2000.
				2139	Jumpers 3-5 of switch block SW1 select the Memory Base address.
				2140
				2141	Switch \| Hex RAM \| Hex ROM
				2142	1 2 3 4 5 \| Address \| Address *)
				2143	--------------------\|---------\|-----------
				2144	ON ON ON ON ON \| C0000 \| C2000
				2145	ON ON OFF ON ON \| C4000 \| C6000 (Manufacturer's default)
				2146	ON ON ON OFF ON \| CC000 \| CE000
				2147	ON ON OFF OFF ON \| D0000 \| D2000
				2148	ON ON ON ON OFF \| D4000 \| D6000
				2149	ON ON OFF ON OFF \| D8000 \| DA000
				2150	ON ON ON OFF OFF \| DC000 \| DE000
				2151	ON ON OFF OFF OFF \| E0000 \| E2000
				2152
				2153	*) To enable the Boot ROM short the jumper J2.
				2154
				2155	The jumpers 1 and 2 probably add 0x0800 and 0x1000 to RAM address.
				2156
				2157
				2158	Setting the Interrupt Line
				2159	--------------------------
				2160
				2161	Jumpers 1-5 of the jumper block J1 control the IRQ level. ON means
				2162	shorted, OFF means open.
				2163
				2164	Jumper \| IRQ
				2165	1 2 3 4 5 \|
				2166	----------------------------
				2167	ON OFF OFF OFF OFF \| 2
				2168	OFF ON OFF OFF OFF \| 3
				2169	OFF OFF ON OFF OFF \| 4
				2170	OFF OFF OFF ON OFF \| 5
				2171	OFF OFF OFF OFF ON \| 7
				2172
				2173
				2174	Setting the Timeout Parameters
				2175	------------------------------
				2176
				2177	The jumpers J3 are used to set the timeout parameters. These two
				2178	jumpers are normally left open.
				2179
				2180
				2181	*****************************************************************************
				2182
				2183	Thomas-Conrad
				2184	Model #500-6242-0097 REV A (8-bit card)
				2185	---------------------------------------
				2186	- from Lars Karlsson <100617.3473@compuserve.com>
				2187
				2188	________________________________________________________
				2189	\| ________ ________ \|_____
				2190	\| \|........\| \|........\| \|
				2191	\| \|________\| \|________\| ___\|
				2192	\| SW 3 SW 1 \| \|
				2193	\| Base I/O Base Addr. Station \| \|
				2194	\| address \| \|
				2195	\| ______ switch \| \|
				2196	\| \| \| \| \|
				2197	\| \| \| \|___\|
				2198	\| \| \| ______ \|___._
				2199	\| \|______\| \|______\| ____\| BNC
				2200	\| Jumper- _____\| Connector
				2201	\| Main chip block _ __\| '
				2202	\| \| \| \| RJ Connector
				2203	\| \|_\| \| with 110 Ohm
				2204	\| \|__ Terminator
				2205	\| ___________ __\|
				2206	\| \|...........\| \| RJ-jack
				2207	\| \|...........\| _____ \| (unused)
				2208	\| \|___________\| \|_____\| \|__
				2209	\| Boot PROM socket IRQ-jumpers \|_ Diagnostic
				2210	\|________ __ _\| LED (red)
				2211	\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|
				2212	\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|________\|
				2213	\|
				2214	\|
				2215
				2216	And here are the settings for some of the switches and jumpers on the cards.
				2217
				2218
				2219	I/O
				2220
				2221	1 2 3 4 5 6 7 8
				2222
				2223	2E0----- 0 0 0 1 0 0 0 1
				2224	2F0----- 0 0 0 1 0 0 0 0
				2225	300----- 0 0 0 0 1 1 1 1
				2226	350----- 0 0 0 0 1 1 1 0
				2227
				2228	"0" in the above example means switch is off "1" means that it is on.
				2229
				2230
				2231	ShMem address.
				2232
				2233	1 2 3 4 5 6 7 8
				2234
				2235	CX00--0 0 1 1 \| \| \|
				2236	DX00--0 0 1 0 \|
				2237	X000--------- 1 1 \|
				2238	X400--------- 1 0 \|
				2239	X800--------- 0 1 \|
				2240	XC00--------- 0 0
				2241	ENHANCED----------- 1
				2242	COMPATIBLE--------- 0
				2243
				2244
				2245	IRQ
				2246
				2247
				2248	3 4 5 7 2
				2249	. . . . .
				2250	. . . . .
				2251
				2252
				2253	There is a DIP-switch with 8 switches, used to set the shared memory address
				2254	to be used. The first 6 switches set the address, the 7th doesn't have any
				2255	function, and the 8th switch is used to select "compatible" or "enhanced".
				2256	When I got my two cards, one of them had this switch set to "enhanced". That
				2257	card didn't work at all, it wasn't even recognized by the driver. The other
				2258	card had this switch set to "compatible" and it behaved absolutely normally. I
				2259	guess that the switch on one of the cards, must have been changed accidentally
				2260	when the card was taken out of its former host. The question remains
				2261	unanswered, what is the purpose of the "enhanced" position?
				2262
				2263	[Avery's note: "enhanced" probably either disables shared memory (use IO
				2264	ports instead) or disables IO ports (use memory addresses instead). This
				2265	varies by the type of card involved. I fail to see how either of these
				2266	enhance anything. Send me more detailed information about this mode, or
				2267	just use "compatible" mode instead.]
