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- || .==' \_|-_ `===. .===' _|_ `===. .===' _-|/ `== \/ | ||
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- ==' _-' I P X N E T W O R K F A Q \/ `==
- \ _-' `-_ /
- `'' ``'
- Release v1.00 - Jun 08, 1994 EST
- Written by: Josh Jackson (joshjackson@delphi.com)
- "DOOM: Where hackers gnaw the bones left from the banquet
- of data prepared by the mighty wizards of id."
- - The Unofficial DOOM Specs v1.3 -
- "The poets talk about love, but what I talk about is DOOM,
- because in the end, DOOM is all that counts."
- - Alex Machine/George Stark/Stephen King, _The Dark Half_
- -----------------------------------------------------------------------------
-
- ----------------
- ACKNOWLEDGEMENTS
- ----------------
-
- Thanks Id for such a KICK ASS game!! DOOM is a registered trademark of Id
- Software.
- Hank Leukart for the "OFFICIAL" DOOM FAQ. (And the cool header!)
- Matt Fell for the Unofficial DOOM Specs v1.3
-
- References are made to the following programs, here is a list of the authors:
-
- DEU 5.21 : Raphael Quintet,
- Brendon J Wyber
- DUE 5.21 GCC port: Per Allansson,
- Per Kofod
- IDBSP10 : Ron Rossbach
- BSP11X, BSP11TC : Collin Reed
- BSP11W : Collin Reed, Alex Korobka
- VNB1050 : Robert Fenske, Jr.
- DOOM, IPXSETUP : The Mighty Wizards of ID
-
- --------
- CONTENTS
- --------
-
- =SECTION ONE= Introduction
- [1-1] What is an IPX NETWORK?
- [1-2] Distribution of this FAQ
- [1-3] Disclaimer
-
- =SECTION TWO= Setting up an IPX NETWORK for DOOM
- [2-1] Required Hardware
- [2-1-1] The LAN cards
- [2-1-2] The interconnecting cables/T's/Terminators
- [2-2] Required Software
- [2-3] Purchasing your equipment
- [2-4] Connecting the computers
-
- =SECTION THREE= Playing the game
- [3-1] IPXSETUP.EXE
- [3-2] Trouble Shooting
- [3-3] Speeding up your game play (Notes for level builders)
- [3-4] Recommended add on software
- [3-4-1] IPXFER
- [3-4-2] DFE
- [3-4-3] IPXSETUP 1.1
-
- ------------------------------------------------------------------------------
- SECTION *1*: Introduction
- ------------------------------------------------------------------------------
-
- [1-1]: What is an IPX NETWORK?
-
- The term IPX (Internetwork Packet Exchange protocol) simply represents
- an industry standard, developed by XEROX, for communicating between computers
- in a Local Area Network (LAN), Mainframe, or the two computers that you have
- sitting around your house.
-
- In order to implement this you will need all of the required hardware
- (detailed later), software, and the know how. Hopefully this FAQ will detail
- most of this information so that you can be up and running in 2, 3, or 4
- player games soon.
-
- [1-2]: Distribution of the FAQ
-
- This FAQ is intended for anyone and everyone that wants more information
- or is having trouble setting up an IPX based network for DOOM. I would
- appreciate it if no modified copies of the FAQ other those I release in the
- future be distributed in any form.
-
- NOTE: If you feel any of the information in this FAQ to be incorrect please
- send me EMAIL or contact me in person to let me know. I will make a prompt
- adjustment and re-release it.
-
- [1-3]: DISCLAIMER
-
- The author accepts no responsibility for any damage whether it be hardware,
- software, or mental caused by the use of the information contained in this
- FAQ. All the information presented here is, to the best of my knowledge,
- technically correct.
-
- NOTE: I am not a certified network technician. All of the information in
- this FAQ was obtained through personal experience. I have been working
- with IPX based networks (mostly Novell) for the last five years and
- have become quite familiar with both their inner and outer workings.
