~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/Documentation/networking/arcnet-hardware.rst

Version: ~ [ linux-6.11.5 ] ~ [ linux-6.10.14 ] ~ [ linux-6.9.12 ] ~ [ linux-6.8.12 ] ~ [ linux-6.7.12 ] ~ [ linux-6.6.58 ] ~ [ linux-6.5.13 ] ~ [ linux-6.4.16 ] ~ [ linux-6.3.13 ] ~ [ linux-6.2.16 ] ~ [ linux-6.1.114 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.169 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.228 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.284 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.322 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.336 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.4.302 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.9 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 .. SPDX-License-Identifier: GPL-2.0
  2 
  3 ===============
  4 ARCnet Hardware
  5 ===============
  6 
  7 .. note::
  8 
  9    1) This file is a supplement to arcnet.txt.  Please read that for general
 10       driver configuration help.
 11    2) This file is no longer Linux-specific.  It should probably be moved out
 12       of the kernel sources.  Ideas?
 13 
 14 Because so many people (myself included) seem to have obtained ARCnet cards
 15 without manuals, this file contains a quick introduction to ARCnet hardware,
 16 some cabling tips, and a listing of all jumper settings I can find. Please
 17 e-mail apenwarr@worldvisions.ca with any settings for your particular card,
 18 or any other information you have!
 19 
 20 
 21 Introduction to ARCnet
 22 ======================
 23 
 24 ARCnet is a network type which works in a way similar to popular Ethernet
 25 networks but which is also different in some very important ways.
 26 
 27 First of all, you can get ARCnet cards in at least two speeds: 2.5 Mbps
 28 (slower than Ethernet) and 100 Mbps (faster than normal Ethernet).  In fact,
 29 there are others as well, but these are less common.  The different hardware
 30 types, as far as I'm aware, are not compatible and so you cannot wire a
 31 100 Mbps card to a 2.5 Mbps card, and so on.  From what I hear, my driver does
 32 work with 100 Mbps cards, but I haven't been able to verify this myself,
 33 since I only have the 2.5 Mbps variety.  It is probably not going to saturate
 34 your 100 Mbps card.  Stop complaining. :)
 35 
 36 You also cannot connect an ARCnet card to any kind of Ethernet card and
 37 expect it to work.
 38 
 39 There are two "types" of ARCnet - STAR topology and BUS topology.  This
 40 refers to how the cards are meant to be wired together.  According to most
 41 available documentation, you can only connect STAR cards to STAR cards and
 42 BUS cards to BUS cards.  That makes sense, right?  Well, it's not quite
 43 true; see below under "Cabling."
 44 
 45 Once you get past these little stumbling blocks, ARCnet is actually quite a
 46 well-designed standard.  It uses something called "modified token passing"
 47 which makes it completely incompatible with so-called "Token Ring" cards,
 48 but which makes transfers much more reliable than Ethernet does.  In fact,
 49 ARCnet will guarantee that a packet arrives safely at the destination, and
 50 even if it can't possibly be delivered properly (ie. because of a cable
 51 break, or because the destination computer does not exist) it will at least
 52 tell the sender about it.
 53 
 54 Because of the carefully defined action of the "token", it will always make
 55 a pass around the "ring" within a maximum length of time.  This makes it
 56 useful for realtime networks.
 57 
 58 In addition, all known ARCnet cards have an (almost) identical programming
 59 interface.  This means that with one ARCnet driver you can support any
 60 card, whereas with Ethernet each manufacturer uses what is sometimes a
 61 completely different programming interface, leading to a lot of different,
 62 sometimes very similar, Ethernet drivers.  Of course, always using the same
 63 programming interface also means that when high-performance hardware
 64 facilities like PCI bus mastering DMA appear, it's hard to take advantage of
 65 them.  Let's not go into that.
 66 
 67 One thing that makes ARCnet cards difficult to program for, however, is the
 68 limit on their packet sizes; standard ARCnet can only send packets that are
 69 up to 508 bytes in length.  This is smaller than the Internet "bare minimum"
 70 of 576 bytes, let alone the Ethernet MTU of 1500.  To compensate, an extra
 71 level of encapsulation is defined by RFC1201, which I call "packet
 72 splitting," that allows "virtual packets" to grow as large as 64K each,
 73 although they are generally kept down to the Ethernet-style 1500 bytes.
 74 
 75 For more information on the advantages and disadvantages (mostly the
 76 advantages) of ARCnet networks, you might try the "ARCnet Trade Association"
 77 WWW page:
 78 
 79         http://www.arcnet.com
 80 
 81 
 82 Cabling ARCnet Networks
 83 =======================
 84 
 85 This section was rewritten by
 86 
 87         Vojtech Pavlik     <vojtech@suse.cz>
 88 
 89 using information from several people, including:
 90 
 91         - Avery Pennraun     <apenwarr@worldvisions.ca>
 92         - Stephen A. Wood    <saw@hallc1.cebaf.gov>
 93         - John Paul Morrison <jmorriso@bogomips.ee.ubc.ca>
 94         - Joachim Koenig     <jojo@repas.de>
 95 
 96 and Avery touched it up a bit, at Vojtech's request.
 97 
 98 ARCnet (the classic 2.5 Mbps version) can be connected by two different
 99 types of cabling: coax and twisted pair.  The other ARCnet-type networks
100 (100 Mbps TCNS and 320 kbps - 32 Mbps ARCnet Plus) use different types of
101 cabling (Type1, Fiber, C1, C4, C5).
102 
103 For a coax network, you "should" use 93 Ohm RG-62 cable.  But other cables
104 also work fine, because ARCnet is a very stable network. I personally use 75
105 Ohm TV antenna cable.
106 
107 Cards for coax cabling are shipped in two different variants: for BUS and
108 STAR network topologies.  They are mostly the same.  The only difference
109 lies in the hybrid chip installed.  BUS cards use high impedance output,
110 while STAR use low impedance.  Low impedance card (STAR) is electrically
111 equal to a high impedance one with a terminator installed.
112 
113 Usually, the ARCnet networks are built up from STAR cards and hubs.  There
114 are two types of hubs - active and passive.  Passive hubs are small boxes
115 with four BNC connectors containing four 47 Ohm resistors::
116 
117            |         | wires
118            R         + junction
119         -R-+-R-      R 47 Ohm resistors
120            R
121            |
122 
123 The shielding is connected together.  Active hubs are much more complicated;
124 they are powered and contain electronics to amplify the signal and send it
125 to other segments of the net.  They usually have eight connectors.  Active
126 hubs come in two variants - dumb and smart.  The dumb variant just
127 amplifies, but the smart one decodes to digital and encodes back all packets
128 coming through.  This is much better if you have several hubs in the net,
129 since many dumb active hubs may worsen the signal quality.
130 
131 And now to the cabling.  What you can connect together:
132 
133 1. A card to a card.  This is the simplest way of creating a 2-computer
134    network.
135 
136 2. A card to a passive hub.  Remember that all unused connectors on the hub
137    must be properly terminated with 93 Ohm (or something else if you don't
138    have the right ones) terminators.
139 
140         (Avery's note: oops, I didn't know that.  Mine (TV cable) works
141         anyway, though.)
142 
143 3. A card to an active hub.  Here is no need to terminate the unused
144    connectors except some kind of aesthetic feeling.  But, there may not be
145    more than eleven active hubs between any two computers.  That of course
146    doesn't limit the number of active hubs on the network.
147 
148 4. An active hub to another.
149 
150 5. An active hub to passive hub.
151 
152 Remember that you cannot connect two passive hubs together.  The power loss
153 implied by such a connection is too high for the net to operate reliably.
154 
155 An example of a typical ARCnet network::
156 
157            R                     S - STAR type card
158     S------H--------A-------S    R - Terminator
159            |        |            H - Hub
160            |        |            A - Active hub
161            |   S----H----S
162            S        |
163                     |
164                     S
165 
166 The BUS topology is very similar to the one used by Ethernet.  The only
167 difference is in cable and terminators: they should be 93 Ohm.  Ethernet
168 uses 50 Ohm impedance. You use T connectors to put the computers on a single
169 line of cable, the bus. You have to put terminators at both ends of the
170 cable. A typical BUS ARCnet network looks like::
171 
172     RT----T------T------T------T------TR
173      B    B      B      B      B      B
174 
175   B - BUS type card
176   R - Terminator
177   T - T connector
178 
179 But that is not all! The two types can be connected together.  According to
180 the official documentation the only way of connecting them is using an active
181 hub::
182 
183          A------T------T------TR
184          |      B      B      B
185      S---H---S
186          |
187          S
188 
189 The official docs also state that you can use STAR cards at the ends of
190 BUS network in place of a BUS card and a terminator::
191 
192      S------T------T------S
193             B      B
194 
195 But, according to my own experiments, you can simply hang a BUS type card
196 anywhere in middle of a cable in a STAR topology network.  And more - you
197 can use the bus card in place of any star card if you use a terminator. Then
198 you can build very complicated networks fulfilling all your needs!  An
199 example::
200 
201                                   S
202                                   |
203            RT------T-------T------H------S
204             B      B       B      |
205                                   |       R
206     S------A------T-------T-------A-------H------TR
207            |      B       B       |       |      B
208            |   S                 BT       |
209            |   |                  |  S----A-----S
210     S------H---A----S             |       |
211            |   |      S------T----H---S   |
212            S   S             B    R       S
213 
214 A basically different cabling scheme is used with Twisted Pair cabling. Each
215 of the TP cards has two RJ (phone-cord style) connectors.  The cards are
216 then daisy-chained together using a cable connecting every two neighboring
217 cards.  The ends are terminated with RJ 93 Ohm terminators which plug into
218 the empty connectors of cards on the ends of the chain.  An example::
219 
220           ___________   ___________
221       _R_|_         _|_|_         _|_R_
222      |     |       |     |       |     |
223      |Card |       |Card |       |Card |
224      |_____|       |_____|       |_____|
225 
226 
227 There are also hubs for the TP topology.  There is nothing difficult
228 involved in using them; you just connect a TP chain to a hub on any end or
229 even at both.  This way you can create almost any network configuration.
230 The maximum of 11 hubs between any two computers on the net applies here as
231 well.  An example::
232 
233     RP-------P--------P--------H-----P------P-----PR
234                                |
235       RP-----H--------P--------H-----P------PR
236              |                 |
237              PR                PR
238 
239     R - RJ Terminator
240     P - TP Card
241     H - TP Hub
242 
243 Like any network, ARCnet has a limited cable length.  These are the maximum
244 cable lengths between two active ends (an active end being an active hub or
245 a STAR card).
246 
247                 ========== ======= ===========
248                 RG-62       93 Ohm up to 650 m
249                 RG-59/U     75 Ohm up to 457 m
250                 RG-11/U     75 Ohm up to 533 m
251                 IBM Type 1 150 Ohm up to 200 m
252                 IBM Type 3 100 Ohm up to 100 m
253                 ========== ======= ===========
254 
255 The maximum length of all cables connected to a passive hub is limited to 65
256 meters for RG-62 cabling; less for others.  You can see that using passive
257 hubs in a large network is a bad idea. The maximum length of a single "BUS
258 Trunk" is about 300 meters for RG-62. The maximum distance between the two
259 most distant points of the net is limited to 3000 meters. The maximum length
260 of a TP cable between two cards/hubs is 650 meters.
261 
262 
263 Setting the Jumpers
264 ===================
265 
266 All ARCnet cards should have a total of four or five different settings:
267 
268   - the I/O address:  this is the "port" your ARCnet card is on.  Probed
269     values in the Linux ARCnet driver are only from 0x200 through 0x3F0. (If
270     your card has additional ones, which is possible, please tell me.) This
271     should not be the same as any other device on your system.  According to
272     a doc I got from Novell, MS Windows prefers values of 0x300 or more,
273     eating net connections on my system (at least) otherwise.  My guess is
274     this may be because, if your card is at 0x2E0, probing for a serial port
275     at 0x2E8 will reset the card and probably mess things up royally.
276 
277         - Avery's favourite: 0x300.
278 
279   - the IRQ: on  8-bit cards, it might be 2 (9), 3, 4, 5, or 7.
280              on 16-bit cards, it might be 2 (9), 3, 4, 5, 7, or 10-15.
281 
282     Make sure this is different from any other card on your system.  Note
283     that IRQ2 is the same as IRQ9, as far as Linux is concerned.  You can
284     "cat /proc/interrupts" for a somewhat complete list of which ones are in
285     use at any given time.  Here is a list of common usages from Vojtech
286     Pavlik <vojtech@suse.cz>:
287 
288         ("Not on bus" means there is no way for a card to generate this
289         interrupt)
290 
291         ======   =========================================================
292         IRQ  0   Timer 0 (Not on bus)
293         IRQ  1   Keyboard (Not on bus)
294         IRQ  2   IRQ Controller 2 (Not on bus, nor does interrupt the CPU)
295         IRQ  3   COM2
296         IRQ  4   COM1
297         IRQ  5   FREE (LPT2 if you have it; sometimes COM3; maybe PLIP)
298         IRQ  6   Floppy disk controller
299         IRQ  7   FREE (LPT1 if you don't use the polling driver; PLIP)
300         IRQ  8   Realtime Clock Interrupt (Not on bus)
301         IRQ  9   FREE (VGA vertical sync interrupt if enabled)
302         IRQ 10   FREE
303         IRQ 11   FREE
304         IRQ 12   FREE
305         IRQ 13   Numeric Coprocessor (Not on bus)
306         IRQ 14   Fixed Disk Controller
307         IRQ 15   FREE (Fixed Disk Controller 2 if you have it)
308         ======   =========================================================
309 
310 
311         .. note::
312 
313            IRQ 9 is used on some video cards for the "vertical retrace"
314            interrupt.  This interrupt would have been handy for things like
315            video games, as it occurs exactly once per screen refresh, but
316            unfortunately IBM cancelled this feature starting with the original
317            VGA and thus many VGA/SVGA cards do not support it.  For this
318            reason, no modern software uses this interrupt and it can almost
319            always be safely disabled, if your video card supports it at all.
320 
321         If your card for some reason CANNOT disable this IRQ (usually there
322         is a jumper), one solution would be to clip the printed circuit
323         contact on the board: it's the fourth contact from the left on the
324         back side.  I take no responsibility if you try this.
325 
326         - Avery's favourite: IRQ2 (actually IRQ9).  Watch that VGA, though.
327 
328   - the memory address:  Unlike most cards, ARCnets use "shared memory" for
329     copying buffers around.  Make SURE it doesn't conflict with any other
330     used memory in your system!
331 
332     ::
333 
334         A0000           - VGA graphics memory (ok if you don't have VGA)
335         B0000           - Monochrome text mode
336         C0000           \  One of these is your VGA BIOS - usually C0000.
337         E0000           /
338         F0000           - System BIOS
339 
340     Anything less than 0xA0000 is, well, a BAD idea since it isn't above
341     640k.
342 
343         - Avery's favourite: 0xD0000
344 
345   - the station address:  Every ARCnet card has its own "unique" network
346     address from 0 to 255.  Unlike Ethernet, you can set this address
347     yourself with a jumper or switch (or on some cards, with special
348     software).  Since it's only 8 bits, you can only have 254 ARCnet cards
349     on a network.  DON'T use 0 or 255, since these are reserved (although
350     neat stuff will probably happen if you DO use them).  By the way, if you
351     haven't already guessed, don't set this the same as any other ARCnet on
352     your network!
353 
354         - Avery's favourite:  3 and 4.  Not that it matters.