				2268
				2269
				2270	*****************************************************************************
				2271
				2272	Waterloo Microsystems Inc. ??
				2273	8-bit card (C) 1985
				2274	-------------------
				2275	- from Robert Michael Best <rmb117@cs.usask.ca>
				2276
				2277	[Avery's note: these don't work with my driver for some reason. These cards
				2278	SEEM to have settings similar to the PDI508Plus, which is
				2279	software-configured and doesn't work with my driver either. The "Waterloo
				2280	chip" is a boot PROM, probably designed specifically for the University of
				2281	Waterloo. If you have any further information about this card, please
				2282	e-mail me.]
				2283
				2284	The probe has not been able to detect the card on any of the J2 settings,
				2285	and I tried them again with the "Waterloo" chip removed.
				2286
				2287	_____________________________________________________________________
				2288	\| \/ \/ ___ __ __ \|
				2289	\| C4 C4 \|^\| \| M \|\| ^ \|\|^\| \|
				2290	\| -- -- \|_\| \| 5 \|\| \|\| \| C3 \|
				2291	\| \/ \/ C10 \|___\|\| \|\|_\| \|
				2292	\| C4 C4 _ _ \| \| ?? \|
				2293	\| -- -- \| \/ \|\| \| \|
				2294	\| \| \|\| \| \|
				2295	\| \| \|\| C1 \| \|
				2296	\| \| \|\| \| \/ _____\|
				2297	\| \| C6 \|\| \| C9 \| \|___
				2298	\| \| \|\| \| -- \| BNC \|___\|
				2299	\| \| \|\| \| >C7\| \|_____\|
				2300	\| \| \|\| \| \|
				2301	\| __ __ \|____\|\|_____\| 1 2 3 6 \|
				2302	\|\| ^ \| >C4\| \|o\|o\|o\|o\|o\|o\| J2 >C4\| \|
				2303	\|\| \| \|o\|o\|o\|o\|o\|o\| \|
				2304	\|\| C2 \| >C4\| >C4\| \|
				2305	\|\| \| >C8\| \|
				2306	\|\| \| 2 3 4 5 6 7 IRQ >C4\| \|
				2307	\|\|_____\| \|o\|o\|o\|o\|o\|o\| J3 \|
				2308	\|_______ \|o\|o\|o\|o\|o\|o\| _______________\|
				2309	\| \|
				2310	\|_____________________________________________\|
				2311
				2312	C1 -- "COM9026
				2313	SMC 8638"
				2314	In a chip socket.
				2315
				2316	C2 -- "@Copyright
				2317	Waterloo Microsystems Inc.
				2318	1985"
				2319	In a chip Socket with info printed on a label covering a round window
				2320	showing the circuit inside. (The window indicates it is an EPROM chip.)
				2321
				2322	C3 -- "COM9032
				2323	SMC 8643"
				2324	In a chip socket.
				2325
				2326	C4 -- "74LS"
				2327	9 total no sockets.
				2328
				2329	M5 -- "50006-136
				2330	20.000000 MHZ
				2331	MTQ-T1-S3
				2332	0 M-TRON 86-40"
				2333	Metallic case with 4 pins, no socket.
				2334
				2335	C6 -- "MOSTEK@TC8643
				2336	MK6116N-20
				2337	MALAYSIA"
				2338	No socket.
				2339
				2340	C7 -- No stamp or label but in a 20 pin chip socket.
				2341
				2342	C8 -- "PAL10L8CN
				2343	8623"
				2344	In a 20 pin socket.
				2345
				2346	C9 -- "PAl16R4A-2CN
				2347	8641"
				2348	In a 20 pin socket.
				2349
				2350	C10 -- "M8640
				2351	NMC
				2352	9306N"
				2353	In an 8 pin socket.
				2354
				2355	?? -- Some components on a smaller board and attached with 20 pins all
				2356	along the side closest to the BNC connector. The are coated in a dark
				2357	resin.
				2358
				2359	On the board there are two jumper banks labeled J2 and J3. The
				2360	manufacturer didn't put a J1 on the board. The two boards I have both
				2361	came with a jumper box for each bank.
				2362
				2363	J2 -- Numbered 1 2 3 4 5 6.
				2364	4 and 5 are not stamped due to solder points.