- Therefor I do not claim that all of the information contained in this
- document to be free of error, but it is working for me, so I hope it
- works for you!
-
- ------------------------------------------------------------------------------
- SECTION *2*: Setting up an IPX Network for DOOM
- ------------------------------------------------------------------------------
-
- [2-1] Required Hardware
-
- Contrary to popular belief, you do NOT need a full blown LAN to operate
- IPX network DOOM. Since you simply need the LAN cards and you IPX drivers,
- you can set up a network for DOOM for around $10,000 less than a server
- based local area network.
-
- [2-1-1] The LAN cards
-
- The first piece of equipment you will need to set up you DOOM network
- is a set of LAN cards. Whether they be Ethernet, ARCNET, or some other
- off the wall type, they just need to be able to talk to one another. My
- personal system is set up an a series of NE2000 compatible Ethernet cards.
- Most all of my discussion will be based around NE2000 compatibles, since I
- have had no trouble whatsoever with these cards. (Plus they are very fast
- and inexpensive). When purchasing your LAN cards, it is recommended that
- you purchase cards that support CO-AX cable hookups. CO-AX is cheaper,
- easier to obtain and a better medium for network communications than
- twisted pair.
-
- [2-1-2] The interconnecting cables/T's/Terminators
-
- Next is your cable hookups. The cable that I am using is standard
- RG-58 CO-AX cable. This cable is inexpensive and VERY easy to obtain.
- In order to hook your cables to the LAN cards, you will NEED a set of
- BNC style T connectors.
-
- >>>NOTICE<<<
- YOU CAN NOT HOOK TWO CARDS DIRECTLY TOGETHER WITH THE CABLES AND
- HAVE IT WORK!!! YOU WILL NEED A SET OF Ts AND TERMINATORS. THE
- TERMINATORS ARE EXPLAINED IN THE NEXT PARAGRAPH.
-
- Finally, you will need a set of 50ohm terminators. These terminators
- are crucial to your network's operation. If you are not sure what I
- mean by terminators, I will include a description of them and how to
- build your own in the next section. Whether you are connecting 2, 3,
- or 4 computers, you will need exactly 2 terminators.
-
- [2-2] Purchasing your equipment
-
- Purchasing all of this equipment is not as tricky or as expensive as you
- might think. The LAN cards can be obtained either through me, the Computer
- Shopper, or at most Computer shows. The rest of the equipment is available
- at your local Radio Shack store.
-
- If you would like to order LAN cards, you may do so through me (Jackson
- Software) by contacting me at the following:
-
- internet: joshjackson@delphi.com
- Snail : Joshua Jackson
- Jackson Software
- 10506 Bayard Rd.
- Minerva, OH 44657
- Phone : (216) 868-1169
-
- For those of you wishing to setup a DOOM network, I am currently offering
- you a deal that you won't find anywhere else; I am selling NE2000 compat.
- Ethernet cards to anyone who wants them at my cost (wholesale) plus
- shipping charges. Both software and hardware configured cards are
- available starting at around $40.
-
- The cabling and all of its accessories can be obtained pre-made through
- me, or if you are a do-it-yourselfer, at you local Radio Shack.
-
- If your cards do not already come with a BNC T connector on the back, the
- Radio Shack Part# and current price is:
-
- 278-112 BNC T-Adapter $3.19 ea
- (You will need one per network card)
-
- Next is the terminators. The parts to make one of these from radio shack
- are the following:
-
- 278-251 BNC male to F female $1.99 ea
- (One per terminator - you will need two of them)
- (BTW: F style is the same as used for cable TV connectors)
-
- 271-1311 5pack of 100ohm Resistors $.49 ea
- (You will need two resistors per terminator and two terminators per
- network)
-
- Building the Terminator:
-
- Take two 100 ohm resistors and twist the end leads together so that
- the resistors are in parallel (this will give you 50ohms)
-
- here is a poor rendition of a text diagram
-
- -----------[100]------------
- leads `twist, `twist, leads
- -----------[100]------------
-
- once you have your 50 ohm resistor, you will need to insert one of the
- twisted ends into the small hole on the F style end of the BNC to F
- style adapter. The other end you will simply wrap around the threaded
- outer casing of the adapter. To secure the resistors in place, you can
- use tape, but I recommend either heat shrink tubing (Radio Shack Part
- Number: 278-1627) or better yet Liquid Plastic (available at most
- hardware stores).