355 
356   - There may be ETS1 and ETS2 settings.  These may or may not make a
357     difference on your card (many manuals call them "reserved"), but are
358     used to change the delays used when powering up a computer on the
359     network.  This is only necessary when wiring VERY long range ARCnet
360     networks, on the order of 4km or so; in any case, the only real
361     requirement here is that all cards on the network with ETS1 and ETS2
362     jumpers have them in the same position.  Chris Hindy <chrish@io.org>
363     sent in a chart with actual values for this:
364 
365         ======= ======= =============== ====================
366         ET1     ET2     Response Time   Reconfiguration Time
367         ======= ======= =============== ====================
368         open    open    74.7us          840us
369         open    closed  283.4us         1680us
370         closed  open    561.8us         1680us
371         closed  closed  1118.6us        1680us
372         ======= ======= =============== ====================
373 
374     Make sure you set ETS1 and ETS2 to the SAME VALUE for all cards on your
375     network.
376 
377 Also, on many cards (not mine, though) there are red and green LED's.
378 Vojtech Pavlik <vojtech@suse.cz> tells me this is what they mean:
379 
380         =============== =============== =====================================
381         GREEN           RED             Status
382         =============== =============== =====================================
383         OFF             OFF             Power off
384         OFF             Short flashes   Cabling problems (broken cable or not
385                                         terminated)
386         OFF (short)     ON              Card init
387         ON              ON              Normal state - everything OK, nothing
388                                         happens
389         ON              Long flashes    Data transfer
390         ON              OFF             Never happens (maybe when wrong ID)
391         =============== =============== =====================================
392 
393 
394 The following is all the specific information people have sent me about
395 their own particular ARCnet cards.  It is officially a mess, and contains
396 huge amounts of duplicated information.  I have no time to fix it.  If you
397 want to, PLEASE DO!  Just send me a 'diff -u' of all your changes.
398 
399 The model # is listed right above specifics for that card, so you should be
400 able to use your text viewer's "search" function to find the entry you want.
401 If you don't KNOW what kind of card you have, try looking through the
402 various diagrams to see if you can tell.
403 
404 If your model isn't listed and/or has different settings, PLEASE PLEASE
405 tell me.  I had to figure mine out without the manual, and it WASN'T FUN!
406 
407 Even if your ARCnet model isn't listed, but has the same jumpers as another
408 model that is, please e-mail me to say so.
409 
410 Cards Listed in this file (in this order, mostly):
411 
412         =============== ======================= ====
413         Manufacturer    Model #                 Bits
414         =============== ======================= ====
415         SMC             PC100                   8
416         SMC             PC110                   8
417         SMC             PC120                   8
418         SMC             PC130                   8
419         SMC             PC270E                  8
420         SMC             PC500                   16
421         SMC             PC500Longboard          16
422         SMC             PC550Longboard          16
423         SMC             PC600                   16
424         SMC             PC710                   8
425         SMC?            LCS-8830(-T)            8/16
426         Puredata        PDI507                  8
427         CNet Tech       CN120-Series            8
428         CNet Tech       CN160-Series            16
429         Lantech?        UM9065L chipset         8
430         Acer            5210-003                8
431         Datapoint?      LAN-ARC-8               8
432         Topware         TA-ARC/10               8
433         Thomas-Conrad   500-6242-0097 REV A     8
434         Waterloo?       (C)1985 Waterloo Micro. 8
435         No Name         --                      8/16
436         No Name         Taiwan R.O.C?           8
437         No Name         Model 9058              8
438         Tiara           Tiara Lancard?          8
439         =============== ======================= ====
440 
441 
442 * SMC = Standard Microsystems Corp.
443 * CNet Tech = CNet Technology, Inc.
444 
445 Unclassified Stuff
446 ==================
447 
448   - Please send any other information you can find.
449 
450   - And some other stuff (more info is welcome!)::
451 
452      From: root@ultraworld.xs4all.nl (Timo Hilbrink)
453      To: apenwarr@foxnet.net (Avery Pennarun)
454      Date: Wed, 26 Oct 1994 02:10:32 +0000 (GMT)
455      Reply-To: timoh@xs4all.nl
456 
457      [...parts deleted...]
458 
459      About the jumpers: On my PC130 there is one more jumper, located near the
460      cable-connector and it's for changing to star or bus topology;
461      closed: star - open: bus
462      On the PC500 are some more jumper-pins, one block labeled with RX,PDN,TXI
463      and another with ALE,LA17,LA18,LA19 these are undocumented..
464 
465      [...more parts deleted...]
466 
467      --- CUT ---
468 
469 Standard Microsystems Corp (SMC)
470 ================================
471 
472 PC100, PC110, PC120, PC130 (8-bit cards) and PC500, PC600 (16-bit cards)
473 ------------------------------------------------------------------------
474 
475   - mainly from Avery Pennarun <apenwarr@worldvisions.ca>.  Values depicted
476     are from Avery's setup.
477   - special thanks to Timo Hilbrink <timoh@xs4all.nl> for noting that PC120,
478     130, 500, and 600 all have the same switches as Avery's PC100.
479     PC500/600 have several extra, undocumented pins though. (?)
480   - PC110 settings were verified by Stephen A. Wood <saw@cebaf.gov>
481   - Also, the JP- and S-numbers probably don't match your card exactly.  Try
482     to find jumpers/switches with the same number of settings - it's
483     probably more reliable.
484 
485 ::
486 
487              JP5                       [|]    :    :    :    :
488         (IRQ Setting)                 IRQ2  IRQ3 IRQ4 IRQ5 IRQ7
489                         Put exactly one jumper on exactly one set of pins.
490 
491 
492                                   1  2   3  4  5  6   7  8  9 10
493              S1                /----------------------------------\
494         (I/O and Memory        |  1  1 * 0  0  0  0 * 1  1  0  1  |
495          addresses)            \----------------------------------/
496                                   |--|   |--------|   |--------|
497                                   (a)       (b)           (m)
498 
499                         WARNING.  It's very important when setting these which way
500                         you're holding the card, and which way you think is '1'!
501 
502                         If you suspect that your settings are not being made
503                         correctly, try reversing the direction or inverting the
504                         switch positions.
505 
506                         a: The first digit of the I/O address.
507                                 Setting         Value
508                                 -------         -----
509                                 00              0
510                                 01              1
511                                 10              2
512                                 11              3
513 
514                         b: The second digit of the I/O address.
515                                 Setting         Value
516                                 -------         -----
517                                 0000            0
518                                 0001            1
519                                 0010            2
520                                 ...             ...
521                                 1110            E
522                                 1111            F
523 
524                         The I/O address is in the form ab0.  For example, if
525                         a is 0x2 and b is 0xE, the address will be 0x2E0.
526 
527                         DO NOT SET THIS LESS THAN 0x200!!!!!
528 
529 
530                         m: The first digit of the memory address.
531                                 Setting         Value
532                                 -------         -----
533                                 0000            0
534                                 0001            1
535                                 0010            2
536                                 ...             ...
537                                 1110            E
538                                 1111            F
539 
540                         The memory address is in the form m0000.  For example, if
541                         m is D, the address will be 0xD0000.
542 
543                         DO NOT SET THIS TO C0000, F0000, OR LESS THAN A0000!
544 
545                                   1  2  3  4  5  6  7  8
546              S2                /--------------------------\
547         (Station Address)      |  1  1  0  0  0  0  0  0  |
548                                \--------------------------/
549 
550                                 Setting         Value
551                                 -------         -----
552                                 00000000        00
553                                 10000000        01
554                                 01000000        02
555                                 ...
556                                 01111111        FE
557                                 11111111        FF
558 
559                         Note that this is binary with the digits reversed!
560 
561                         DO NOT SET THIS TO 0 OR 255 (0xFF)!
562 
563 
564 PC130E/PC270E (8-bit cards)
565 ---------------------------
566 
567   - from Juergen Seifert <seifert@htwm.de>
568 
569 This description has been written by Juergen Seifert <seifert@htwm.de>
570 using information from the following Original SMC Manual
571 
572              "Configuration Guide for ARCNET(R)-PC130E/PC270 Network
573              Controller Boards Pub. # 900.044A June, 1989"
574 
575 ARCNET is a registered trademark of the Datapoint Corporation
576 SMC is a registered trademark of the Standard Microsystems Corporation
577 
578 The PC130E is an enhanced version of the PC130 board, is equipped with a
579 standard BNC female connector for connection to RG-62/U coax cable.
580 Since this board is designed both for point-to-point connection in star
581 networks and for connection to bus networks, it is downwardly compatible
582 with all the other standard boards designed for coax networks (that is,
583 the PC120, PC110 and PC100 star topology boards and the PC220, PC210 and
584 PC200 bus topology boards).
585 
586 The PC270E is an enhanced version of the PC260 board, is equipped with two
587 modular RJ11-type jacks for connection to twisted pair wiring.
588 It can be used in a star or a daisy-chained network.
589 
590 ::
591 
592          8 7 6 5 4 3 2 1
593     ________________________________________________________________
594    |   |       S1        |                                          |
595    |   |_________________|                                          |
596    |    Offs|Base |I/O Addr                                         |
597    |     RAM Addr |                                              ___|
598    |         ___  ___                                       CR3 |___|
599    |        |   \/   |                                      CR4 |___|
600    |        |  PROM  |                                           ___|
601    |        |        |                                        N |   | 8
602    |        | SOCKET |                                        o |   | 7
603    |        |________|                                        d |   | 6
604    |                   ___________________                    e |   | 5
605    |                  |                   |                   A | S | 4
606    |       |oo| EXT2  |                   |                   d | 2 | 3
607    |       |oo| EXT1  |       SMC         |                   d |   | 2
608    |       |oo| ROM   |      90C63        |                   r |___| 1
609    |       |oo| IRQ7  |                   |               |o|  _____|
610    |       |oo| IRQ5  |                   |               |o| | J1  |
611    |       |oo| IRQ4  |                   |              STAR |_____|
612    |       |oo| IRQ3  |                   |                   | J2  |
613    |       |oo| IRQ2  |___________________|                   |_____|
614    |___                                               ______________|
615        |                                             |
616        |_____________________________________________|
617 
618 Legend::
619 
620   SMC 90C63     ARCNET Controller / Transceiver /Logic
621   S1    1-3:    I/O Base Address Select
622         4-6:    Memory Base Address Select
623         7-8:    RAM Offset Select
624   S2    1-8:    Node ID Select
625   EXT           Extended Timeout Select
626   ROM           ROM Enable Select
627   STAR          Selected - Star Topology        (PC130E only)
628                 Deselected - Bus Topology       (PC130E only)
629   CR3/CR4       Diagnostic LEDs
630   J1            BNC RG62/U Connector            (PC130E only)
631   J1            6-position Telephone Jack       (PC270E only)
632   J2            6-position Telephone Jack       (PC270E only)
633 
634 Setting one of the switches to Off/Open means "1", On/Closed means "0".
635 
636 
637 Setting the Node ID
638 ^^^^^^^^^^^^^^^^^^^
639 
640 The eight switches in group S2 are used to set the node ID.
641 These switches work in a way similar to the PC100-series cards; see that
642 entry for more information.
643 
644 
645 Setting the I/O Base Address
646 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
647 
648 The first three switches in switch group S1 are used to select one
649 of eight possible I/O Base addresses using the following table::
650 
651 
652    Switch | Hex I/O
653    1 2 3  | Address
654    -------|--------
655    0 0 0  |  260
656    0 0 1  |  290
657    0 1 0  |  2E0  (Manufacturer's default)
658    0 1 1  |  2F0
659    1 0 0  |  300
660    1 0 1  |  350
661    1 1 0  |  380
662    1 1 1  |  3E0
663 
664 
665 Setting the Base Memory (RAM) buffer Address
666 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
667 
668 The memory buffer requires 2K of a 16K block of RAM. The base of this
669 16K block can be located in any of eight positions.
670 Switches 4-6 of switch group S1 select the Base of the 16K block.
671 Within that 16K address space, the buffer may be assigned any one of four
672 positions, determined by the offset, switches 7 and 8 of group S1.
673 
674 ::
675 
676    Switch     | Hex RAM | Hex ROM
677    4 5 6  7 8 | Address | Address *)
678    -----------|---------|-----------
679    0 0 0  0 0 |  C0000  |  C2000
680    0 0 0  0 1 |  C0800  |  C2000
681    0 0 0  1 0 |  C1000  |  C2000
682    0 0 0  1 1 |  C1800  |  C2000
683               |         |
684    0 0 1  0 0 |  C4000  |  C6000
685    0 0 1  0 1 |  C4800  |  C6000
686    0 0 1  1 0 |  C5000  |  C6000
687    0 0 1  1 1 |  C5800  |  C6000
688               |         |
689    0 1 0  0 0 |  CC000  |  CE000
690    0 1 0  0 1 |  CC800  |  CE000
691    0 1 0  1 0 |  CD000  |  CE000
692    0 1 0  1 1 |  CD800  |  CE000
693               |         |
694    0 1 1  0 0 |  D0000  |  D2000  (Manufacturer's default)
695    0 1 1  0 1 |  D0800  |  D2000
696    0 1 1  1 0 |  D1000  |  D2000
697    0 1 1  1 1 |  D1800  |  D2000
698               |         |
699    1 0 0  0 0 |  D4000  |  D6000
700    1 0 0  0 1 |  D4800  |  D6000
701    1 0 0  1 0 |  D5000  |  D6000
702    1 0 0  1 1 |  D5800  |  D6000
703               |         |
704    1 0 1  0 0 |  D8000  |  DA000
705    1 0 1  0 1 |  D8800  |  DA000
706    1 0 1  1 0 |  D9000  |  DA000
707    1 0 1  1 1 |  D9800  |  DA000
708               |         |
709    1 1 0  0 0 |  DC000  |  DE000
710    1 1 0  0 1 |  DC800  |  DE000
711    1 1 0  1 0 |  DD000  |  DE000
712    1 1 0  1 1 |  DD800  |  DE000
713               |         |
714    1 1 1  0 0 |  E0000  |  E2000
715    1 1 1  0 1 |  E0800  |  E2000
716    1 1 1  1 0 |  E1000  |  E2000
717    1 1 1  1 1 |  E1800  |  E2000
718 
719   *) To enable the 8K Boot PROM install the jumper ROM.
720      The default is jumper ROM not installed.
721 
722 
723 Setting the Timeouts and Interrupt
724 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
725 
726 The jumpers labeled EXT1 and EXT2 are used to determine the timeout
727 parameters. These two jumpers are normally left open.
728 
729 To select a hardware interrupt level set one (only one!) of the jumpers
730 IRQ2, IRQ3, IRQ4, IRQ5, IRQ7. The Manufacturer's default is IRQ2.
731 
732 
733 Configuring the PC130E for Star or Bus Topology
734 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
735 
736 The single jumper labeled STAR is used to configure the PC130E board for
737 star or bus topology.
738 When the jumper is installed, the board may be used in a star network, when
739 it is removed, the board can be used in a bus topology.
740 
741 
742 Diagnostic LEDs
743 ^^^^^^^^^^^^^^^
744 
745 Two diagnostic LEDs are visible on the rear bracket of the board.
746 The green LED monitors the network activity: the red one shows the
747 board activity::
748 
749  Green  | Status               Red      | Status
750  -------|-------------------   ---------|-------------------
751   on    | normal activity      flash/on | data transfer
752   blink | reconfiguration      off      | no data transfer;
753   off   | defective board or            | incorrect memory or
754         | node ID is zero               | I/O address
755 
756 
757 PC500/PC550 Longboard (16-bit cards)
758 ------------------------------------
759 
760   - from Juergen Seifert <seifert@htwm.de>
761 
762 
763   .. note::
764 
765       There is another Version of the PC500 called Short Version, which
766       is different in hard- and software! The most important differences
767       are:
768 
769       - The long board has no Shared memory.
770       - On the long board the selection of the interrupt is done by binary
771         coded switch, on the short board directly by jumper.