				2365
				2366	J3 -- IRQ 2 3 4 5 6 7
				2367
				2368	The board itself has a maple leaf stamped just above the irq jumpers
				2369	and "-2 46-86" beside C2. Between C1 and C6 "ASS 'Y 300163" and "@1986
				2370	CORMAN CUSTOM ELECTRONICS CORP." stamped just below the BNC connector.
				2371	Below that "MADE IN CANADA"
				2372
				2373
				2374	*****************************************************************************
				2375
				2376	No Name
				2377	8-bit cards, 16-bit cards
				2378	-------------------------
				2379	- from Juergen Seifert <seifert@htwm.de>
				2380
				2381	NONAME 8-BIT ARCNET
				2382	===================
				2383
				2384	I have named this ARCnet card "NONAME", since there is no name of any
				2385	manufacturer on the Installation manual nor on the shipping box. The only
				2386	hint to the existence of a manufacturer at all is written in copper,
				2387	it is "Made in Taiwan"
				2388
				2389	This description has been written by Juergen Seifert <seifert@htwm.de>
				2390	using information from the Original
				2391	"ARCnet Installation Manual"
				2392
				2393
				2394	________________________________________________________________
				2395	\| \|STAR\| BUS\| T/P\| \|
				2396	\| \|____\|____\|____\| \|
				2397	\| _____________________ \|
				2398	\| \| \| \|
				2399	\| \| \| \|
				2400	\| \| \| \|
				2401	\| \| SMC \| \|
				2402	\| \| \| \|
				2403	\| \| COM90C65 \| \|
				2404	\| \| \| \|
				2405	\| \| \| \|
				2406	\| \|__________-__________\| \|
				2407	\| _____\|
				2408	\| _______________ \| CN \|
				2409	\| \| PROM \| \|_____\|
				2410	\| > SOCKET \| \|
				2411	\| \|_______________\| 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 \|
				2412	\| _______________ _______________ \|
				2413	\| \|o\|o\|o\|o\|o\|o\|o\|o\| \| SW1 \|\| SW2 \|\|
				2414	\| \|o\|o\|o\|o\|o\|o\|o\|o\| \|_______________\|\|_______________\|\|
				2415	\|___ 2 3 4 5 7 E E R Node ID IOB__\|__MEM____\|
				2416	\| \ IRQ / T T O \|
				2417	\|__________________1_2_M______________________\|
				2418
				2419	Legend:
				2420
				2421	COM90C65: ARCnet Probe
				2422	S1 1-8: Node ID Select
				2423	S2 1-3: I/O Base Address Select
				2424	4-6: Memory Base Address Select
				2425	7-8: RAM Offset Select
				2426	ET1, ET2 Extended Timeout Select
				2427	ROM ROM Enable Select
				2428	CN RG62 Coax Connector
				2429	STAR\| BUS \| T/P Three fields for placing a sign (colored circle)
				2430	indicating the topology of the card
				2431
				2432	Setting one of the switches to Off means "1", On means "0".
				2433
				2434
				2435	Setting the Node ID
				2436	-------------------
				2437
				2438	The eight switches in group SW1 are used to set the node ID.
				2439	Each node attached to the network must have an unique node ID which
				2440	must be different from 0.
				2441	Switch 8 serves as the least significant bit (LSB).
				2442
				2443	The node ID is the sum of the values of all switches set to "1"
				2444	These values are:
				2445
				2446	Switch \| Value
				2447	-------\|-------
				2448	8 \| 1
				2449	7 \| 2
				2450	6 \| 4
				2451	5 \| 8
				2452	4 \| 16
				2453	3 \| 32
				2454	2 \| 64
				2455	1 \| 128
				2456
				2457	Some Examples:
				2458
				2459	Switch \| Hex \| Decimal
				2460	1 2 3 4 5 6 7 8 \| Node ID \| Node ID
				2461	----------------\|---------\|---------
				2462	0 0 0 0 0 0 0 0 \| not allowed
				2463	0 0 0 0 0 0 0 1 \| 1 \| 1
				2464	0 0 0 0 0 0 1 0 \| 2 \| 2
				2465	0 0 0 0 0 0 1 1 \| 3 \| 3
				2466	. . . \| \|
				2467	0 1 0 1 0 1 0 1 \| 55 \| 85
				2468	. . . \| \|
				2469	1 0 1 0 1 0 1 0 \| AA \| 170
				2470	. . . \| \|
				2471	1 1 1 1 1 1 0 1 \| FD \| 253
				2472	1 1 1 1 1 1 1 0 \| FE \| 254
				2473	1 1 1 1 1 1 1 1 \| FF \| 255
				2474
				2475
				2476	Setting the I/O Base Address
				2477	----------------------------
				2478
				2479	The first three switches in switch group SW2 are used to select one
				2480	of eight possible I/O Base addresses using the following table
				2481
				2482	Switch \| Hex I/O
				2483	1 2 3 \| Address
				2484	------------\|--------
				2485	ON ON ON \| 260
				2486	ON ON OFF \| 290
				2487	ON OFF ON \| 2E0 (Manufacturer's default)
				2488	ON OFF OFF \| 2F0
				2489	OFF ON ON \| 300
				2490	OFF ON OFF \| 350
				2491	OFF OFF ON \| 380
				2492	OFF OFF OFF \| 3E0
				2493
				2494
				2495	Setting the Base Memory (RAM) buffer Address
				2496	--------------------------------------------
				2497
				2498	The memory buffer requires 2K of a 16K block of RAM. The base of this
				2499	16K block can be located in any of eight positions.
				2500	Switches 4-6 of switch group SW2 select the Base of the 16K block.
				2501	Within that 16K address space, the buffer may be assigned any one of four
				2502	positions, determined by the offset, switches 7 and 8 of group SW2.