-
- Your terminator is now complete, on to the cables. As mentioned
- earlier, the cable you will need is standard RG-58 cable. The Radio
- Shack part number and price are:
-
- 278-1314 RG-58 Co-AX $.20 per foot.
-
- The ends for the cables are:
-
- 278-103 $2.99 ea.
- (You will need two per cable)
-
- Building your cables:
-
- first, I recommend that you either get some practice stripping CO-AX
- or you buy yourself a set of CO-AX strippers. This is not the
- easiest thing in the world to do!
-
- 1. Cut the cables to the desired length (Plus a couple of inches if
- you have never attempted to strip CO-AX before)
- 2. Strip the CO-AX to the below specifications:
-
- _________
- _________}}}=------
- | | | |
- | | | `---> Inner solid copper wire 9/16"
- | | `------> Dielectric (White plastic) 1/32"
- | `--------> Shielding (Braided wire) 1/18" - 3/16"
- `--------------> Outer casing
-
- 3. Twist the BNC end onto the stripped cable, making sure that the
- inner wire fits into the VERY small hole up inside the center
- of the connector.
-
- 4. Get excited, you are almost there! On to the next section.
-
- [2-3] Required Software
-
- The required software that will be needed to play your game as far as your
- LAN card is concerned will come as three files:
-
- LSL.COM
- <A vendor specific driver> (Mine is NE2000.COM)
- IPXODI.COM
-
- Please do note: I have received several calls regarding an file called
- IPX.COM that comes with a lot of the LAN cards out there. From my experience,
- DOOM does NOT like these drivers unless you are attached to a fully server
- based LAN. This file IPX.COM, integrates all of the three above drivers
- into one itsy bitsy little file. If anyone out there has gotten DOOM to
- run with MORE than 2 player while using this file and you are NOT on a full
- Local Area Network, please write or call and let me know exactly what you
- did you make this configuration functional.
-
- This is purely speculation, but I believe that the IPX.COM file is geared
- toward a server based network and is not designed for peer to peer
- communication with the lack of some form of packet routing service available
- (such as a hub or router in a LAN).
-
- The final piece of required software is of course IPXSETUP.EXE. This file
- is supplied with DOOM v1.2 or above. To get two player game going with
- no special options simply type:
-
- IPXSETUP
-
- on both computers. If you wish for more than two players in a network game,
- you will have to specify the -NODES parameter when starting IPXSETUP.
-
- eg: IPXSETUP -NODES 3
-
- would start a three player game. A maximum of four players van be specified
- for a network game of DOOM.
-
- [2-4] Connecting the computers
-
- Now the the grand finale- Putting it all together.
-
- 1. Install the LAN cards in an available slot in your computer. Refer to
- the instruction manual provided with the card if you are unsure as how
- to go about doing this. If you still have trouble, call your 8 year
- old son/daughter into the room and have them do it! :)
-
- 2. Connect the BNC T connectors to the back of all the cards.
-
- 3. The two end computers (or both in a two player network) should have
- one of their BNC T ends capped off with the BNC terminators that we
- made earlier >> AGAIN I STRESS- THIS IS CRITICAL FOR PROPER NETWORK
- OPERATION!!! <<
-
- 4. Connect the remaining BNC T ends with the cables that we made earlier.