772 
773 [Avery's note: pay special attention to that: the long board HAS NO SHARED
774 MEMORY.  This means the current Linux-ARCnet driver can't use these cards.
775 I have obtained a PC500Longboard and will be doing some experiments on it in
776 the future, but don't hold your breath.  Thanks again to Juergen Seifert for
777 his advice about this!]
778 
779 This description has been written by Juergen Seifert <seifert@htwm.de>
780 using information from the following Original SMC Manual
781 
782          "Configuration Guide for SMC ARCNET-PC500/PC550
783          Series Network Controller Boards Pub. # 900.033 Rev. A
784          November, 1989"
785 
786 ARCNET is a registered trademark of the Datapoint Corporation
787 SMC is a registered trademark of the Standard Microsystems Corporation
788 
789 The PC500 is equipped with a standard BNC female connector for connection
790 to RG-62/U coax cable.
791 The board is designed both for point-to-point connection in star networks
792 and for connection to bus networks.
793 
794 The PC550 is equipped with two modular RJ11-type jacks for connection
795 to twisted pair wiring.
796 It can be used in a star or a daisy-chained (BUS) network.
797 
798 ::
799 
800        1
801        0 9 8 7 6 5 4 3 2 1     6 5 4 3 2 1
802     ____________________________________________________________________
803    < |         SW1         | |     SW2     |                            |
804    > |_____________________| |_____________|                            |
805    <   IRQ    |I/O Addr                                                 |
806    >                                                                 ___|
807    <                                                            CR4 |___|
808    >                                                            CR3 |___|
809    <                                                                 ___|
810    >                                                              N |   | 8
811    <                                                              o |   | 7
812    >                                                              d | S | 6
813    <                                                              e | W | 5
814    >                                                              A | 3 | 4
815    <                                                              d |   | 3
816    >                                                              d |   | 2
817    <                                                              r |___| 1
818    >                                                        |o|    _____|
819    <                                                        |o|   | J1  |
820    >  3 1                                                   JP6   |_____|
821    < |o|o| JP2                                                    | J2  |
822    > |o|o|                                                        |_____|
823    <  4 2__                                               ______________|
824    >    |  |                                             |
825    <____|  |_____________________________________________|
826 
827 Legend::
828 
829   SW1   1-6:    I/O Base Address Select
830         7-10:   Interrupt Select
831   SW2   1-6:    Reserved for Future Use
832   SW3   1-8:    Node ID Select
833   JP2   1-4:    Extended Timeout Select
834   JP6           Selected - Star Topology        (PC500 only)
835                 Deselected - Bus Topology       (PC500 only)
836   CR3   Green   Monitors Network Activity
837   CR4   Red     Monitors Board Activity
838   J1            BNC RG62/U Connector            (PC500 only)
839   J1            6-position Telephone Jack       (PC550 only)
840   J2            6-position Telephone Jack       (PC550 only)
841 
842 Setting one of the switches to Off/Open means "1", On/Closed means "0".
843 
844 
845 Setting the Node ID
846 ^^^^^^^^^^^^^^^^^^^
847 
848 The eight switches in group SW3 are used to set the node ID. Each node
849 attached to the network must have an unique node ID which must be
850 different from 0.
851 Switch 1 serves as the least significant bit (LSB).
852 
853 The node ID is the sum of the values of all switches set to "1"
854 These values are::
855 
856     Switch | Value
857     -------|-------
858       1    |   1
859       2    |   2
860       3    |   4
861       4    |   8
862       5    |  16
863       6    |  32
864       7    |  64
865       8    | 128
866 
867 Some Examples::
868 
869     Switch         | Hex     | Decimal
870    8 7 6 5 4 3 2 1 | Node ID | Node ID
871    ----------------|---------|---------
872    0 0 0 0 0 0 0 0 |    not allowed
873    0 0 0 0 0 0 0 1 |    1    |    1
874    0 0 0 0 0 0 1 0 |    2    |    2
875    0 0 0 0 0 0 1 1 |    3    |    3
876        . . .       |         |
877    0 1 0 1 0 1 0 1 |   55    |   85
878        . . .       |         |
879    1 0 1 0 1 0 1 0 |   AA    |  170
880        . . .       |         |
881    1 1 1 1 1 1 0 1 |   FD    |  253
882    1 1 1 1 1 1 1 0 |   FE    |  254
883    1 1 1 1 1 1 1 1 |   FF    |  255
884 
885 
886 Setting the I/O Base Address
887 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
888 
889 The first six switches in switch group SW1 are used to select one
890 of 32 possible I/O Base addresses using the following table::
891 
892    Switch       | Hex I/O
893    6 5  4 3 2 1 | Address
894    -------------|--------
895    0 1  0 0 0 0 |  200
896    0 1  0 0 0 1 |  210
897    0 1  0 0 1 0 |  220
898    0 1  0 0 1 1 |  230
899    0 1  0 1 0 0 |  240
900    0 1  0 1 0 1 |  250
901    0 1  0 1 1 0 |  260
902    0 1  0 1 1 1 |  270
903    0 1  1 0 0 0 |  280
904    0 1  1 0 0 1 |  290
905    0 1  1 0 1 0 |  2A0
906    0 1  1 0 1 1 |  2B0
907    0 1  1 1 0 0 |  2C0
908    0 1  1 1 0 1 |  2D0
909    0 1  1 1 1 0 |  2E0 (Manufacturer's default)
910    0 1  1 1 1 1 |  2F0
911    1 1  0 0 0 0 |  300
912    1 1  0 0 0 1 |  310
913    1 1  0 0 1 0 |  320
914    1 1  0 0 1 1 |  330
915    1 1  0 1 0 0 |  340
916    1 1  0 1 0 1 |  350
917    1 1  0 1 1 0 |  360
918    1 1  0 1 1 1 |  370
919    1 1  1 0 0 0 |  380
920    1 1  1 0 0 1 |  390
921    1 1  1 0 1 0 |  3A0
922    1 1  1 0 1 1 |  3B0
923    1 1  1 1 0 0 |  3C0
924    1 1  1 1 0 1 |  3D0
925    1 1  1 1 1 0 |  3E0
926    1 1  1 1 1 1 |  3F0
927 
928 
929 Setting the Interrupt
930 ^^^^^^^^^^^^^^^^^^^^^
931 
932 Switches seven through ten of switch group SW1 are used to select the
933 interrupt level. The interrupt level is binary coded, so selections
934 from 0 to 15 would be possible, but only the following eight values will
935 be supported: 3, 4, 5, 7, 9, 10, 11, 12.
936 
937 ::
938 
939    Switch   | IRQ
940    10 9 8 7 |
941    ---------|--------
942     0 0 1 1 |  3
943     0 1 0 0 |  4
944     0 1 0 1 |  5
945     0 1 1 1 |  7
946     1 0 0 1 |  9 (=2) (default)
947     1 0 1 0 | 10
948     1 0 1 1 | 11
949     1 1 0 0 | 12
950 
951 
952 Setting the Timeouts
953 ^^^^^^^^^^^^^^^^^^^^
954 
955 The two jumpers JP2 (1-4) are used to determine the timeout parameters.
956 These two jumpers are normally left open.
957 Refer to the COM9026 Data Sheet for alternate configurations.
958 
959 
960 Configuring the PC500 for Star or Bus Topology
961 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
962 
963 The single jumper labeled JP6 is used to configure the PC500 board for
964 star or bus topology.
965 When the jumper is installed, the board may be used in a star network, when
966 it is removed, the board can be used in a bus topology.
967 
968 
969 Diagnostic LEDs
970 ^^^^^^^^^^^^^^^
971 
972 Two diagnostic LEDs are visible on the rear bracket of the board.
973 The green LED monitors the network activity: the red one shows the
974 board activity::
975 
976  Green  | Status               Red      | Status
977  -------|-------------------   ---------|-------------------
978   on    | normal activity      flash/on | data transfer
979   blink | reconfiguration      off      | no data transfer;
980   off   | defective board or            | incorrect memory or
981         | node ID is zero               | I/O address
982 
983 
984 PC710 (8-bit card)
985 ------------------
986 
987   - from J.S. van Oosten <jvoosten@compiler.tdcnet.nl>
988 
989 Note: this data is gathered by experimenting and looking at info of other
990 cards. However, I'm sure I got 99% of the settings right.
991 
992 The SMC710 card resembles the PC270 card, but is much more basic (i.e. no
993 LEDs, RJ11 jacks, etc.) and 8 bit. Here's a little drawing::
994 
995     _______________________________________
996    | +---------+  +---------+              |____
997    | |   S2    |  |   S1    |              |
998    | +---------+  +---------+              |
999    |                                       |
1000    |  +===+    __                          |
1001    |  | R |   |  | X-tal                 ###___
1002    |  | O |   |__|                      ####__'|
1003    |  | M |    ||                        ###
1004    |  +===+                                |
1005    |                                       |
1006    |   .. JP1   +----------+               |
1007    |   ..       | big chip |               |
1008    |   ..       |  90C63   |               |
1009    |   ..       |          |               |
1010    |   ..       +----------+               |
1011     -------                     -----------
1012            |||||||||||||||||||||
1013 
1014 The row of jumpers at JP1 actually consists of 8 jumpers, (sometimes
1015 labelled) the same as on the PC270, from top to bottom: EXT2, EXT1, ROM,
1016 IRQ7, IRQ5, IRQ4, IRQ3, IRQ2 (gee, wonder what they would do? :-) )
1017 
1018 S1 and S2 perform the same function as on the PC270, only their numbers
1019 are swapped (S1 is the nodeaddress, S2 sets IO- and RAM-address).
1020 
1021 I know it works when connected to a PC110 type ARCnet board.
1022 
1023 
1024 *****************************************************************************
1025 
1026 Possibly SMC
1027 ============
1028 
1029 LCS-8830(-T) (8 and 16-bit cards)
1030 ---------------------------------
1031 
1032   - from Mathias Katzer <mkatzer@HRZ.Uni-Bielefeld.DE>
1033   - Marek Michalkiewicz <marekm@i17linuxb.ists.pwr.wroc.pl> says the
1034     LCS-8830 is slightly different from LCS-8830-T.  These are 8 bit, BUS
1035     only (the JP0 jumper is hardwired), and BNC only.
1036 
1037 This is a LCS-8830-T made by SMC, I think ('SMC' only appears on one PLCC,
1038 nowhere else, not even on the few Xeroxed sheets from the manual).
1039 
1040 SMC ARCnet Board Type LCS-8830-T::
1041 
1042      ------------------------------------
1043     |                                    |
1044     |              JP3 88  8 JP2         |
1045     |       #####      | \               |
1046     |       #####    ET1 ET2          ###|
1047     |                              8  ###|
1048     |  U3   SW 1                  JP0 ###|  Phone Jacks
1049     |  --                             ###|
1050     | |  |                               |
1051     | |  |   SW2                         |
1052     | |  |                               |
1053     | |  |  #####                        |
1054     |  --   #####                       ####  BNC Connector
1055     |                                   ####
1056     |   888888 JP1                       |
1057     |   234567                           |
1058      --                           -------
1059        |||||||||||||||||||||||||||
1060         --------------------------
1061 
1062 
1063   SW1: DIP-Switches for Station Address
1064   SW2: DIP-Switches for Memory Base and I/O Base addresses
1065 
1066   JP0: If closed, internal termination on (default open)
1067   JP1: IRQ Jumpers
1068   JP2: Boot-ROM enabled if closed
1069   JP3: Jumpers for response timeout
1070 
1071   U3: Boot-ROM Socket
1072 
1073 
1074   ET1 ET2     Response Time     Idle Time    Reconfiguration Time
1075 
1076                  78                86               840
1077    X            285               316              1680
1078        X        563               624              1680
1079    X   X       1130              1237              1680
1080 
1081   (X means closed jumper)
1082 
1083   (DIP-Switch downwards means "0")
1084 
1085 The station address is binary-coded with SW1.
1086 
1087 The I/O base address is coded with DIP-Switches 6,7 and 8 of SW2:
1088 
1089 ========        ========
1090 Switches        Base
1091 678             Address
1092 ========        ========
1093 000             260-26f
1094 100             290-29f
1095 010             2e0-2ef
1096 110             2f0-2ff
1097 001             300-30f
1098 101             350-35f
1099 011             380-38f
1100 111             3e0-3ef
1101 ========        ========
1102 
1103 
1104 DIP Switches 1-5 of SW2 encode the RAM and ROM Address Range:
1105 
1106 ========        ============= ================
1107 Switches        RAM           ROM
1108 12345           Address Range  Address Range
1109 ========        ============= ================
1110 00000           C:0000-C:07ff   C:2000-C:3fff
1111 10000           C:0800-C:0fff
1112 01000           C:1000-C:17ff
1113 11000           C:1800-C:1fff
1114 00100           C:4000-C:47ff   C:6000-C:7fff
1115 10100           C:4800-C:4fff
1116 01100           C:5000-C:57ff
1117 11100           C:5800-C:5fff
1118 00010           C:C000-C:C7ff   C:E000-C:ffff
1119 10010           C:C800-C:Cfff
1120 01010           C:D000-C:D7ff
1121 11010           C:D800-C:Dfff
1122 00110           D:0000-D:07ff   D:2000-D:3fff
1123 10110           D:0800-D:0fff
1124 01110           D:1000-D:17ff
1125 11110           D:1800-D:1fff
1126 00001           D:4000-D:47ff   D:6000-D:7fff
1127 10001           D:4800-D:4fff
1128 01001           D:5000-D:57ff
1129 11001           D:5800-D:5fff
1130 00101           D:8000-D:87ff   D:A000-D:bfff
1131 10101           D:8800-D:8fff
1132 01101           D:9000-D:97ff
1133 11101           D:9800-D:9fff
1134 00011           D:C000-D:c7ff   D:E000-D:ffff
1135 10011           D:C800-D:cfff
1136 01011           D:D000-D:d7ff
1137 11011           D:D800-D:dfff
1138 00111           E:0000-E:07ff   E:2000-E:3fff
1139 10111           E:0800-E:0fff
1140 01111           E:1000-E:17ff
1141 11111           E:1800-E:1fff
1142 ========        ============= ================
1143 
1144 
1145 PureData Corp
1146 =============
1147 
1148 PDI507 (8-bit card)
1149 --------------------
1150 
1151   - from Mark Rejhon <mdrejhon@magi.com> (slight modifications by Avery)
1152   - Avery's note: I think PDI508 cards (but definitely NOT PDI508Plus cards)
1153     are mostly the same as this.  PDI508Plus cards appear to be mainly
1154     software-configured.
1155 
1156 Jumpers:
1157 
1158         There is a jumper array at the bottom of the card, near the edge
1159         connector.  This array is labelled J1.  They control the IRQs and
1160         something else.  Put only one jumper on the IRQ pins.
1161 
1162         ETS1, ETS2 are for timing on very long distance networks.  See the
1163         more general information near the top of this file.
1164 
1165         There is a J2 jumper on two pins.  A jumper should be put on them,
1166         since it was already there when I got the card.  I don't know what
1167         this jumper is for though.
1168 
1169         There is a two-jumper array for J3.  I don't know what it is for,
1170         but there were already two jumpers on it when I got the card.  It's
1171         a six pin grid in a two-by-three fashion.  The jumpers were
1172         configured as follows::
1173 
1174            .-------.
1175          o | o   o |
1176            :-------:    ------> Accessible end of card with connectors
1177          o | o   o |             in this direction ------->
1178            `-------'
1179 
1180 Carl de Billy <CARL@carainfo.com> explains J3 and J4:
1181 
1182    J3 Diagram::
1183 
1184            .-------.
1185          o | o   o |
1186            :-------:    TWIST Technology
1187          o | o   o |
1188            `-------'
1189            .-------.
1190            | o   o | o
1191            :-------:    COAX Technology
1192            | o   o | o
1193            `-------'
1194 
1195   - If using coax cable in a bus topology the J4 jumper must be removed;
1196     place it on one pin.