				2503
				2504	Switch \| Hex RAM \| Hex ROM
				2505	4 5 6 7 8 \| Address \| Address *)
				2506	-----------\|---------\|-----------
				2507	0 0 0 0 0 \| C0000 \| C2000
				2508	0 0 0 0 1 \| C0800 \| C2000
				2509	0 0 0 1 0 \| C1000 \| C2000
				2510	0 0 0 1 1 \| C1800 \| C2000
				2511	\| \|
				2512	0 0 1 0 0 \| C4000 \| C6000
				2513	0 0 1 0 1 \| C4800 \| C6000
				2514	0 0 1 1 0 \| C5000 \| C6000
				2515	0 0 1 1 1 \| C5800 \| C6000
				2516	\| \|
				2517	0 1 0 0 0 \| CC000 \| CE000
				2518	0 1 0 0 1 \| CC800 \| CE000
				2519	0 1 0 1 0 \| CD000 \| CE000
				2520	0 1 0 1 1 \| CD800 \| CE000
				2521	\| \|
				2522	0 1 1 0 0 \| D0000 \| D2000 (Manufacturer's default)
				2523	0 1 1 0 1 \| D0800 \| D2000
				2524	0 1 1 1 0 \| D1000 \| D2000
				2525	0 1 1 1 1 \| D1800 \| D2000
				2526	\| \|
				2527	1 0 0 0 0 \| D4000 \| D6000
				2528	1 0 0 0 1 \| D4800 \| D6000
				2529	1 0 0 1 0 \| D5000 \| D6000
				2530	1 0 0 1 1 \| D5800 \| D6000
				2531	\| \|
				2532	1 0 1 0 0 \| D8000 \| DA000
				2533	1 0 1 0 1 \| D8800 \| DA000
				2534	1 0 1 1 0 \| D9000 \| DA000
				2535	1 0 1 1 1 \| D9800 \| DA000
				2536	\| \|
				2537	1 1 0 0 0 \| DC000 \| DE000
				2538	1 1 0 0 1 \| DC800 \| DE000
				2539	1 1 0 1 0 \| DD000 \| DE000
				2540	1 1 0 1 1 \| DD800 \| DE000
				2541	\| \|
				2542	1 1 1 0 0 \| E0000 \| E2000
				2543	1 1 1 0 1 \| E0800 \| E2000
				2544	1 1 1 1 0 \| E1000 \| E2000
				2545	1 1 1 1 1 \| E1800 \| E2000
				2546
				2547	*) To enable the 8K Boot PROM install the jumper ROM.
				2548	The default is jumper ROM not installed.
				2549
				2550
				2551	Setting Interrupt Request Lines (IRQ)
				2552	-------------------------------------
				2553
				2554	To select a hardware interrupt level set one (only one!) of the jumpers
				2555	IRQ2, IRQ3, IRQ4, IRQ5 or IRQ7. The manufacturer's default is IRQ2.
				2556
				2557
				2558	Setting the Timeouts
				2559	--------------------
				2560
				2561	The two jumpers labeled ET1 and ET2 are used to determine the timeout
				2562	parameters (response and reconfiguration time). Every node in a network
				2563	must be set to the same timeout values.
				2564
				2565	ET1 ET2 \| Response Time (us) \| Reconfiguration Time (ms)
				2566	--------\|--------------------\|--------------------------
				2567	Off Off \| 78 \| 840 (Default)
				2568	Off On \| 285 \| 1680
				2569	On Off \| 563 \| 1680
				2570	On On \| 1130 \| 1680
				2571
				2572	On means jumper installed, Off means jumper not installed
				2573
				2574
				2575	NONAME 16-BIT ARCNET
				2576	====================
				2577
				2578	The manual of my 8-Bit NONAME ARCnet Card contains another description
				2579	of a 16-Bit Coax / Twisted Pair Card. This description is incomplete,
				2580	because there are missing two pages in the manual booklet. (The table
				2581	of contents reports pages ... 2-9, 2-11, 2-12, 3-1, ... but inside
				2582	the booklet there is a different way of counting ... 2-9, 2-10, A-1,
				2583	(empty page), 3-1, ..., 3-18, A-1 (again), A-2)
				2584	Also the picture of the board layout is not as good as the picture of
				2585	8-Bit card, because there isn't any letter like "SW1" written to the
				2586	picture.
				2587	Should somebody have such a board, please feel free to complete this
				2588	description or to send a mail to me!
				2589
				2590	This description has been written by Juergen Seifert <seifert@htwm.de>
				2591	using information from the Original
				2592	"ARCnet Installation Manual"
				2593
				2594
				2595	___________________________________________________________________
				2596	< _________________ _________________ \|
				2597	> \| SW? \|\| SW? \| \|
				2598	< \|_________________\|\|_________________\| \|
				2599	> ____________________ \|
				2600	< \| \| \|
				2601	> \| \| \|
				2602	< \| \| \|
				2603	> \| \| \|
				2604	< \| \| \|
				2605	> \| \| \|
				2606	< \| \| \|
				2607	> \|____________________\| \|
				2608	< ____\|
				2609	> ____________________ \| \|
				2610	< \| \| \| J1 \|
				2611	> \| < \| \|
				2612	< \|____________________\| ? ? ? ? ? ? \|____\|
				2613	> \|o\|o\|o\|o\|o\|o\| \|
				2614	< \|o\|o\|o\|o\|o\|o\| \|
				2615	> \|
				2616	< __ ___________\|
				2617	> \| \| \|
				2618	<____________\| \|_______________________________________\|
				2619
				2620
				2621	Setting one of the switches to Off means "1", On means "0".
				2622
				2623
				2624	Setting the Node ID
				2625	-------------------
				2626
				2627	The eight switches in group SW2 are used to set the node ID.
				2628	Each node attached to the network must have an unique node ID which
				2629	must be different from 0.