-
-
- Another poorly designed diagram:
-
- < or > indicates a terminator
- T indicated a BNC T
- === indicates the cabling
-
-
- <T===============T==============T===============T>
- ----------- ----------- ----------- -----------
- Computer #1 Computer #2 Computer #3 Computer #4
-
-
- 5. GO FOR IT!!!!
-
- ------------------------------------------------------------------------------
- SECTION *3*: Playing the game
- ------------------------------------------------------------------------------
-
- [3-2] Trouble Shooting
-
- The following section is a Questions and Answers section of commonly asked
- questions (hence the name FAQ I guess)
-
- Q) Why can I only get two players working?
- A) #1 Make sure that you are specifying the -NODES parameter for IPXSETUP.
- #2 Make sure that all of the LAN cards that you are using speak the
- same language (Ethernet 802.3, etc)
- #3 Make sure all of your cabling is properly connected and there are no
- shorts in it. (Some LAN cards WILL use a shorted cable as a terminator
- hence causing you a lot of grief trying to figure out why the third
- computer is not being recognized)
- #4 This one is somewhat a mystery, but it does happen:
- I have received several calls regarding an file called
- IPX.COM that comes with a lot of the LAN cards out there. From my
- experience, DOOM does NOT like these drivers unless you are
- attached to a fully server based LAN. This file IPX.COM,
- integrates all of the three above drivers mentioned in section 2-3
- into one file. If anyone out there has gotten DOOM to run with
- MORE than 2 player while using this file and you are NOT on a full
- Local Area Network, please write or call and let me know exactly
- what you did you make this configuration functional.
-
- Q) Why can't I get any of the computers to talk to one another?
- A) #1 Make sure that all of the LAN cards that you are using speak the
- same language (Ethernet 802.3, etc)
- #2 Make sure that the end computers have the Terminators attached to
- the open ends of the BNC Ts!
- #3 Check your cables for a dead cable.
-
- Q) What is IPX NOT DETECTED?
- A) ummm, go figure! (Load your drivers!)
-
- Q) Why does IPXSETUP give me an "OPEN SOCKET 0xFF" after I abort an
- IPXSETUP session?
- A) The original IPXSETUP.EXE has a bug in it. It does not close the
- communication channel that it opens if you abort it. The error 0xFF
- if generated by the IPX driver if you try to open an already open
- IPX socket (communications channel).
-
- Q) What can I do about "OPEN SOCKET 0xFF" short of rebooting the all of
- the computers?
- A) #1 Write a program that closes the open socket (yeah, right! :)
- #2 Obtain a copy of the IPXSETUP.EXE that I have modified and
- placed on Software Creations and the ftp site: infant2.sphs.indiana.
- edu called IPXSTP11.ZIP (located in the /pub/doom/multi_doom/net
- directory) I have corrected the bug in the program so that it will
- close the open socket before terminating. Other than this bug fix,
- IPXSETUP 1.1 is identical to the original IPXSETUP by ID (I used
- their source and simply recompiled it)
-
- Q) Why is my network game play so slow?
- A) #1 The speed of you network is limited to the following:
- -The speed of the SLOWEST computer
- -The speed of you network cards
- -The number of active images on the level being played
- #2 You are using a PWAD file that was either poorly created or
- the PWAD file you are using was run through a poor NODES builder.
-
-
- [3-3] Speeding up your game play (Notes for level builders)
-
- The speed of your network game play is based on several things. The
- most limiting factor in network game play is the speed of the slowest
- computer. For instance even if you have 3 Pentium/90s and only one 386sx/33
- running on a network, game play will be reduced to a crawl!
-
- Second is the speed of the LAN cards that you are using. I do not recommend
- that you use cheap 8bit cards, such as many of the ARCNET cards that you can
- pick up at a local computer show for half the price of a good 16bit card!
-
- Next, make sure that all of the cables and most importantly, the terminators
- are properly connected and of the right values. Excessive packet collisions
- can result, hence slowing down you game play.