1197 
1198   - If using bus topology with twisted pair wiring move the J3
1199     jumpers so they connect the middle pin and the pins closest to the RJ11
1200     Connectors.  Also the J4 jumper must be removed; place it on one pin of
1201     J4 jumper for storage.
1202 
1203   - If using  star topology with twisted pair wiring move the J3
1204     jumpers so they connect the middle pin and the pins closest to the RJ11
1205     connectors.
1206 
1207 
1208 DIP Switches:
1209 
1210         The DIP switches accessible on the accessible end of the card while
1211         it is installed, is used to set the ARCnet address.  There are 8
1212         switches.  Use an address from 1 to 254
1213 
1214         ==========      =========================
1215         Switch No.      ARCnet address
1216         12345678
1217         ==========      =========================
1218         00000000        FF      (Don't use this!)
1219         00000001        FE
1220         00000010        FD
1221         ...
1222         11111101        2
1223         11111110        1
1224         11111111        0       (Don't use this!)
1225         ==========      =========================
1226 
1227         There is another array of eight DIP switches at the top of the
1228         card.  There are five labelled MS0-MS4 which seem to control the
1229         memory address, and another three labelled IO0-IO2 which seem to
1230         control the base I/O address of the card.
1231 
1232         This was difficult to test by trial and error, and the I/O addresses
1233         are in a weird order.  This was tested by setting the DIP switches,
1234         rebooting the computer, and attempting to load ARCETHER at various
1235         addresses (mostly between 0x200 and 0x400).  The address that caused
1236         the red transmit LED to blink, is the one that I thought works.
1237 
1238         Also, the address 0x3D0 seem to have a special meaning, since the
1239         ARCETHER packet driver loaded fine, but without the red LED
1240         blinking.  I don't know what 0x3D0 is for though.  I recommend using
1241         an address of 0x300 since Windows may not like addresses below
1242         0x300.
1243 
1244         =============   ===========
1245         IO Switch No.   I/O address
1246         210
1247         =============   ===========
1248         111             0x260
1249         110             0x290
1250         101             0x2E0
1251         100             0x2F0
1252         011             0x300
1253         010             0x350
1254         001             0x380
1255         000             0x3E0
1256         =============   ===========
1257 
1258         The memory switches set a reserved address space of 0x1000 bytes
1259         (0x100 segment units, or 4k).  For example if I set an address of
1260         0xD000, it will use up addresses 0xD000 to 0xD100.
1261 
1262         The memory switches were tested by booting using QEMM386 stealth,
1263         and using LOADHI to see what address automatically became excluded
1264         from the upper memory regions, and then attempting to load ARCETHER
1265         using these addresses.
1266 
1267         I recommend using an ARCnet memory address of 0xD000, and putting
1268         the EMS page frame at 0xC000 while using QEMM stealth mode.  That
1269         way, you get contiguous high memory from 0xD100 almost all the way
1270         the end of the megabyte.
1271 
1272         Memory Switch 0 (MS0) didn't seem to work properly when set to OFF
1273         on my card.  It could be malfunctioning on my card.  Experiment with
1274         it ON first, and if it doesn't work, set it to OFF.  (It may be a
1275         modifier for the 0x200 bit?)
1276 
1277         =============   ============================================
1278         MS Switch No.
1279         43210           Memory address
1280         =============   ============================================
1281         00001           0xE100  (guessed - was not detected by QEMM)
1282         00011           0xE000  (guessed - was not detected by QEMM)
1283         00101           0xDD00
1284         00111           0xDC00
1285         01001           0xD900
1286         01011           0xD800
1287         01101           0xD500
1288         01111           0xD400
1289         10001           0xD100
1290         10011           0xD000
1291         10101           0xCD00
1292         10111           0xCC00
1293         11001           0xC900 (guessed - crashes tested system)
1294         11011           0xC800 (guessed - crashes tested system)
1295         11101           0xC500 (guessed - crashes tested system)
1296         11111           0xC400 (guessed - crashes tested system)
1297         =============   ============================================
1298 
1299 CNet Technology Inc. (8-bit cards)
1300 ==================================
1301 
1302 120 Series (8-bit cards)
1303 ------------------------
1304   - from Juergen Seifert <seifert@htwm.de>
1305 
1306 This description has been written by Juergen Seifert <seifert@htwm.de>
1307 using information from the following Original CNet Manual
1308 
1309               "ARCNET USER'S MANUAL for
1310               CN120A
1311               CN120AB
1312               CN120TP
1313               CN120ST
1314               CN120SBT
1315               P/N:12-01-0007
1316               Revision 3.00"
1317 
1318 ARCNET is a registered trademark of the Datapoint Corporation
1319 
1320 - P/N 120A   ARCNET 8 bit XT/AT Star
1321 - P/N 120AB  ARCNET 8 bit XT/AT Bus
1322 - P/N 120TP  ARCNET 8 bit XT/AT Twisted Pair
1323 - P/N 120ST  ARCNET 8 bit XT/AT Star, Twisted Pair
1324 - P/N 120SBT ARCNET 8 bit XT/AT Star, Bus, Twisted Pair
1325 
1326 ::
1327 
1328     __________________________________________________________________
1329    |                                                                  |
1330    |                                                               ___|
1331    |                                                          LED |___|
1332    |                                                               ___|
1333    |                                                            N |   | ID7
1334    |                                                            o |   | ID6
1335    |                                                            d | S | ID5
1336    |                                                            e | W | ID4
1337    |                     ___________________                    A | 2 | ID3
1338    |                    |                   |                   d |   | ID2
1339    |                    |                   |  1 2 3 4 5 6 7 8  d |   | ID1
1340    |                    |                   | _________________ r |___| ID0
1341    |                    |      90C65        ||       SW1       |  ____|
1342    |  JP 8 7            |                   ||_________________| |    |
1343    |    |o|o|  JP1      |                   |                    | J2 |
1344    |    |o|o|  |oo|     |                   |         JP 1 1 1   |    |
1345    |   ______________   |                   |            0 1 2   |____|
1346    |  |  PROM        |  |___________________|           |o|o|o|  _____|
1347    |  >  SOCKET      |  JP 6 5 4 3 2                    |o|o|o| | J1  |
1348    |  |______________|    |o|o|o|o|o|                   |o|o|o| |_____|
1349    |_____                 |o|o|o|o|o|                   ______________|
1350          |                                             |
1351          |_____________________________________________|
1352 
1353 Legend::
1354 
1355   90C65       ARCNET Probe
1356   S1  1-5:    Base Memory Address Select
1357       6-8:    Base I/O Address Select
1358   S2  1-8:    Node ID Select (ID0-ID7)
1359   JP1     ROM Enable Select
1360   JP2     IRQ2
1361   JP3     IRQ3
1362   JP4     IRQ4
1363   JP5     IRQ5
1364   JP6     IRQ7
1365   JP7/JP8     ET1, ET2 Timeout Parameters
1366   JP10/JP11   Coax / Twisted Pair Select  (CN120ST/SBT only)
1367   JP12        Terminator Select       (CN120AB/ST/SBT only)
1368   J1      BNC RG62/U Connector        (all except CN120TP)
1369   J2      Two 6-position Telephone Jack   (CN120TP/ST/SBT only)
1370 
1371 Setting one of the switches to Off means "1", On means "0".
1372 
1373 
1374 Setting the Node ID
1375 ^^^^^^^^^^^^^^^^^^^
1376 
1377 The eight switches in SW2 are used to set the node ID. Each node attached
1378 to the network must have an unique node ID which must be different from 0.
1379 Switch 1 (ID0) serves as the least significant bit (LSB).
1380 
1381 The node ID is the sum of the values of all switches set to "1"
1382 These values are:
1383 
1384    =======  ======  =====
1385    Switch   Label   Value
1386    =======  ======  =====
1387      1      ID0       1
1388      2      ID1       2
1389      3      ID2       4
1390      4      ID3       8
1391      5      ID4      16
1392      6      ID5      32
1393      7      ID6      64
1394      8      ID7     128
1395    =======  ======  =====
1396 
1397 Some Examples::
1398 
1399     Switch         | Hex     | Decimal
1400    8 7 6 5 4 3 2 1 | Node ID | Node ID
1401    ----------------|---------|---------
1402    0 0 0 0 0 0 0 0 |    not allowed
1403    0 0 0 0 0 0 0 1 |    1    |    1
1404    0 0 0 0 0 0 1 0 |    2    |    2
1405    0 0 0 0 0 0 1 1 |    3    |    3
1406        . . .       |         |
1407    0 1 0 1 0 1 0 1 |   55    |   85
1408        . . .       |         |
1409    1 0 1 0 1 0 1 0 |   AA    |  170
1410        . . .       |         |
1411    1 1 1 1 1 1 0 1 |   FD    |  253
1412    1 1 1 1 1 1 1 0 |   FE    |  254
1413    1 1 1 1 1 1 1 1 |   FF    |  255
1414 
1415 
1416 Setting the I/O Base Address
1417 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1418 
1419 The last three switches in switch block SW1 are used to select one
1420 of eight possible I/O Base addresses using the following table::
1421 
1422 
1423    Switch      | Hex I/O
1424     6   7   8  | Address
1425    ------------|--------
1426    ON  ON  ON  |  260
1427    OFF ON  ON  |  290
1428    ON  OFF ON  |  2E0  (Manufacturer's default)
1429    OFF OFF ON  |  2F0
1430    ON  ON  OFF |  300
1431    OFF ON  OFF |  350
1432    ON  OFF OFF |  380
1433    OFF OFF OFF |  3E0
1434 
1435 
1436 Setting the Base Memory (RAM) buffer Address
1437 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1438 
1439 The memory buffer (RAM) requires 2K. The base of this buffer can be
1440 located in any of eight positions. The address of the Boot Prom is
1441 memory base + 8K or memory base + 0x2000.
1442 Switches 1-5 of switch block SW1 select the Memory Base address.
1443 
1444 ::
1445 
1446    Switch              | Hex RAM | Hex ROM
1447     1   2   3   4   5  | Address | Address *)
1448    --------------------|---------|-----------
1449    ON  ON  ON  ON  ON  |  C0000  |  C2000
1450    ON  ON  OFF ON  ON  |  C4000  |  C6000
1451    ON  ON  ON  OFF ON  |  CC000  |  CE000
1452    ON  ON  OFF OFF ON  |  D0000  |  D2000  (Manufacturer's default)
1453    ON  ON  ON  ON  OFF |  D4000  |  D6000
1454    ON  ON  OFF ON  OFF |  D8000  |  DA000
1455    ON  ON  ON  OFF OFF |  DC000  |  DE000
1456    ON  ON  OFF OFF OFF |  E0000  |  E2000
1457 
1458   *) To enable the Boot ROM install the jumper JP1
1459 
1460 .. note::
1461 
1462       Since the switches 1 and 2 are always set to ON it may be possible
1463       that they can be used to add an offset of 2K, 4K or 6K to the base
1464       address, but this feature is not documented in the manual and I
1465       haven't tested it yet.
1466 
1467 
1468 Setting the Interrupt Line
1469 ^^^^^^^^^^^^^^^^^^^^^^^^^^
1470 
1471 To select a hardware interrupt level install one (only one!) of the jumpers
1472 JP2, JP3, JP4, JP5, JP6. JP2 is the default::
1473 
1474    Jumper | IRQ
1475    -------|-----
1476      2    |  2
1477      3    |  3
1478      4    |  4
1479      5    |  5
1480      6    |  7
1481 
1482 
1483 Setting the Internal Terminator on CN120AB/TP/SBT
1484 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1485 
1486 The jumper JP12 is used to enable the internal terminator::
1487 
1488                          -----
1489        0                |  0  |
1490      -----   ON         |     |  ON
1491     |  0  |             |  0  |
1492     |     |  OFF         -----   OFF
1493     |  0  |                0
1494      -----
1495    Terminator          Terminator
1496     disabled            enabled
1497 
1498 
1499 Selecting the Connector Type on CN120ST/SBT
1500 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1501 
1502 ::
1503 
1504      JP10    JP11        JP10    JP11
1505                          -----   -----
1506        0       0        |  0  | |  0  |
1507      -----   -----      |     | |     |
1508     |  0  | |  0  |     |  0  | |  0  |
1509     |     | |     |      -----   -----
1510     |  0  | |  0  |        0       0
1511      -----   -----
1512      Coaxial Cable       Twisted Pair Cable
1513        (Default)
1514 
1515 
1516 Setting the Timeout Parameters
1517 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1518 
1519 The jumpers labeled EXT1 and EXT2 are used to determine the timeout
1520 parameters. These two jumpers are normally left open.
1521 
1522 
1523 CNet Technology Inc. (16-bit cards)
1524 ===================================
1525 
1526 160 Series (16-bit cards)
1527 -------------------------
1528   - from Juergen Seifert <seifert@htwm.de>
1529 
1530 This description has been written by Juergen Seifert <seifert@htwm.de>
1531 using information from the following Original CNet Manual
1532 
1533               "ARCNET USER'S MANUAL for
1534               CN160A CN160AB CN160TP
1535               P/N:12-01-0006 Revision 3.00"
1536 
1537 ARCNET is a registered trademark of the Datapoint Corporation
1538 
1539 - P/N 160A   ARCNET 16 bit XT/AT Star
1540 - P/N 160AB  ARCNET 16 bit XT/AT Bus
1541 - P/N 160TP  ARCNET 16 bit XT/AT Twisted Pair
1542 
1543 ::
1544 
1545    ___________________________________________________________________
1546   <                             _________________________          ___|
1547   >               |oo| JP2     |                         |    LED |___|
1548   <               |oo| JP1     |        9026             |    LED |___|
1549   >                            |_________________________|         ___|
1550   <                                                             N |   | ID7
1551   >                                                      1      o |   | ID6
1552   <                                    1 2 3 4 5 6 7 8 9 0      d | S | ID5
1553   >         _______________           _____________________     e | W | ID4
1554   <        |     PROM      |         |         SW1         |    A | 2 | ID3
1555   >        >    SOCKET     |         |_____________________|    d |   | ID2
1556   <        |_______________|          | IO-Base   | MEM   |     d |   | ID1
1557   >                                                             r |___| ID0
1558   <                                                               ____|
1559   >                                                              |    |
1560   <                                                              | J1 |
1561   >                                                              |    |
1562   <                                                              |____|
1563   >                            1 1 1 1                                |
1564   <  3 4 5 6 7      JP     8 9 0 1 2 3                                |
1565   > |o|o|o|o|o|           |o|o|o|o|o|o|                               |
1566   < |o|o|o|o|o| __        |o|o|o|o|o|o|                    ___________|
1567   >            |  |                                       |
1568   <____________|  |_______________________________________|
1569 
1570 Legend::
1571 
1572   9026            ARCNET Probe
1573   SW1 1-6:    Base I/O Address Select
1574       7-10:   Base Memory Address Select
1575   SW2 1-8:    Node ID Select (ID0-ID7)
1576   JP1/JP2     ET1, ET2 Timeout Parameters
1577   JP3-JP13    Interrupt Select
1578   J1      BNC RG62/U Connector        (CN160A/AB only)
1579   J1      Two 6-position Telephone Jack   (CN160TP only)
1580   LED
1581 
1582 Setting one of the switches to Off means "1", On means "0".
1583 
1584 
1585 Setting the Node ID
1586 ^^^^^^^^^^^^^^^^^^^
1587 
1588 The eight switches in SW2 are used to set the node ID. Each node attached
1589 to the network must have an unique node ID which must be different from 0.