				2630	Switch 8 serves as the least significant bit (LSB).
				2631
				2632	The node ID is the sum of the values of all switches set to "1"
				2633	These values are:
				2634
				2635	Switch \| Value
				2636	-------\|-------
				2637	8 \| 1
				2638	7 \| 2
				2639	6 \| 4
				2640	5 \| 8
				2641	4 \| 16
				2642	3 \| 32
				2643	2 \| 64
				2644	1 \| 128
				2645
				2646	Some Examples:
				2647
				2648	Switch \| Hex \| Decimal
				2649	1 2 3 4 5 6 7 8 \| Node ID \| Node ID
				2650	----------------\|---------\|---------
				2651	0 0 0 0 0 0 0 0 \| not allowed
				2652	0 0 0 0 0 0 0 1 \| 1 \| 1
				2653	0 0 0 0 0 0 1 0 \| 2 \| 2
				2654	0 0 0 0 0 0 1 1 \| 3 \| 3
				2655	. . . \| \|
				2656	0 1 0 1 0 1 0 1 \| 55 \| 85
				2657	. . . \| \|
				2658	1 0 1 0 1 0 1 0 \| AA \| 170
				2659	. . . \| \|
				2660	1 1 1 1 1 1 0 1 \| FD \| 253
				2661	1 1 1 1 1 1 1 0 \| FE \| 254
				2662	1 1 1 1 1 1 1 1 \| FF \| 255
				2663
				2664
				2665	Setting the I/O Base Address
				2666	----------------------------
				2667
				2668	The first three switches in switch group SW1 are used to select one
				2669	of eight possible I/O Base addresses using the following table
				2670
				2671	Switch \| Hex I/O
				2672	3 2 1 \| Address
				2673	------------\|--------
				2674	ON ON ON \| 260
				2675	ON ON OFF \| 290
				2676	ON OFF ON \| 2E0 (Manufacturer's default)
				2677	ON OFF OFF \| 2F0
				2678	OFF ON ON \| 300
				2679	OFF ON OFF \| 350
				2680	OFF OFF ON \| 380
				2681	OFF OFF OFF \| 3E0
				2682
				2683
				2684	Setting the Base Memory (RAM) buffer Address
				2685	--------------------------------------------
				2686
				2687	The memory buffer requires 2K of a 16K block of RAM. The base of this
				2688	16K block can be located in any of eight positions.
				2689	Switches 6-8 of switch group SW1 select the Base of the 16K block.
				2690	Within that 16K address space, the buffer may be assigned any one of four
				2691	positions, determined by the offset, switches 4 and 5 of group SW1.
				2692
				2693	Switch \| Hex RAM \| Hex ROM
				2694	8 7 6 5 4 \| Address \| Address
				2695	-----------\|---------\|-----------
				2696	0 0 0 0 0 \| C0000 \| C2000
				2697	0 0 0 0 1 \| C0800 \| C2000
				2698	0 0 0 1 0 \| C1000 \| C2000
				2699	0 0 0 1 1 \| C1800 \| C2000
				2700	\| \|
				2701	0 0 1 0 0 \| C4000 \| C6000
				2702	0 0 1 0 1 \| C4800 \| C6000
				2703	0 0 1 1 0 \| C5000 \| C6000
				2704	0 0 1 1 1 \| C5800 \| C6000
				2705	\| \|
				2706	0 1 0 0 0 \| CC000 \| CE000
				2707	0 1 0 0 1 \| CC800 \| CE000
				2708	0 1 0 1 0 \| CD000 \| CE000
				2709	0 1 0 1 1 \| CD800 \| CE000
				2710	\| \|
				2711	0 1 1 0 0 \| D0000 \| D2000 (Manufacturer's default)
				2712	0 1 1 0 1 \| D0800 \| D2000
				2713	0 1 1 1 0 \| D1000 \| D2000
				2714	0 1 1 1 1 \| D1800 \| D2000
				2715	\| \|
				2716	1 0 0 0 0 \| D4000 \| D6000
				2717	1 0 0 0 1 \| D4800 \| D6000
				2718	1 0 0 1 0 \| D5000 \| D6000
				2719	1 0 0 1 1 \| D5800 \| D6000
				2720	\| \|
				2721	1 0 1 0 0 \| D8000 \| DA000
				2722	1 0 1 0 1 \| D8800 \| DA000
				2723	1 0 1 1 0 \| D9000 \| DA000
				2724	1 0 1 1 1 \| D9800 \| DA000
				2725	\| \|
				2726	1 1 0 0 0 \| DC000 \| DE000
				2727	1 1 0 0 1 \| DC800 \| DE000
				2728	1 1 0 1 0 \| DD000 \| DE000
				2729	1 1 0 1 1 \| DD800 \| DE000
				2730	\| \|
				2731	1 1 1 0 0 \| E0000 \| E2000
				2732	1 1 1 0 1 \| E0800 \| E2000
				2733	1 1 1 1 0 \| E1000 \| E2000
				2734	1 1 1 1 1 \| E1800 \| E2000
				2735
				2736
				2737	Setting Interrupt Request Lines (IRQ)
				2738	-------------------------------------
				2739
				2740	??????????????????????????????????????
				2741
				2742
				2743	Setting the Timeouts
				2744	--------------------
				2745
				2746	??????????????????????????????????????
				2747
				2748
				2749	*****************************************************************************
				2750
				2751	No Name
				2752	8-bit cards ("Made in Taiwan R.O.C.")
				2753	-----------
				2754	- from Vojtech Pavlik <vojtech@suse.cz>
				2755
				2756	I have named this ARCnet card "NONAME", since I got only the card with
				2757	no manual at all and the only text identifying the manufacturer is
				2758	"MADE IN TAIWAN R.O.C" printed on the card.
				2759
				2760	____________________________________________________________
				2761	\| 1 2 3 4 5 6 7 8 \|
				2762	\| \|o\|o\| JP1 o\|o\|o\|o\|o\|o\|o\|o\| ON \|
				2763	\| + o\|o\|o\|o\|o\|o\|o\|o\| ___\|
				2764	\| _____________ o\|o\|o\|o\|o\|o\|o\|o\| OFF _____ \| \| ID7
				2765	\| \| \| SW1 \| \| \| \| ID6
				2766	\| > RAM (2k) \| ____________________ \| H \| \| S \| ID5
				2767	\| \|_____________\| \| \|\| y \| \| W \| ID4
				2768	\| \| \|\| b \| \| 2 \| ID3
				2769	\| \| \|\| r \| \| \| ID2
				2770	\| \| \|\| i \| \| \| ID1
				2771	\| \| 90C65 \|\| d \| \|___\| ID0
				2772	\| SW3 \| \|\| \| \|
				2773	\| \|o\|o\|o\|o\|o\|o\|o\|o\| ON \| \|\| I \| \|
				2774	\| \|o\|o\|o\|o\|o\|o\|o\|o\| \| \|\| C \| \|
				2775	\| \|o\|o\|o\|o\|o\|o\|o\|o\| OFF \|____________________\|\| \| _____\|
				2776	\| 1 2 3 4 5 6 7 8 \| \| \| \|___
				2777	\| ______________ \| \| \| BNC \|___\|
				2778	\| \| \| \|_____\| \|_____\|
				2779	\| > EPROM SOCKET \| \|
				2780	\| \|______________\| \|
				2781	\| ______________\|
				2782	\| \|
				2783	\|_____________________________________________\|
				2784
				2785	Legend:
				2786
				2787	90C65 ARCNET Chip
				2788	SW1 1-5: Base Memory Address Select
				2789	6-8: Base I/O Address Select
				2790	SW2 1-8: Node ID Select (ID0-ID7)
				2791	SW3 1-5: IRQ Select
				2792	6-7: Extra Timeout
				2793	8 : ROM Enable
				2794	JP1 Led connector
				2795	BNC Coax connector
				2796
				2797	Although the jumpers SW1 and SW3 are marked SW, not JP, they are jumpers, not
				2798	switches.
				2799
				2800	Setting the jumpers to ON means connecting the upper two pins, off the bottom
				2801	two - or - in case of IRQ setting, connecting none of them at all.
				2802
				2803	Setting the Node ID
				2804	-------------------
				2805
				2806	The eight switches in SW2 are used to set the node ID. Each node attached
				2807	to the network must have an unique node ID which must not be 0.
				2808	Switch 1 (ID0) serves as the least significant bit (LSB).
				2809
				2810	Setting one of the switches to Off means "1", On means "0".
				2811
				2812	The node ID is the sum of the values of all switches set to "1"
				2813	These values are:
				2814
				2815	Switch \| Label \| Value
				2816	-------\|-------\|-------
				2817	1 \| ID0 \| 1
				2818	2 \| ID1 \| 2
				2819	3 \| ID2 \| 4
				2820	4 \| ID3 \| 8
				2821	5 \| ID4 \| 16
				2822	6 \| ID5 \| 32
				2823	7 \| ID6 \| 64
				2824	8 \| ID7 \| 128
				2825
				2826	Some Examples:
				2827
				2828	Switch \| Hex \| Decimal
				2829	8 7 6 5 4 3 2 1 \| Node ID \| Node ID
				2830	----------------\|---------\|---------
				2831	0 0 0 0 0 0 0 0 \| not allowed
				2832	0 0 0 0 0 0 0 1 \| 1 \| 1
				2833	0 0 0 0 0 0 1 0 \| 2 \| 2
				2834	0 0 0 0 0 0 1 1 \| 3 \| 3
				2835	. . . \| \|
				2836	0 1 0 1 0 1 0 1 \| 55 \| 85
				2837	. . . \| \|
				2838	1 0 1 0 1 0 1 0 \| AA \| 170
				2839	. . . \| \|
				2840	1 1 1 1 1 1 0 1 \| FD \| 253
				2841	1 1 1 1 1 1 1 0 \| FE \| 254
				2842	1 1 1 1 1 1 1 1 \| FF \| 255
				2843
				2844
				2845	Setting the I/O Base Address
				2846	----------------------------
				2847
				2848	The last three switches in switch block SW1 are used to select one
				2849	of eight possible I/O Base addresses using the following table
				2850
				2851
				2852	Switch \| Hex I/O
				2853	6 7 8 \| Address
				2854	------------\|--------
				2855	ON ON ON \| 260
				2856	OFF ON ON \| 290
				2857	ON OFF ON \| 2E0 (Manufacturer's default)
				2858	OFF OFF ON \| 2F0
				2859	ON ON OFF \| 300
				2860	OFF ON OFF \| 350
				2861	ON OFF OFF \| 380
				2862	OFF OFF OFF \| 3E0
				2863
				2864
				2865	Setting the Base Memory (RAM) buffer Address
				2866	--------------------------------------------
				2867
				2868	The memory buffer (RAM) requires 2K. The base of this buffer can be
				2869	located in any of eight positions. The address of the Boot Prom is
				2870	memory base + 0x2000.