1590 Switch 1 (ID0) serves as the least significant bit (LSB).
1591 
1592 The node ID is the sum of the values of all switches set to "1"
1593 These values are::
1594 
1595    Switch | Label | Value
1596    -------|-------|-------
1597      1    | ID0   |   1
1598      2    | ID1   |   2
1599      3    | ID2   |   4
1600      4    | ID3   |   8
1601      5    | ID4   |  16
1602      6    | ID5   |  32
1603      7    | ID6   |  64
1604      8    | ID7   | 128
1605 
1606 Some Examples::
1607 
1608     Switch         | Hex     | Decimal
1609    8 7 6 5 4 3 2 1 | Node ID | Node ID
1610    ----------------|---------|---------
1611    0 0 0 0 0 0 0 0 |    not allowed
1612    0 0 0 0 0 0 0 1 |    1    |    1
1613    0 0 0 0 0 0 1 0 |    2    |    2
1614    0 0 0 0 0 0 1 1 |    3    |    3
1615        . . .       |         |
1616    0 1 0 1 0 1 0 1 |   55    |   85
1617        . . .       |         |
1618    1 0 1 0 1 0 1 0 |   AA    |  170
1619        . . .       |         |
1620    1 1 1 1 1 1 0 1 |   FD    |  253
1621    1 1 1 1 1 1 1 0 |   FE    |  254
1622    1 1 1 1 1 1 1 1 |   FF    |  255
1623 
1624 
1625 Setting the I/O Base Address
1626 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1627 
1628 The first six switches in switch block SW1 are used to select the I/O Base
1629 address using the following table::
1630 
1631              Switch        | Hex I/O
1632     1   2   3   4   5   6  | Address
1633    ------------------------|--------
1634    OFF ON  ON  OFF OFF ON  |  260
1635    OFF ON  OFF ON  ON  OFF |  290
1636    OFF ON  OFF OFF OFF ON  |  2E0  (Manufacturer's default)
1637    OFF ON  OFF OFF OFF OFF |  2F0
1638    OFF OFF ON  ON  ON  ON  |  300
1639    OFF OFF ON  OFF ON  OFF |  350
1640    OFF OFF OFF ON  ON  ON  |  380
1641    OFF OFF OFF OFF OFF ON  |  3E0
1642 
1643 Note: Other IO-Base addresses seem to be selectable, but only the above
1644       combinations are documented.
1645 
1646 
1647 Setting the Base Memory (RAM) buffer Address
1648 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1649 
1650 The switches 7-10 of switch block SW1 are used to select the Memory
1651 Base address of the RAM (2K) and the PROM::
1652 
1653    Switch          | Hex RAM | Hex ROM
1654     7   8   9  10  | Address | Address
1655    ----------------|---------|-----------
1656    OFF OFF ON  ON  |  C0000  |  C8000
1657    OFF OFF ON  OFF |  D0000  |  D8000 (Default)
1658    OFF OFF OFF ON  |  E0000  |  E8000
1659 
1660 .. note::
1661 
1662       Other MEM-Base addresses seem to be selectable, but only the above
1663       combinations are documented.
1664 
1665 
1666 Setting the Interrupt Line
1667 ^^^^^^^^^^^^^^^^^^^^^^^^^^
1668 
1669 To select a hardware interrupt level install one (only one!) of the jumpers
1670 JP3 through JP13 using the following table::
1671 
1672    Jumper | IRQ
1673    -------|-----------------
1674      3    |  14
1675      4    |  15
1676      5    |  12
1677      6    |  11
1678      7    |  10
1679      8    |   3
1680      9    |   4
1681     10    |   5
1682     11    |   6
1683     12    |   7
1684     13    |   2 (=9) Default!
1685 
1686 .. note::
1687 
1688        - Do not use JP11=IRQ6, it may conflict with your Floppy Disk
1689          Controller
1690        - Use JP3=IRQ14 only, if you don't have an IDE-, MFM-, or RLL-
1691          Hard Disk, it may conflict with their controllers
1692 
1693 
1694 Setting the Timeout Parameters
1695 ------------------------------
1696 
1697 The jumpers labeled JP1 and JP2 are used to determine the timeout
1698 parameters. These two jumpers are normally left open.
1699 
1700 
1701 Lantech
1702 =======
1703 
1704 8-bit card, unknown model
1705 -------------------------
1706   - from Vlad Lungu <vlungu@ugal.ro> - his e-mail address seemed broken at
1707     the time I tried to reach him.  Sorry Vlad, if you didn't get my reply.
1708 
1709 ::
1710 
1711    ________________________________________________________________
1712    |   1         8                                                 |
1713    |   ___________                                               __|
1714    |   |   SW1    |                                         LED |__|
1715    |   |__________|                                                |
1716    |                                                            ___|
1717    |                _____________________                       |S | 8
1718    |                |                   |                       |W |
1719    |                |                   |                       |2 |
1720    |                |                   |                       |__| 1
1721    |                |      UM9065L      |     |o|  JP4         ____|____
1722    |                |                   |     |o|              |  CN    |
1723    |                |                   |                      |________|
1724    |                |                   |                          |
1725    |                |___________________|                          |
1726    |                                                               |
1727    |                                                               |
1728    |      _____________                                            |
1729    |      |            |                                           |
1730    |      |    PROM    |        |ooooo|  JP6                       |
1731    |      |____________|        |ooooo|                            |
1732    |_____________                                             _   _|
1733                 |____________________________________________| |__|
1734 
1735 
1736 UM9065L : ARCnet Controller
1737 
1738 SW 1    : Shared Memory Address and I/O Base
1739 
1740 ::
1741 
1742         ON=0
1743 
1744         12345|Memory Address
1745         -----|--------------
1746         00001|  D4000
1747         00010|  CC000
1748         00110|  D0000
1749         01110|  D1000
1750         01101|  D9000
1751         10010|  CC800
1752         10011|  DC800
1753         11110|  D1800
1754 
1755 It seems that the bits are considered in reverse order.  Also, you must
1756 observe that some of those addresses are unusual and I didn't probe them; I
1757 used a memory dump in DOS to identify them.  For the 00000 configuration and
1758 some others that I didn't write here the card seems to conflict with the
1759 video card (an S3 GENDAC). I leave the full decoding of those addresses to
1760 you.
1761 
1762 ::
1763 
1764         678| I/O Address
1765         ---|------------
1766         000|    260
1767         001|    failed probe
1768         010|    2E0
1769         011|    380
1770         100|    290
1771         101|    350
1772         110|    failed probe
1773         111|    3E0
1774 
1775   SW 2  : Node ID (binary coded)
1776 
1777   JP 4  : Boot PROM enable   CLOSE - enabled
1778                              OPEN  - disabled
1779 
1780   JP 6  : IRQ set (ONLY ONE jumper on 1-5 for IRQ 2-6)
1781 
1782 
1783 Acer
1784 ====
1785 
1786 8-bit card, Model 5210-003
1787 --------------------------
1788 
1789   - from Vojtech Pavlik <vojtech@suse.cz> using portions of the existing
1790     arcnet-hardware file.
1791 
1792 This is a 90C26 based card.  Its configuration seems similar to the SMC
1793 PC100, but has some additional jumpers I don't know the meaning of.
1794 
1795 ::
1796 
1797                __
1798               |  |
1799    ___________|__|_________________________
1800   |         |      |                       |
1801   |         | BNC  |                       |
1802   |         |______|                    ___|
1803   |  _____________________             |___
1804   | |                     |                |
1805   | | Hybrid IC           |                |
1806   | |                     |       o|o J1   |
1807   | |_____________________|       8|8      |
1808   |                               8|8 J5   |
1809   |                               o|o      |
1810   |                               8|8      |
1811   |__                             8|8      |
1812  (|__| LED                        o|o      |
1813   |                               8|8      |
1814   |                               8|8 J15  |
1815   |                                        |
1816   |                    _____               |
1817   |                   |     |   _____      |
1818   |                   |     |  |     |  ___|
1819   |                   |     |  |     | |
1820   |  _____            | ROM |  | UFS | |
1821   | |     |           |     |  |     | |
1822   | |     |     ___   |     |  |     | |
1823   | |     |    |   |  |__.__|  |__.__| |
1824   | | NCR |    |XTL|   _____    _____  |
1825   | |     |    |___|  |     |  |     | |
1826   | |90C26|           |     |  |     | |
1827   | |     |           | RAM |  | UFS | |
1828   | |     | J17 o|o   |     |  |     | |
1829   | |     | J16 o|o   |     |  |     | |
1830   | |__.__|           |__.__|  |__.__| |
1831   |  ___                               |
1832   | |   |8                             |
1833   | |SW2|                              |
1834   | |   |                              |
1835   | |___|1                             |
1836   |  ___                               |
1837   | |   |10           J18 o|o          |
1838   | |   |                 o|o          |
1839   | |SW1|                 o|o          |
1840   | |   |             J21 o|o          |
1841   | |___|1                             |
1842   |                                    |
1843   |____________________________________|
1844 
1845 
1846 Legend::
1847 
1848   90C26       ARCNET Chip
1849   XTL         20 MHz Crystal
1850   SW1 1-6     Base I/O Address Select
1851       7-10    Memory Address Select
1852   SW2 1-8     Node ID Select (ID0-ID7)
1853   J1-J5       IRQ Select
1854   J6-J21      Unknown (Probably extra timeouts & ROM enable ...)
1855   LED1        Activity LED
1856   BNC         Coax connector (STAR ARCnet)
1857   RAM         2k of SRAM
1858   ROM         Boot ROM socket
1859   UFS         Unidentified Flying Sockets
1860 
1861 
1862 Setting the Node ID
1863 ^^^^^^^^^^^^^^^^^^^
1864 
1865 The eight switches in SW2 are used to set the node ID. Each node attached
1866 to the network must have an unique node ID which must not be 0.
1867 Switch 1 (ID0) serves as the least significant bit (LSB).
1868 
1869 Setting one of the switches to OFF means "1", ON means "0".
1870 
1871 The node ID is the sum of the values of all switches set to "1"
1872 These values are::
1873 
1874    Switch | Value
1875    -------|-------
1876      1    |   1
1877      2    |   2
1878      3    |   4
1879      4    |   8
1880      5    |  16
1881      6    |  32
1882      7    |  64
1883      8    | 128
1884 
1885 Don't set this to 0 or 255; these values are reserved.
1886 
1887 
1888 Setting the I/O Base Address
1889 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1890 
1891 The switches 1 to 6 of switch block SW1 are used to select one
1892 of 32 possible I/O Base addresses using the following tables::
1893 
1894           | Hex
1895    Switch | Value
1896    -------|-------
1897      1    | 200
1898      2    | 100
1899      3    |  80
1900      4    |  40
1901      5    |  20
1902      6    |  10
1903 
1904 The I/O address is sum of all switches set to "1". Remember that
1905 the I/O address space below 0x200 is RESERVED for mainboard, so
1906 switch 1 should be ALWAYS SET TO OFF.
1907 
1908 
1909 Setting the Base Memory (RAM) buffer Address
1910 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1911 
1912 The memory buffer (RAM) requires 2K. The base of this buffer can be
1913 located in any of sixteen positions. However, the addresses below
1914 A0000 are likely to cause system hang because there's main RAM.
1915 
1916 Jumpers 7-10 of switch block SW1 select the Memory Base address::
1917 
1918    Switch          | Hex RAM
1919     7   8   9  10  | Address
1920    ----------------|---------
1921    OFF OFF OFF OFF |  F0000 (conflicts with main BIOS)
1922    OFF OFF OFF ON  |  E0000
1923    OFF OFF ON  OFF |  D0000
1924    OFF OFF ON  ON  |  C0000 (conflicts with video BIOS)
1925    OFF ON  OFF OFF |  B0000 (conflicts with mono video)
1926    OFF ON  OFF ON  |  A0000 (conflicts with graphics)
1927 
1928 
1929 Setting the Interrupt Line
1930 ^^^^^^^^^^^^^^^^^^^^^^^^^^
1931 
1932 Jumpers 1-5 of the jumper block J1 control the IRQ level. ON means
1933 shorted, OFF means open::
1934 
1935     Jumper              |  IRQ
1936     1   2   3   4   5   |
1937    ----------------------------
1938     ON  OFF OFF OFF OFF |  7
1939     OFF ON  OFF OFF OFF |  5
1940     OFF OFF ON  OFF OFF |  4
1941     OFF OFF OFF ON  OFF |  3
1942     OFF OFF OFF OFF ON  |  2
1943 
1944 
1945 Unknown jumpers & sockets
1946 ^^^^^^^^^^^^^^^^^^^^^^^^^
1947 
1948 I know nothing about these. I just guess that J16&J17 are timeout
1949 jumpers and maybe one of J18-J21 selects ROM. Also J6-J10 and
1950 J11-J15 are connecting IRQ2-7 to some pins on the UFSs. I can't
1951 guess the purpose.
1952 
1953 Datapoint?
1954 ==========
1955 
1956 LAN-ARC-8, an 8-bit card
1957 ------------------------
1958 
1959   - from Vojtech Pavlik <vojtech@suse.cz>
1960 
1961 This is another SMC 90C65-based ARCnet card. I couldn't identify the
1962 manufacturer, but it might be DataPoint, because the card has the
1963 original arcNet logo in its upper right corner.
1964 
1965 ::
1966 
1967           _______________________________________________________
1968          |                         _________                     |
1969          |                        |   SW2   | ON      arcNet     |
1970          |                        |_________| OFF             ___|
1971          |  _____________         1 ______  8                |   | 8
1972          | |             | SW1     | XTAL | ____________     | S |
1973          | > RAM (2k)    |         |______||            |    | W |
1974          | |_____________|                 |      H     |    | 3 |
1975          |                        _________|_____ y     |    |___| 1
1976          |  _________            |         |     |b     |        |
1977          | |_________|           |         |     |r     |        |
1978          |                       |     SMC |     |i     |        |
1979          |                       |    90C65|     |d     |        |
1980          |  _________            |         |     |      |        |
1981          | |   SW1   | ON        |         |     |I     |        |
1982          | |_________| OFF       |_________|_____/C     |   _____|
1983          |  1       8                      |            |  |     |___
1984          |  ______________                 |            |  | BNC |___|
1985          | |              |                |____________|  |_____|
1986          | > EPROM SOCKET |              _____________           |
1987          | |______________|             |_____________|          |
1988          |                                         ______________|
1989          |                                        |
1990          |________________________________________|
1991 
1992 Legend::
1993 
1994   90C65       ARCNET Chip
1995   SW1 1-5:    Base Memory Address Select
1996       6-8:    Base I/O Address Select
1997   SW2 1-8:    Node ID Select
1998   SW3 1-5:    IRQ Select
1999       6-7:    Extra Timeout
2000       8  :    ROM Enable
2001   BNC         Coax connector
2002   XTAL        20 MHz Crystal
2003 
2004 
2005 Setting the Node ID
2006 ^^^^^^^^^^^^^^^^^^^
2007 
2008 The eight switches in SW3 are used to set the node ID. Each node attached
2009 to the network must have an unique node ID which must not be 0.
2010 Switch 1 serves as the least significant bit (LSB).
2011 
2012 Setting one of the switches to Off means "1", On means "0".
2013 
2014 The node ID is the sum of the values of all switches set to "1"
2015 These values are::
2016 
2017    Switch | Value
2018    -------|-------
2019      1    |   1
2020      2    |   2
2021      3    |   4
2022      4    |   8
2023      5    |  16
2024      6    |  32
2025      7    |  64
2026      8    | 128
2027 
2028 
2029 Setting the I/O Base Address
2030 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2031 
2032 The last three switches in switch block SW1 are used to select one
2033 of eight possible I/O Base addresses using the following table::
2034 
2035 
2036    Switch      | Hex I/O
2037     6   7   8  | Address
2038    ------------|--------
2039    ON  ON  ON  |  260
2040    OFF ON  ON  |  290
2041    ON  OFF ON  |  2E0  (Manufacturer's default)
2042    OFF OFF ON  |  2F0
2043    ON  ON  OFF |  300
2044    OFF ON  OFF |  350
2045    ON  OFF OFF |  380
2046    OFF OFF OFF |  3E0
2047 
2048 
2049 Setting the Base Memory (RAM) buffer Address
2050 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2051 
2052 The memory buffer (RAM) requires 2K. The base of this buffer can be
2053 located in any of eight positions. The address of the Boot Prom is
2054 memory base + 0x2000.
2055 
2056 Jumpers 3-5 of switch block SW1 select the Memory Base address.
2057 
2058 ::
2059 
2060    Switch              | Hex RAM | Hex ROM
2061     1   2   3   4   5  | Address | Address *)
2062    --------------------|---------|-----------
2063    ON  ON  ON  ON  ON  |  C0000  |  C2000
2064    ON  ON  OFF ON  ON  |  C4000  |  C6000
2065    ON  ON  ON  OFF ON  |  CC000  |  CE000
2066    ON  ON  OFF OFF ON  |  D0000  |  D2000  (Manufacturer's default)
2067    ON  ON  ON  ON  OFF |  D4000  |  D6000
2068    ON  ON  OFF ON  OFF |  D8000  |  DA000
2069    ON  ON  ON  OFF OFF |  DC000  |  DE000
2070    ON  ON  OFF OFF OFF |  E0000  |  E2000
2071 
2072   *) To enable the Boot ROM set the switch 8 of switch block SW3 to position ON.
2073 
2074 The switches 1 and 2 probably add 0x0800 and 0x1000 to RAM base address.
2075 
2076 
2077 Setting the Interrupt Line
2078 ^^^^^^^^^^^^^^^^^^^^^^^^^^
2079 
2080 Switches 1-5 of the switch block SW3 control the IRQ level::
2081 
2082     Jumper              |  IRQ
2083     1   2   3   4   5   |
2084    ----------------------------
2085     ON  OFF OFF OFF OFF |  3
2086     OFF ON  OFF OFF OFF |  4
2087     OFF OFF ON  OFF OFF |  5
2088     OFF OFF OFF ON  OFF |  7
2089     OFF OFF OFF OFF ON  |  2
2090 
2091 
2092 Setting the Timeout Parameters
2093 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2094 
2095 The switches 6-7 of the switch block SW3 are used to determine the timeout
2096 parameters.  These two switches are normally left in the OFF position.
2097 
2098 
2099 Topware
2100 =======
2101 
2102 8-bit card, TA-ARC/10
2103 ---------------------
2104 
2105   - from Vojtech Pavlik <vojtech@suse.cz>
2106 
2107 This is another very similar 90C65 card. Most of the switches and jumpers
2108 are the same as on other clones.
2109 
2110 ::
2111 
2112    _____________________________________________________________________
2113   |  ___________   |                         |            ______        |
2114   | |SW2 NODE ID|  |                         |           | XTAL |       |
2115   | |___________|  |  Hybrid IC              |           |______|       |
2116   |  ___________   |                         |                        __|
2117   | |SW1 MEM+I/O|  |_________________________|                   LED1|__|)
2118   | |___________|           1 2                                         |
2119   |                     J3 |o|o| TIMEOUT                          ______|
2120   |     ______________     |o|o|                                 |      |
2121   |    |              |  ___________________                     | RJ   |
2122   |    > EPROM SOCKET | |                   \                    |------|
2123   |J2  |______________| |                    |                   |      |
2124   ||o|                  |                    |                   |______|
2125   ||o| ROM ENABLE       |        SMC         |    _________             |
2126   |     _____________   |       90C65        |   |_________|       _____|
2127   |    |             |  |                    |                    |     |___
2128   |    > RAM (2k)    |  |                    |                    | BNC |___|
2129   |    |_____________|  |                    |                    |_____|
2130   |                     |____________________|                          |
2131   | ________ IRQ 2 3 4 5 7                  ___________                 |
2132   ||________|   |o|o|o|o|o|                |___________|                |
2133   |________   J1|o|o|o|o|o|                               ______________|
2134            |                                             |
2135            |_____________________________________________|
2136 
2137 Legend::
2138 
2139   90C65       ARCNET Chip
2140   XTAL        20 MHz Crystal
2141   SW1 1-5     Base Memory Address Select
2142       6-8     Base I/O Address Select
2143   SW2 1-8     Node ID Select (ID0-ID7)
2144   J1          IRQ Select
2145   J2          ROM Enable
2146   J3          Extra Timeout
2147   LED1        Activity LED
2148   BNC         Coax connector (BUS ARCnet)
2149   RJ          Twisted Pair Connector (daisy chain)
2150 
2151 
2152 Setting the Node ID
2153 ^^^^^^^^^^^^^^^^^^^
2154 
2155 The eight switches in SW2 are used to set the node ID. Each node attached to
2156 the network must have an unique node ID which must not be 0.  Switch 1 (ID0)
2157 serves as the least significant bit (LSB).
2158 
2159 Setting one of the switches to Off means "1", On means "0".
2160 
2161 The node ID is the sum of the values of all switches set to "1"
2162 These values are::
2163 
2164    Switch | Label | Value
2165    -------|-------|-------
2166      1    | ID0   |   1
2167      2    | ID1   |   2
2168      3    | ID2   |   4
2169      4    | ID3   |   8
2170      5    | ID4   |  16
2171      6    | ID5   |  32
2172      7    | ID6   |  64
2173      8    | ID7   | 128
2174 
2175 Setting the I/O Base Address
2176 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2177 
2178 The last three switches in switch block SW1 are used to select one
2179 of eight possible I/O Base addresses using the following table::
2180 
2181 
2182    Switch      | Hex I/O
2183     6   7   8  | Address
2184    ------------|--------
2185    ON  ON  ON  |  260  (Manufacturer's default)
2186    OFF ON  ON  |  290
2187    ON  OFF ON  |  2E0
2188    OFF OFF ON  |  2F0
2189    ON  ON  OFF |  300
2190    OFF ON  OFF |  350
2191    ON  OFF OFF |  380
2192    OFF OFF OFF |  3E0
2193 
2194 
2195 Setting the Base Memory (RAM) buffer Address
2196 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2197 
2198 The memory buffer (RAM) requires 2K. The base of this buffer can be
2199 located in any of eight positions. The address of the Boot Prom is
2200 memory base + 0x2000.
2201 
2202 Jumpers 3-5 of switch block SW1 select the Memory Base address.
2203 
2204 ::
2205 
2206    Switch              | Hex RAM | Hex ROM
2207     1   2   3   4   5  | Address | Address *)
2208    --------------------|---------|-----------
2209    ON  ON  ON  ON  ON  |  C0000  |  C2000
2210    ON  ON  OFF ON  ON  |  C4000  |  C6000  (Manufacturer's default)
2211    ON  ON  ON  OFF ON  |  CC000  |  CE000
2212    ON  ON  OFF OFF ON  |  D0000  |  D2000
2213    ON  ON  ON  ON  OFF |  D4000  |  D6000
2214    ON  ON  OFF ON  OFF |  D8000  |  DA000
2215    ON  ON  ON  OFF OFF |  DC000  |  DE000
2216    ON  ON  OFF OFF OFF |  E0000  |  E2000
2217 
2218    *) To enable the Boot ROM short the jumper J2.
2219 
2220 The jumpers 1 and 2 probably add 0x0800 and 0x1000 to RAM address.
2221 
2222 
2223 Setting the Interrupt Line
2224 ^^^^^^^^^^^^^^^^^^^^^^^^^^
2225 
2226 Jumpers 1-5 of the jumper block J1 control the IRQ level.  ON means
2227 shorted, OFF means open::
2228 
2229     Jumper              |  IRQ
2230     1   2   3   4   5   |
2231    ----------------------------
2232     ON  OFF OFF OFF OFF |  2
2233     OFF ON  OFF OFF OFF |  3
2234     OFF OFF ON  OFF OFF |  4
2235     OFF OFF OFF ON  OFF |  5
2236     OFF OFF OFF OFF ON  |  7
2237 
2238 
2239 Setting the Timeout Parameters
2240 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2241 
2242 The jumpers J3 are used to set the timeout parameters. These two
2243 jumpers are normally left open.
2244 
2245 Thomas-Conrad
2246 =============
2247 
2248 Model #500-6242-0097 REV A (8-bit card)
2249 ---------------------------------------
2250 
2251   - from Lars Karlsson <100617.3473@compuserve.com>
2252 
2253 ::
2254 
2255      ________________________________________________________
2256    |          ________   ________                           |_____
2257    |         |........| |........|                            |
2258    |         |________| |________|                         ___|
2259    |            SW 3       SW 1                           |   |
2260    |         Base I/O   Base Addr.                Station |   |
2261    |                                              address |   |
2262    |    ______                                    switch  |   |
2263    |   |      |                                           |   |
2264    |   |      |                                           |___|
2265    |   |      |                                 ______        |___._
2266    |   |______|                                |______|         ____| BNC
2267    |                                            Jumper-        _____| Connector
2268    |   Main chip                                block  _    __|   '
2269    |                                                  | |  |    RJ Connector
2270    |                                                  |_|  |    with 110 Ohm
2271    |                                                       |__  Terminator
2272    |    ___________                                         __|
2273    |   |...........|                                       |    RJ-jack
2274    |   |...........|    _____                              |    (unused)
2275    |   |___________|   |_____|                             |__
2276    |  Boot PROM socket IRQ-jumpers                            |_  Diagnostic
2277    |________                                       __          _| LED (red)
2278             | | | | | | | | | | | | | | | | | | | |  |        |
2279             | | | | | | | | | | | | | | | | | | | |  |________|
2280                                                               |
2281                                                               |
2282 
2283 And here are the settings for some of the switches and jumpers on the cards.
2284 
2285 ::
2286 
2287             I/O
2288 
2289            1 2 3 4 5 6 7 8
2290 
2291   2E0----- 0 0 0 1 0 0 0 1
2292   2F0----- 0 0 0 1 0 0 0 0
2293   300----- 0 0 0 0 1 1 1 1
2294   350----- 0 0 0 0 1 1 1 0
2295 
2296 "0" in the above example means switch is off "1" means that it is on.
2297 
2298 ::
2299 
2300       ShMem address.
2301 
2302         1 2 3 4 5 6 7 8
2303 
2304   CX00--0 0 1 1 | |   |
2305   DX00--0 0 1 0       |
2306   X000--------- 1 1   |
2307   X400--------- 1 0   |
2308   X800--------- 0 1   |
2309   XC00--------- 0 0
2310   ENHANCED----------- 1
2311   COMPATIBLE--------- 0
2312 
2313 ::
2314 
2315          IRQ
2316 
2317 
2318      3 4 5 7 2
2319      . . . . .
2320      . . . . .
2321 
2322 
2323 There is a DIP-switch with 8 switches, used to set the shared memory address
2324 to be used. The first 6 switches set the address, the 7th doesn't have any
2325 function, and the 8th switch is used to select "compatible" or "enhanced".
2326 When I got my two cards, one of them had this switch set to "enhanced". That
2327 card didn't work at all, it wasn't even recognized by the driver. The other
2328 card had this switch set to "compatible" and it behaved absolutely normally. I
2329 guess that the switch on one of the cards, must have been changed accidentally
2330 when the card was taken out of its former host. The question remains
2331 unanswered, what is the purpose of the "enhanced" position?
2332 
2333 [Avery's note: "enhanced" probably either disables shared memory (use IO
2334 ports instead) or disables IO ports (use memory addresses instead).  This
2335 varies by the type of card involved.  I fail to see how either of these
2336 enhance anything.  Send me more detailed information about this mode, or
2337 just use "compatible" mode instead.]
2338 
2339 Waterloo Microsystems Inc. ??
2340 =============================
2341 
2342 8-bit card (C) 1985
2343 -------------------
2344   - from Robert Michael Best <rmb117@cs.usask.ca>
2345 
2346 [Avery's note: these don't work with my driver for some reason.  These cards
2347 SEEM to have settings similar to the PDI508Plus, which is
2348 software-configured and doesn't work with my driver either.  The "Waterloo
2349 chip" is a boot PROM, probably designed specifically for the University of
2350 Waterloo.  If you have any further information about this card, please
2351 e-mail me.]
2352 
2353 The probe has not been able to detect the card on any of the J2 settings,
2354 and I tried them again with the "Waterloo" chip removed.
2355 
2356 ::
2357 
2358    _____________________________________________________________________
2359   | \/  \/              ___  __ __                                      |
2360   | C4  C4     |^|     | M ||  ^  ||^|                                  |
2361   | --  --     |_|     | 5 ||     || | C3                               |
2362   | \/  \/      C10    |___||     ||_|                                  |
2363   | C4  C4             _  _ |     |                 ??                  |
2364   | --  --            | \/ ||     |                                     |
2365   |                   |    ||     |                                     |
2366   |                   |    ||  C1 |                                     |
2367   |                   |    ||     |  \/                            _____|
2368   |                   | C6 ||     |  C9                           |     |___
2369   |                   |    ||     |  --                           | BNC |___|
2370   |                   |    ||     |          >C7|                 |_____|
2371   |                   |    ||     |                                     |
2372   | __ __             |____||_____|       1 2 3     6                   |
2373   ||  ^  |     >C4|                      |o|o|o|o|o|o| J2    >C4|       |
2374   ||     |                               |o|o|o|o|o|o|                  |
2375   || C2  |     >C4|                                          >C4|       |
2376   ||     |                                   >C8|                       |
2377   ||     |       2 3 4 5 6 7  IRQ                            >C4|       |
2378   ||_____|      |o|o|o|o|o|o| J3                                        |
2379   |_______      |o|o|o|o|o|o|                            _______________|
2380           |                                             |
2381           |_____________________________________________|
2382 
2383   C1 -- "COM9026
2384          SMC 8638"
2385         In a chip socket.
2386 
2387   C2 -- "@Copyright
2388          Waterloo Microsystems Inc.
2389          1985"
2390         In a chip Socket with info printed on a label covering a round window
2391         showing the circuit inside. (The window indicates it is an EPROM chip.)
2392 
2393   C3 -- "COM9032
2394          SMC 8643"
2395         In a chip socket.
2396 
2397   C4 -- "74LS"
2398         9 total no sockets.
2399 
2400   M5 -- "50006-136
2401          20.000000 MHZ
2402          MTQ-T1-S3
2403          0 M-TRON 86-40"
2404         Metallic case with 4 pins, no socket.
2405 
2406   C6 -- "MOSTEK@TC8643
2407          MK6116N-20
2408          MALAYSIA"
2409         No socket.
2410 
2411   C7 -- No stamp or label but in a 20 pin chip socket.
2412 
2413   C8 -- "PAL10L8CN
2414          8623"
2415         In a 20 pin socket.
2416 
2417   C9 -- "PAl16R4A-2CN
2418          8641"
2419         In a 20 pin socket.
2420 
2421   C10 -- "M8640
2422             NMC
2423           9306N"
2424          In an 8 pin socket.
2425 
2426   ?? -- Some components on a smaller board and attached with 20 pins all
2427         along the side closest to the BNC connector.  The are coated in a dark
2428         resin.
2429 
2430 On the board there are two jumper banks labeled J2 and J3. The
2431 manufacturer didn't put a J1 on the board. The two boards I have both
2432 came with a jumper box for each bank.
2433 
2434 ::
2435 
2436   J2 -- Numbered 1 2 3 4 5 6.
2437         4 and 5 are not stamped due to solder points.