				2871	Jumpers 3-5 of jumper block SW1 select the Memory Base address.
				2872
				2873	Switch \| Hex RAM \| Hex ROM
				2874	1 2 3 4 5 \| Address \| Address *)
				2875	--------------------\|---------\|-----------
				2876	ON ON ON ON ON \| C0000 \| C2000
				2877	ON ON OFF ON ON \| C4000 \| C6000
				2878	ON ON ON OFF ON \| CC000 \| CE000
				2879	ON ON OFF OFF ON \| D0000 \| D2000 (Manufacturer's default)
				2880	ON ON ON ON OFF \| D4000 \| D6000
				2881	ON ON OFF ON OFF \| D8000 \| DA000
				2882	ON ON ON OFF OFF \| DC000 \| DE000
				2883	ON ON OFF OFF OFF \| E0000 \| E2000
				2884
				2885	*) To enable the Boot ROM set the jumper 8 of jumper block SW3 to position ON.
				2886
				2887	The jumpers 1 and 2 probably add 0x0800, 0x1000 and 0x1800 to RAM adders.
				2888
				2889	Setting the Interrupt Line
				2890	--------------------------
				2891
				2892	Jumpers 1-5 of the jumper block SW3 control the IRQ level.
				2893
				2894	Jumper \| IRQ
				2895	1 2 3 4 5 \|
				2896	----------------------------
				2897	ON OFF OFF OFF OFF \| 2
				2898	OFF ON OFF OFF OFF \| 3
				2899	OFF OFF ON OFF OFF \| 4
				2900	OFF OFF OFF ON OFF \| 5
				2901	OFF OFF OFF OFF ON \| 7
				2902
				2903
				2904	Setting the Timeout Parameters
				2905	------------------------------
				2906
				2907	The jumpers 6-7 of the jumper block SW3 are used to determine the timeout
				2908	parameters. These two jumpers are normally left in the OFF position.
				2909
				2910
				2911	*****************************************************************************
				2912
				2913	No Name
				2914	(Generic Model 9058)
				2915	--------------------
				2916	- from Andrew J. Kroll <ag784@freenet.buffalo.edu>
				2917	- Sorry this sat in my to-do box for so long, Andrew! (yikes - over a
				2918	year!)
				2919	_____
				2920	\| <
				2921	\| .---'
				2922	________________________________________________________________ \| \|
				2923	\| \| SW2 \| \| \|
				2924	\| ___________ \|_____________\| \| \|
				2925	\| \| \| 1 2 3 4 5 6 ___\| \|
				2926	\| > 6116 RAM \| _________ 8 \| \| \|
				2927	\| \|___________\| \|20MHzXtal\| 7 \| \| \|
				2928	\| \|_________\| __________ 6 \| S \| \|
				2929	\| 74LS373 \| \|- 5 \| W \| \|
				2930	\| _________ \| E \|- 4 \| \| \|
				2931	\| >_______\| ______________\|..... P \|- 3 \| 3 \| \|
				2932	\| \| \| : O \|- 2 \| \| \|
				2933	\| \| \| : X \|- 1 \|___\| \|
				2934	\| ________________ \| \| : Y \|- \| \|
				2935	\| \| SW1 \| \| SL90C65 \| : \|- \| \|
				2936	\| \|________________\| \| \| : B \|- \| \|
				2937	\| 1 2 3 4 5 6 7 8 \| \| : O \|- \| \|
				2938	\| \|_________o____\|..../ A \|- _______\| \|
				2939	\| ____________________ \| R \|- \| \|------,
				2940	\| \| \| \| D \|- \| BNC \| # \|
				2941	\| > 2764 PROM SOCKET \| \|__________\|- \|_______\|------'
				2942	\| \|____________________\| _________ \| \|
				2943	\| >________\| <- 74LS245 \| \|
				2944	\| \| \|
				2945	\|___ ______________\| \|
				2946	\|H H H H H H H H H H H H H H H H H H H H H H H\| \| \|
				2947	\|U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U\| \| \|
				2948	\\|
				2949	Legend:
				2950
				2951	SL90C65 ARCNET Controller / Transceiver /Logic
				2952	SW1 1-5: IRQ Select
				2953	6: ET1
				2954	7: ET2
				2955	8: ROM ENABLE
				2956	SW2 1-3: Memory Buffer/PROM Address
				2957	3-6: I/O Address Map
				2958	SW3 1-8: Node ID Select
				2959	BNC BNC RG62/U Connection
				2960	I have had success using RG59B/U with NO terminators!
				2961	What gives?!
				2962
				2963	SW1: Timeouts, Interrupt and ROM
				2964	---------------------------------
				2965
				2966	To select a hardware interrupt level set one (only one!) of the dip switches
				2967	up (on) SW1...(switches 1-5)
				2968	IRQ3, IRQ4, IRQ5, IRQ7, IRQ2. The Manufacturer's default is IRQ2.
				2969
				2970	The switches on SW1 labeled EXT1 (switch 6) and EXT2 (switch 7)
				2971	are used to determine the timeout parameters. These two dip switches
				2972	are normally left off (down).
				2973
				2974	To enable the 8K Boot PROM position SW1 switch 8 on (UP) labeled ROM.
				2975	The default is jumper ROM not installed.
				2976
				2977
				2978	Setting the I/O Base Address
				2979	----------------------------
				2980
				2981	The last three switches in switch group SW2 are used to select one
				2982	of eight possible I/O Base addresses using the following table
				2983
				2984
				2985	Switch \| Hex I/O
				2986	4 5 6 \| Address
				2987	-------\|--------
				2988	0 0 0 \| 260
				2989	0 0 1 \| 290
				2990	0 1 0 \| 2E0 (Manufacturer's default)
				2991	0 1 1 \| 2F0
				2992	1 0 0 \| 300
				2993	1 0 1 \| 350
				2994	1 1 0 \| 380
				2995	1 1 1 \| 3E0
				2996
				2997
				2998	Setting the Base Memory Address (RAM & ROM)
				2999	-------------------------------------------
				3000
				3001	The memory buffer requires 2K of a 16K block of RAM. The base of this
				3002	16K block can be located in any of eight positions.