2438 
2439   J3 -- IRQ 2 3 4 5 6 7
2440 
2441 The board itself has a maple leaf stamped just above the irq jumpers
2442 and "-2 46-86" beside C2. Between C1 and C6 "ASS 'Y 300163" and "@1986
2443 CORMAN CUSTOM ELECTRONICS CORP." stamped just below the BNC connector.
2444 Below that "MADE IN CANADA"
2445 
2446 No Name
2447 =======
2448 
2449 8-bit cards, 16-bit cards
2450 -------------------------
2451 
2452   - from Juergen Seifert <seifert@htwm.de>
2453 
2454 I have named this ARCnet card "NONAME", since there is no name of any
2455 manufacturer on the Installation manual nor on the shipping box. The only
2456 hint to the existence of a manufacturer at all is written in copper,
2457 it is "Made in Taiwan"
2458 
2459 This description has been written by Juergen Seifert <seifert@htwm.de>
2460 using information from the Original
2461 
2462                     "ARCnet Installation Manual"
2463 
2464 ::
2465 
2466     ________________________________________________________________
2467    | |STAR| BUS| T/P|                                               |
2468    | |____|____|____|                                               |
2469    |                            _____________________               |
2470    |                           |                     |              |
2471    |                           |                     |              |
2472    |                           |                     |              |
2473    |                           |        SMC          |              |
2474    |                           |                     |              |
2475    |                           |       COM90C65      |              |
2476    |                           |                     |              |
2477    |                           |                     |              |
2478    |                           |__________-__________|              |
2479    |                                                           _____|
2480    |      _______________                                     |  CN |
2481    |     | PROM          |                                    |_____|
2482    |     > SOCKET        |                                          |
2483    |     |_______________|         1 2 3 4 5 6 7 8  1 2 3 4 5 6 7 8 |
2484    |                               _______________  _______________ |
2485    |           |o|o|o|o|o|o|o|o|  |      SW1      ||      SW2      ||
2486    |           |o|o|o|o|o|o|o|o|  |_______________||_______________||
2487    |___         2 3 4 5 7 E E R        Node ID       IOB__|__MEM____|
2488        |        \ IRQ   / T T O                      |
2489        |__________________1_2_M______________________|
2490 
2491 Legend::
2492 
2493   COM90C65:       ARCnet Probe
2494   S1  1-8:    Node ID Select
2495   S2  1-3:    I/O Base Address Select
2496       4-6:    Memory Base Address Select
2497       7-8:    RAM Offset Select
2498   ET1, ET2    Extended Timeout Select
2499   ROM     ROM Enable Select
2500   CN              RG62 Coax Connector
2501   STAR| BUS | T/P Three fields for placing a sign (colored circle)
2502                   indicating the topology of the card
2503 
2504 Setting one of the switches to Off means "1", On means "0".
2505 
2506 
2507 Setting the Node ID
2508 ^^^^^^^^^^^^^^^^^^^
2509 
2510 The eight switches in group SW1 are used to set the node ID.
2511 Each node attached to the network must have an unique node ID which
2512 must be different from 0.
2513 Switch 8 serves as the least significant bit (LSB).
2514 
2515 The node ID is the sum of the values of all switches set to "1"
2516 These values are::
2517 
2518     Switch | Value
2519     -------|-------
2520       8    |   1
2521       7    |   2
2522       6    |   4
2523       5    |   8
2524       4    |  16
2525       3    |  32
2526       2    |  64
2527       1    | 128
2528 
2529 Some Examples::
2530 
2531     Switch         | Hex     | Decimal
2532    1 2 3 4 5 6 7 8 | Node ID | Node ID
2533    ----------------|---------|---------
2534    0 0 0 0 0 0 0 0 |    not allowed
2535    0 0 0 0 0 0 0 1 |    1    |    1
2536    0 0 0 0 0 0 1 0 |    2    |    2
2537    0 0 0 0 0 0 1 1 |    3    |    3
2538        . . .       |         |
2539    0 1 0 1 0 1 0 1 |   55    |   85
2540        . . .       |         |
2541    1 0 1 0 1 0 1 0 |   AA    |  170
2542        . . .       |         |
2543    1 1 1 1 1 1 0 1 |   FD    |  253
2544    1 1 1 1 1 1 1 0 |   FE    |  254
2545    1 1 1 1 1 1 1 1 |   FF    |  255
2546 
2547 
2548 Setting the I/O Base Address
2549 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2550 
2551 The first three switches in switch group SW2 are used to select one
2552 of eight possible I/O Base addresses using the following table::
2553 
2554    Switch      | Hex I/O
2555     1   2   3  | Address
2556    ------------|--------
2557    ON  ON  ON  |  260
2558    ON  ON  OFF |  290
2559    ON  OFF ON  |  2E0  (Manufacturer's default)
2560    ON  OFF OFF |  2F0
2561    OFF ON  ON  |  300
2562    OFF ON  OFF |  350
2563    OFF OFF ON  |  380
2564    OFF OFF OFF |  3E0
2565 
2566 
2567 Setting the Base Memory (RAM) buffer Address
2568 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2569 
2570 The memory buffer requires 2K of a 16K block of RAM. The base of this
2571 16K block can be located in any of eight positions.
2572 Switches 4-6 of switch group SW2 select the Base of the 16K block.
2573 Within that 16K address space, the buffer may be assigned any one of four
2574 positions, determined by the offset, switches 7 and 8 of group SW2.
2575 
2576 ::
2577 
2578    Switch     | Hex RAM | Hex ROM
2579    4 5 6  7 8 | Address | Address *)
2580    -----------|---------|-----------
2581    0 0 0  0 0 |  C0000  |  C2000
2582    0 0 0  0 1 |  C0800  |  C2000
2583    0 0 0  1 0 |  C1000  |  C2000
2584    0 0 0  1 1 |  C1800  |  C2000
2585               |         |
2586    0 0 1  0 0 |  C4000  |  C6000
2587    0 0 1  0 1 |  C4800  |  C6000
2588    0 0 1  1 0 |  C5000  |  C6000
2589    0 0 1  1 1 |  C5800  |  C6000
2590               |         |
2591    0 1 0  0 0 |  CC000  |  CE000
2592    0 1 0  0 1 |  CC800  |  CE000
2593    0 1 0  1 0 |  CD000  |  CE000
2594    0 1 0  1 1 |  CD800  |  CE000
2595               |         |
2596    0 1 1  0 0 |  D0000  |  D2000  (Manufacturer's default)
2597    0 1 1  0 1 |  D0800  |  D2000
2598    0 1 1  1 0 |  D1000  |  D2000
2599    0 1 1  1 1 |  D1800  |  D2000
2600               |         |
2601    1 0 0  0 0 |  D4000  |  D6000
2602    1 0 0  0 1 |  D4800  |  D6000
2603    1 0 0  1 0 |  D5000  |  D6000
2604    1 0 0  1 1 |  D5800  |  D6000
2605               |         |
2606    1 0 1  0 0 |  D8000  |  DA000
2607    1 0 1  0 1 |  D8800  |  DA000
2608    1 0 1  1 0 |  D9000  |  DA000
2609    1 0 1  1 1 |  D9800  |  DA000
2610               |         |
2611    1 1 0  0 0 |  DC000  |  DE000
2612    1 1 0  0 1 |  DC800  |  DE000
2613    1 1 0  1 0 |  DD000  |  DE000
2614    1 1 0  1 1 |  DD800  |  DE000
2615               |         |
2616    1 1 1  0 0 |  E0000  |  E2000
2617    1 1 1  0 1 |  E0800  |  E2000
2618    1 1 1  1 0 |  E1000  |  E2000
2619    1 1 1  1 1 |  E1800  |  E2000
2620 
2621    *) To enable the 8K Boot PROM install the jumper ROM.
2622       The default is jumper ROM not installed.
2623 
2624 
2625 Setting Interrupt Request Lines (IRQ)
2626 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2627 
2628 To select a hardware interrupt level set one (only one!) of the jumpers
2629 IRQ2, IRQ3, IRQ4, IRQ5 or IRQ7. The manufacturer's default is IRQ2.
2630 
2631 
2632 Setting the Timeouts
2633 ^^^^^^^^^^^^^^^^^^^^
2634 
2635 The two jumpers labeled ET1 and ET2 are used to determine the timeout
2636 parameters (response and reconfiguration time). Every node in a network
2637 must be set to the same timeout values.
2638 
2639 ::
2640 
2641    ET1 ET2 | Response Time (us) | Reconfiguration Time (ms)
2642    --------|--------------------|--------------------------
2643    Off Off |        78          |          840   (Default)
2644    Off On  |       285          |         1680
2645    On  Off |       563          |         1680
2646    On  On  |      1130          |         1680
2647 
2648 On means jumper installed, Off means jumper not installed
2649 
2650 
2651 16-BIT ARCNET
2652 -------------
2653 
2654 The manual of my 8-Bit NONAME ARCnet Card contains another description
2655 of a 16-Bit Coax / Twisted Pair Card. This description is incomplete,
2656 because there are missing two pages in the manual booklet. (The table
2657 of contents reports pages ... 2-9, 2-11, 2-12, 3-1, ... but inside
2658 the booklet there is a different way of counting ... 2-9, 2-10, A-1,
2659 (empty page), 3-1, ..., 3-18, A-1 (again), A-2)
2660 Also the picture of the board layout is not as good as the picture of
2661 8-Bit card, because there isn't any letter like "SW1" written to the
2662 picture.
2663 
2664 Should somebody have such a board, please feel free to complete this
2665 description or to send a mail to me!
2666 
2667 This description has been written by Juergen Seifert <seifert@htwm.de>
2668 using information from the Original
2669 
2670                     "ARCnet Installation Manual"
2671 
2672 ::
2673 
2674    ___________________________________________________________________
2675   <                    _________________  _________________           |
2676   >                   |       SW?       ||      SW?        |          |
2677   <                   |_________________||_________________|          |
2678   >                       ____________________                        |
2679   <                      |                    |                       |
2680   >                      |                    |                       |
2681   <                      |                    |                       |
2682   >                      |                    |                       |
2683   <                      |                    |                       |
2684   >                      |                    |                       |
2685   <                      |                    |                       |
2686   >                      |____________________|                       |
2687   <                                                               ____|
2688   >                       ____________________                   |    |
2689   <                      |                    |                  | J1 |
2690   >                      |                    <                  |    |
2691   <                      |____________________|  ? ? ? ? ? ?     |____|
2692   >                                             |o|o|o|o|o|o|         |
2693   <                                             |o|o|o|o|o|o|         |
2694   >                                                                   |
2695   <             __                                         ___________|
2696   >            |  |                                       |
2697   <____________|  |_______________________________________|
2698 
2699 
2700 Setting one of the switches to Off means "1", On means "0".
2701 
2702 
2703 Setting the Node ID
2704 ^^^^^^^^^^^^^^^^^^^
2705 
2706 The eight switches in group SW2 are used to set the node ID.
2707 Each node attached to the network must have an unique node ID which
2708 must be different from 0.
2709 Switch 8 serves as the least significant bit (LSB).
2710 
2711 The node ID is the sum of the values of all switches set to "1"
2712 These values are::
2713 
2714     Switch | Value
2715     -------|-------
2716       8    |   1
2717       7    |   2
2718       6    |   4
2719       5    |   8
2720       4    |  16
2721       3    |  32
2722       2    |  64
2723       1    | 128
2724 
2725 Some Examples::
2726 
2727     Switch         | Hex     | Decimal
2728    1 2 3 4 5 6 7 8 | Node ID | Node ID
2729    ----------------|---------|---------
2730    0 0 0 0 0 0 0 0 |    not allowed
2731    0 0 0 0 0 0 0 1 |    1    |    1
2732    0 0 0 0 0 0 1 0 |    2    |    2
2733    0 0 0 0 0 0 1 1 |    3    |    3
2734        . . .       |         |
2735    0 1 0 1 0 1 0 1 |   55    |   85
2736        . . .       |         |
2737    1 0 1 0 1 0 1 0 |   AA    |  170
2738        . . .       |         |
2739    1 1 1 1 1 1 0 1 |   FD    |  253
2740    1 1 1 1 1 1 1 0 |   FE    |  254
2741    1 1 1 1 1 1 1 1 |   FF    |  255
2742 
2743 
2744 Setting the I/O Base Address
2745 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2746 
2747 The first three switches in switch group SW1 are used to select one
2748 of eight possible I/O Base addresses using the following table::
2749 
2750    Switch      | Hex I/O
2751     3   2   1  | Address
2752    ------------|--------
2753    ON  ON  ON  |  260
2754    ON  ON  OFF |  290
2755    ON  OFF ON  |  2E0  (Manufacturer's default)
2756    ON  OFF OFF |  2F0
2757    OFF ON  ON  |  300
2758    OFF ON  OFF |  350
2759    OFF OFF ON  |  380
2760    OFF OFF OFF |  3E0
2761 
2762 
2763 Setting the Base Memory (RAM) buffer Address
2764 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2765 
2766 The memory buffer requires 2K of a 16K block of RAM. The base of this
2767 16K block can be located in any of eight positions.
2768 Switches 6-8 of switch group SW1 select the Base of the 16K block.
2769 Within that 16K address space, the buffer may be assigned any one of four
2770 positions, determined by the offset, switches 4 and 5 of group SW1::
2771 
2772    Switch     | Hex RAM | Hex ROM
2773    8 7 6  5 4 | Address | Address
2774    -----------|---------|-----------
2775    0 0 0  0 0 |  C0000  |  C2000
2776    0 0 0  0 1 |  C0800  |  C2000
2777    0 0 0  1 0 |  C1000  |  C2000
2778    0 0 0  1 1 |  C1800  |  C2000
2779               |         |
2780    0 0 1  0 0 |  C4000  |  C6000
2781    0 0 1  0 1 |  C4800  |  C6000
2782    0 0 1  1 0 |  C5000  |  C6000
2783    0 0 1  1 1 |  C5800  |  C6000
2784               |         |
2785    0 1 0  0 0 |  CC000  |  CE000
2786    0 1 0  0 1 |  CC800  |  CE000
2787    0 1 0  1 0 |  CD000  |  CE000
2788    0 1 0  1 1 |  CD800  |  CE000
2789               |         |
2790    0 1 1  0 0 |  D0000  |  D2000  (Manufacturer's default)
2791    0 1 1  0 1 |  D0800  |  D2000
2792    0 1 1  1 0 |  D1000  |  D2000
2793    0 1 1  1 1 |  D1800  |  D2000
2794               |         |
2795    1 0 0  0 0 |  D4000  |  D6000
2796    1 0 0  0 1 |  D4800  |  D6000
2797    1 0 0  1 0 |  D5000  |  D6000
2798    1 0 0  1 1 |  D5800  |  D6000
2799               |         |
2800    1 0 1  0 0 |  D8000  |  DA000
2801    1 0 1  0 1 |  D8800  |  DA000
2802    1 0 1  1 0 |  D9000  |  DA000
2803    1 0 1  1 1 |  D9800  |  DA000
2804               |         |
2805    1 1 0  0 0 |  DC000  |  DE000
2806    1 1 0  0 1 |  DC800  |  DE000
2807    1 1 0  1 0 |  DD000  |  DE000
2808    1 1 0  1 1 |  DD800  |  DE000
2809               |         |
2810    1 1 1  0 0 |  E0000  |  E2000
2811    1 1 1  0 1 |  E0800  |  E2000
2812    1 1 1  1 0 |  E1000  |  E2000
2813    1 1 1  1 1 |  E1800  |  E2000
2814 
2815 
2816 Setting Interrupt Request Lines (IRQ)
2817 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2818 
2819 ??????????????????????????????????????
2820 
2821 
2822 Setting the Timeouts
2823 ^^^^^^^^^^^^^^^^^^^^
2824 
2825 ??????????????????????????????????????
2826 
2827 
2828 8-bit cards ("Made in Taiwan R.O.C.")
2829 -------------------------------------
2830 
2831   - from Vojtech Pavlik <vojtech@suse.cz>
2832 
2833 I have named this ARCnet card "NONAME", since I got only the card with
2834 no manual at all and the only text identifying the manufacturer is
2835 "MADE IN TAIWAN R.O.C" printed on the card.
2836 
2837 ::
2838 
2839           ____________________________________________________________
2840          |                 1 2 3 4 5 6 7 8                            |
2841          | |o|o| JP1       o|o|o|o|o|o|o|o| ON                        |
2842          |  +              o|o|o|o|o|o|o|o|                        ___|
2843          |  _____________  o|o|o|o|o|o|o|o| OFF         _____     |   | ID7
2844          | |             | SW1                         |     |    |   | ID6
2845          | > RAM (2k)    |        ____________________ |  H  |    | S | ID5
2846          | |_____________|       |                    ||  y  |    | W | ID4
2847          |                       |                    ||  b  |    | 2 | ID3
2848          |                       |                    ||  r  |    |   | ID2
2849          |                       |                    ||  i  |    |   | ID1
2850          |                       |       90C65        ||  d  |    |___| ID0
2851          |      SW3              |                    ||     |        |
2852          | |o|o|o|o|o|o|o|o| ON  |                    ||  I  |        |
2853          | |o|o|o|o|o|o|o|o|     |                    ||  C  |        |
2854          | |o|o|o|o|o|o|o|o| OFF |____________________||     |   _____|
2855          |  1 2 3 4 5 6 7 8                            |     |  |     |___
2856          |  ______________                             |     |  | BNC |___|
2857          | |              |                            |_____|  |_____|
2858          | > EPROM SOCKET |                                           |
2859          | |______________|                                           |
2860          |                                              ______________|
2861          |                                             |
2862          |_____________________________________________|
2863 
2864 Legend::
2865 
2866   90C65       ARCNET Chip
2867   SW1 1-5:    Base Memory Address Select
2868       6-8:    Base I/O Address Select
2869   SW2 1-8:    Node ID Select (ID0-ID7)
2870   SW3 1-5:    IRQ Select
2871       6-7:    Extra Timeout
2872       8  :    ROM Enable
2873   JP1         Led connector
2874   BNC         Coax connector
2875 
2876 Although the jumpers SW1 and SW3 are marked SW, not JP, they are jumpers, not
2877 switches.
2878 
2879 Setting the jumpers to ON means connecting the upper two pins, off the bottom
2880 two - or - in case of IRQ setting, connecting none of them at all.
2881 
2882 Setting the Node ID
2883 ^^^^^^^^^^^^^^^^^^^
2884 
2885 The eight switches in SW2 are used to set the node ID. Each node attached
2886 to the network must have an unique node ID which must not be 0.
2887 Switch 1 (ID0) serves as the least significant bit (LSB).
2888 
2889 Setting one of the switches to Off means "1", On means "0".
2890 
2891 The node ID is the sum of the values of all switches set to "1"
2892 These values are::
2893 
2894    Switch | Label | Value
2895    -------|-------|-------
2896      1    | ID0   |   1
2897      2    | ID1   |   2
2898      3    | ID2   |   4
2899      4    | ID3   |   8
2900      5    | ID4   |  16
2901      6    | ID5   |  32
2902      7    | ID6   |  64
2903      8    | ID7   | 128
2904 
2905 Some Examples::
2906 
2907     Switch         | Hex     | Decimal
2908    8 7 6 5 4 3 2 1 | Node ID | Node ID
2909    ----------------|---------|---------
2910    0 0 0 0 0 0 0 0 |    not allowed
2911    0 0 0 0 0 0 0 1 |    1    |    1
2912    0 0 0 0 0 0 1 0 |    2    |    2
2913    0 0 0 0 0 0 1 1 |    3    |    3
2914        . . .       |         |
2915    0 1 0 1 0 1 0 1 |   55    |   85
2916        . . .       |         |
2917    1 0 1 0 1 0 1 0 |   AA    |  170
2918        . . .       |         |
2919    1 1 1 1 1 1 0 1 |   FD    |  253
2920    1 1 1 1 1 1 1 0 |   FE    |  254
2921    1 1 1 1 1 1 1 1 |   FF    |  255
2922 
2923 
2924 Setting the I/O Base Address
2925 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2926 
2927 The last three switches in switch block SW1 are used to select one
2928 of eight possible I/O Base addresses using the following table::
2929 
2930 
2931    Switch      | Hex I/O
2932     6   7   8  | Address
2933    ------------|--------
2934    ON  ON  ON  |  260
2935    OFF ON  ON  |  290
2936    ON  OFF ON  |  2E0  (Manufacturer's default)
2937    OFF OFF ON  |  2F0
2938    ON  ON  OFF |  300
2939    OFF ON  OFF |  350
2940    ON  OFF OFF |  380
2941    OFF OFF OFF |  3E0
2942 
2943 
2944 Setting the Base Memory (RAM) buffer Address
2945 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2946 
2947 The memory buffer (RAM) requires 2K. The base of this buffer can be
2948 located in any of eight positions. The address of the Boot Prom is
2949 memory base + 0x2000.
2950 
2951 Jumpers 3-5 of jumper block SW1 select the Memory Base address.
2952 
2953 ::
2954 
2955    Switch              | Hex RAM | Hex ROM
2956     1   2   3   4   5  | Address | Address *)
2957    --------------------|---------|-----------
2958    ON  ON  ON  ON  ON  |  C0000  |  C2000
2959    ON  ON  OFF ON  ON  |  C4000  |  C6000
2960    ON  ON  ON  OFF ON  |  CC000  |  CE000
2961    ON  ON  OFF OFF ON  |  D0000  |  D2000  (Manufacturer's default)
2962    ON  ON  ON  ON  OFF |  D4000  |  D6000
2963    ON  ON  OFF ON  OFF |  D8000  |  DA000
2964    ON  ON  ON  OFF OFF |  DC000  |  DE000
2965    ON  ON  OFF OFF OFF |  E0000  |  E2000
2966 
2967   *) To enable the Boot ROM set the jumper 8 of jumper block SW3 to position ON.
2968 
2969 The jumpers 1 and 2 probably add 0x0800, 0x1000 and 0x1800 to RAM adders.
2970 
2971 Setting the Interrupt Line
2972 ^^^^^^^^^^^^^^^^^^^^^^^^^^
2973 
2974 Jumpers 1-5 of the jumper block SW3 control the IRQ level::
2975 
2976     Jumper              |  IRQ
2977     1   2   3   4   5   |
2978    ----------------------------
2979     ON  OFF OFF OFF OFF |  2
2980     OFF ON  OFF OFF OFF |  3
2981     OFF OFF ON  OFF OFF |  4
2982     OFF OFF OFF ON  OFF |  5
2983     OFF OFF OFF OFF ON  |  7
2984 
2985 
2986 Setting the Timeout Parameters
2987 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2988 
2989 The jumpers 6-7 of the jumper block SW3 are used to determine the timeout
2990 parameters. These two jumpers are normally left in the OFF position.
2991 
2992 
2993 
2994 (Generic Model 9058)
2995 --------------------
2996   - from Andrew J. Kroll <ag784@freenet.buffalo.edu>
2997   - Sorry this sat in my to-do box for so long, Andrew! (yikes - over a
2998     year!)
2999 
3000 ::
3001 
3002                                                                       _____
3003                                                                      |    <
3004                                                                      | .---'
3005     ________________________________________________________________ | |
3006    |                           |     SW2     |                      |  |
3007    |   ___________             |_____________|                      |  |
3008    |  |           |              1 2 3 4 5 6                     ___|  |
3009    |  >  6116 RAM |         _________                         8 |   |  |
3010    |  |___________|        |20MHzXtal|                        7 |   |  |
3011    |                       |_________|       __________       6 | S |  |
3012    |    74LS373                             |          |-     5 | W |  |
3013    |   _________                            |      E   |-     4 |   |  |
3014    |   >_______|              ______________|..... P   |-     3 | 3 |  |
3015    |                         |              |    : O   |-     2 |   |  |
3016    |                         |              |    : X   |-     1 |___|  |
3017    |   ________________      |              |    : Y   |-           |  |
3018    |  |      SW1       |     |      SL90C65 |    :     |-           |  |
3019    |  |________________|     |              |    : B   |-           |  |
3020    |    1 2 3 4 5 6 7 8      |              |    : O   |-           |  |
3021    |                         |_________o____|..../ A   |-    _______|  |
3022    |    ____________________                |      R   |-   |       |------,
3023    |   |                    |               |      D   |-   |  BNC  |   #  |
3024    |   > 2764 PROM SOCKET   |               |__________|-   |_______|------'
3025    |   |____________________|              _________                |  |
3026    |                                       >________| <- 74LS245    |  |
3027    |                                                                |  |
3028    |___                                               ______________|  |
3029        |H H H H H H H H H H H H H H H H H H H H H H H|               | |
3030        |U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U_U|               | |
3031                                                                       \|
3032 
3033 Legend::
3034 
3035   SL90C65       ARCNET Controller / Transceiver /Logic
3036   SW1   1-5:    IRQ Select
3037           6:    ET1
3038           7:    ET2
3039           8:    ROM ENABLE
3040   SW2   1-3:    Memory Buffer/PROM Address
3041         3-6:    I/O Address Map
3042   SW3   1-8:    Node ID Select
3043   BNC           BNC RG62/U Connection
3044                 *I* have had success using RG59B/U with *NO* terminators!
3045                 What gives?!
3046 
3047 SW1: Timeouts, Interrupt and ROM
3048 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
3049 
3050 To select a hardware interrupt level set one (only one!) of the dip switches
3051 up (on) SW1...(switches 1-5)
3052 IRQ3, IRQ4, IRQ5, IRQ7, IRQ2. The Manufacturer's default is IRQ2.
3053 
3054 The switches on SW1 labeled EXT1 (switch 6) and EXT2 (switch 7)
3055 are used to determine the timeout parameters. These two dip switches
3056 are normally left off (down).
3057 
3058    To enable the 8K Boot PROM position SW1 switch 8 on (UP) labeled ROM.
3059    The default is jumper ROM not installed.
3060 
3061 
3062 Setting the I/O Base Address
3063 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
3064 
3065 The last three switches in switch group SW2 are used to select one
3066 of eight possible I/O Base addresses using the following table::
3067 
3068 
3069    Switch | Hex I/O
3070    4 5 6  | Address
3071    -------|--------
3072    0 0 0  |  260
3073    0 0 1  |  290
3074    0 1 0  |  2E0  (Manufacturer's default)
3075    0 1 1  |  2F0
3076    1 0 0  |  300
3077    1 0 1  |  350
3078    1 1 0  |  380
3079    1 1 1  |  3E0
3080 
3081 
3082 Setting the Base Memory Address (RAM & ROM)
3083 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
3084 
3085 The memory buffer requires 2K of a 16K block of RAM. The base of this
3086 16K block can be located in any of eight positions.
3087 Switches 1-3 of switch group SW2 select the Base of the 16K block.
3088 (0 = DOWN, 1 = UP)
3089 I could, however, only verify two settings...
3090 
3091 
3092 ::
3093 
3094    Switch| Hex RAM | Hex ROM
3095    1 2 3 | Address | Address
3096    ------|---------|-----------
3097    0 0 0 |  E0000  |  E2000
3098    0 0 1 |  D0000  |  D2000  (Manufacturer's default)
3099    0 1 0 |  ?????  |  ?????
3100    0 1 1 |  ?????  |  ?????
3101    1 0 0 |  ?????  |  ?????
3102    1 0 1 |  ?????  |  ?????
3103    1 1 0 |  ?????  |  ?????
3104    1 1 1 |  ?????  |  ?????
3105 
3106 
3107 Setting the Node ID
3108 ^^^^^^^^^^^^^^^^^^^
3109 
3110 The eight switches in group SW3 are used to set the node ID.
3111 Each node attached to the network must have an unique node ID which
3112 must be different from 0.
3113 Switch 1 serves as the least significant bit (LSB).
3114 switches in the DOWN position are OFF (0) and in the UP position are ON (1)
3115 
3116 The node ID is the sum of the values of all switches set to "1"
3117 These values are::
3118 
3119     Switch | Value
3120     -------|-------
3121       1    |   1
3122       2    |   2
3123       3    |   4
3124       4    |   8
3125       5    |  16
3126       6    |  32
3127       7    |  64
3128       8    | 128
3129 
3130 Some Examples::
3131 
3132       Switch#     |   Hex   | Decimal
3133   8 7 6 5 4 3 2 1 | Node ID | Node ID
3134   ----------------|---------|---------
3135   0 0 0 0 0 0 0 0 |    not allowed  <-.
3136   0 0 0 0 0 0 0 1 |    1    |    1    |
3137   0 0 0 0 0 0 1 0 |    2    |    2    |
3138   0 0 0 0 0 0 1 1 |    3    |    3    |
3139       . . .       |         |         |
3140   0 1 0 1 0 1 0 1 |   55    |   85    |
3141       . . .       |         |         + Don't use 0 or 255!
3142   1 0 1 0 1 0 1 0 |   AA    |  170    |
3143       . . .       |         |         |
3144   1 1 1 1 1 1 0 1 |   FD    |  253    |
3145   1 1 1 1 1 1 1 0 |   FE    |  254    |
3146   1 1 1 1 1 1 1 1 |   FF    |  255  <-'
3147 
3148 
3149 Tiara
3150 =====
3151 
3152 (model unknown)
3153 ---------------
3154 
3155   - from Christoph Lameter <christoph@lameter.com>
3156 
3157 
3158 Here is information about my card as far as I could figure it out::
3159 
3160 
3161   ----------------------------------------------- tiara
3162   Tiara LanCard of Tiara Computer Systems.
3163 
3164   +----------------------------------------------+
3165   !           ! Transmitter Unit !               !
3166   !           +------------------+             -------
3167   !          MEM                              Coax Connector
3168   !  ROM    7654321 <- I/O                     -------
3169   !  :  :   +--------+                           !
3170   !  :  :   ! 90C66LJ!                         +++
3171   !  :  :   !        !                         !D  Switch to set
3172   !  :  :   !        !                         !I  the Nodenumber
3173   !  :  :   +--------+                         !P
3174   !                                            !++
3175   !         234567 <- IRQ                      !
3176   +------------!!!!!!!!!!!!!!!!!!!!!!!!--------+
3177                !!!!!!!!!!!!!!!!!!!!!!!!
3178 
3179 - 0 = Jumper Installed
3180 - 1 = Open
3181 
3182 Top Jumper line Bit 7 = ROM Enable 654=Memory location 321=I/O
3183 
3184 Settings for Memory Location (Top Jumper Line)
3185 
3186 ===     ================
3187 456     Address selected
3188 ===     ================
3189 000     C0000
3190 001     C4000
3191 010     CC000
3192 011     D0000
3193 100     D4000
3194 101     D8000
3195 110     DC000
3196 111     E0000
3197 ===     ================
3198 
3199 Settings for I/O Address (Top Jumper Line)
3200 
3201 ===     ====
3202 123     Port
3203 ===     ====
3204 000     260
3205 001     290
3206 010     2E0
3207 011     2F0
3208 100     300
3209 101     350
3210 110     380
3211 111     3E0
3212 ===     ====
3213 
3214 Settings for IRQ Selection (Lower Jumper Line)
3215 
3216 ====== =====
3217 234567
3218 ====== =====
3219 011111 IRQ 2
3220 101111 IRQ 3
3221 110111 IRQ 4
3222 111011 IRQ 5
3223 111110 IRQ 7
3224 ====== =====
3225 
3226 Other Cards
3227 ===========
3228 
3229 I have no information on other models of ARCnet cards at the moment.  Please
3230 send any and all info to:
3231 
3232         apenwarr@worldvisions.ca
3233 
3234 Thanks.

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

sflogo.php