				3003	Switches 1-3 of switch group SW2 select the Base of the 16K block.
				3004	(0 = DOWN, 1 = UP)
				3005	I could, however, only verify two settings...
				3006
				3007	Switch\| Hex RAM \| Hex ROM
				3008	1 2 3 \| Address \| Address
				3009	------\|---------\|-----------
				3010	0 0 0 \| E0000 \| E2000
				3011	0 0 1 \| D0000 \| D2000 (Manufacturer's default)
				3012	0 1 0 \| ????? \| ?????
				3013	0 1 1 \| ????? \| ?????
				3014	1 0 0 \| ????? \| ?????
				3015	1 0 1 \| ????? \| ?????
				3016	1 1 0 \| ????? \| ?????
				3017	1 1 1 \| ????? \| ?????
				3018
				3019
				3020	Setting the Node ID
				3021	-------------------
				3022
				3023	The eight switches in group SW3 are used to set the node ID.
				3024	Each node attached to the network must have an unique node ID which
				3025	must be different from 0.
				3026	Switch 1 serves as the least significant bit (LSB).
				3027	switches in the DOWN position are OFF (0) and in the UP position are ON (1)
				3028
				3029	The node ID is the sum of the values of all switches set to "1"
				3030	These values are:
				3031	Switch \| Value
				3032	-------\|-------
				3033	1 \| 1
				3034	2 \| 2
				3035	3 \| 4
				3036	4 \| 8
				3037	5 \| 16
				3038	6 \| 32
				3039	7 \| 64
				3040	8 \| 128
				3041
				3042	Some Examples:
				3043
				3044	Switch# \| Hex \| Decimal
				3045	8 7 6 5 4 3 2 1 \| Node ID \| Node ID
				3046	----------------\|---------\|---------
				3047	0 0 0 0 0 0 0 0 \| not allowed <-.
				3048	0 0 0 0 0 0 0 1 \| 1 \| 1 \|
				3049	0 0 0 0 0 0 1 0 \| 2 \| 2 \|
				3050	0 0 0 0 0 0 1 1 \| 3 \| 3 \|
				3051	. . . \| \| \|
				3052	0 1 0 1 0 1 0 1 \| 55 \| 85 \|
				3053	. . . \| \| + Don't use 0 or 255!
				3054	1 0 1 0 1 0 1 0 \| AA \| 170 \|
				3055	. . . \| \| \|
				3056	1 1 1 1 1 1 0 1 \| FD \| 253 \|
				3057	1 1 1 1 1 1 1 0 \| FE \| 254 \|
				3058	1 1 1 1 1 1 1 1 \| FF \| 255 <-'
				3059
				3060
				3061	*****************************************************************************
				3062
				3063	Tiara
				3064	(model unknown)
				3065	-------------------------
				3066	- from Christoph Lameter <christoph@lameter.com>
				3067
				3068
				3069	Here is information about my card as far as I could figure it out:
				3070	----------------------------------------------- tiara
				3071	Tiara LanCard of Tiara Computer Systems.
				3072
				3073	+----------------------------------------------+
				3074	! ! Transmitter Unit ! !
				3075	! +------------------+ -------
				3076	! MEM Coax Connector
				3077	! ROM 7654321 <- I/O -------
				3078	! : : +--------+ !
				3079	! : : ! 90C66LJ! +++
				3080	! : : ! ! !D Switch to set
				3081	! : : ! ! !I the Nodenumber
				3082	! : : +--------+ !P
				3083	! !++
				3084	! 234567 <- IRQ !
				3085	+------------!!!!!!!!!!!!!!!!!!!!!!!!--------+
				3086	!!!!!!!!!!!!!!!!!!!!!!!!
				3087
				3088	0 = Jumper Installed
				3089	1 = Open
				3090
				3091	Top Jumper line Bit 7 = ROM Enable 654=Memory location 321=I/O
				3092
				3093	Settings for Memory Location (Top Jumper Line)
				3094	456 Address selected
				3095	000 C0000
				3096	001 C4000
				3097	010 CC000
				3098	011 D0000
				3099	100 D4000
				3100	101 D8000
				3101	110 DC000
				3102	111 E0000
				3103
				3104	Settings for I/O Address (Top Jumper Line)
				3105	123 Port
				3106	000 260
				3107	001 290
				3108	010 2E0
				3109	011 2F0
				3110	100 300
				3111	101 350
				3112	110 380
				3113	111 3E0
				3114
				3115	Settings for IRQ Selection (Lower Jumper Line)
				3116	234567
				3117	011111 IRQ 2
				3118	101111 IRQ 3
				3119	110111 IRQ 4
				3120	111011 IRQ 5
				3121	111110 IRQ 7
				3122
				3123	*****************************************************************************
				3124
				3125
				3126	Other Cards
				3127	-----------
				3128
				3129	I have no information on other models of ARCnet cards at the moment. Please
				3130	send any and all info to:
				3131	apenwarr@worldvisions.ca
				3132
				3133	Thanks.