-
- Finally, a note for level builders:
-
- The following is from my personal experience. If certain NODE builders are
- used to compile the necessary BSP information in a PWAD file, it can very
- seriously reduce the speed at which the game engine can generate images.
-
- The following is my personal review as well as ratings and problems that I
- encountered while developing my own PWAD levels:
-
- NODE builders (Best - Worst)
-
- Name Description/Problems
- -------------------------------------------------------------------------
- IDBSP10.EXE A port of John Carmack's source for Id's NODE compiler.
- Absolutely AWESOME! This is by far the best node builder
- that I have run across. No problems to mention.
- This program was written for GCC therefor is 32bit DOS extended
- and does not have any memory problems
-
- BSP11X, An excellent series of NODE builders! Before the above
- BSP11TC, mentioned program can into existence, this was my node builder
- BSP11W.EXE of choice. Problems: does not calculate REJECT data therefor
- some games can be slowed down, especially if there are a lot of
- monsters lurking about. Also, BSP11X and BSP11TC will run out
- of memory on large PWADs. BSP11W works in both Windows and DOS,
- if you use it in DOS, you are limited to 640k, and for you
- speed freaks out there like myself, you probably don't want to
- start up Windows just to compile your PWAD (unless you use a
- Windows WAD editor, yech!)
-
- VNB1050.EXE Builds a glitch free set of nodes, but does so in such a fashion
- that they are not optimized for use with the DOOM game engine.
- This will seriously slow down game play. If you have a faster
- computer, you may never notice this, but on a 386, you will most
- likely find that the games are a bit choppy when looking out
- across large areas.
-
- DEU's Well, I LOVE the editor, but their node builder still needs a
- little bit of work. In some complex areas, it will give you
- the Hall Of Mirrors effect.
-
-
- Here is my personal setup for creating PWADs:
-
- DEU521GCC The 32 bit extended port of DEU 5.21
- IDBSP10 For recompiling the NODES and other related BSP information
-
-
- [3-4] Recommended add on software
-
- [3-4-1] IPXFER
-
- file: IPXFER10.ZIP
-
- I wrote this package of software for sending files back and forth
- across an IPX network. I hate to brag, but I have received SEVERAL
- email messages about how useful this program is and have even had
- a few people wanting to register it (it's freeware, but if you want
- to send money for a registration fee, I'll gladly repay the favor in
- DOOM related software that I have collected from MANY sources free of
- charge)
-
- IPXFER is currently at version 1.00 and is available on Software
- Creations BBS and at the ftp site: infant2.sphs.indiana.edu
-
- It is designed to eliminate the headache of flipping floppies when
- you are swapping PWADS (wow, what a tongue twister). It will
- transmit data at rates between 50k - 250k per sec, depending on the
- speed of the slowest computer and the speed at which your computer
- writes to the harddrive (a cache helps) It is also capable of
- multiple file transfers (you can tell it to send *.*).
-
- [3-4-2] DFE
-
- file: DFE133.ZIP
-
- DFE stands for DOOM Front End. If you have a copy that is below
- version 1.33, you should upgrade as soon a possible! The lesser
- versions of this program were rather bug infested, sorry about that
- :(
-
- This program is basically like a menu system that allows you to
- choose what Episode/Level you want to play, Load an external PWAD,
- Select Number of player, and whether you want there to be No
- Monsters. It supports Single Player, Modem, Serial, and IPX network
- games. It also has a built in Map/Sprite Viewer that will allow you
- to locate all of the Weapons/Monsters/Goodies on a level and view
- them. The Map viewer can load external PWAD files and display their
- maps as well.
-
- This file is available at the same locations as IPXFER10.ZIP
-
- [3-4-3] IPXSETUP 1.1
-
- file: IPXSTP11.ZIP
-
- This program is a modified version of Id's IPXSETUP.EXE. It has
- been modified to eliminate that annoying little tick "OPEN SOCKET
- 0xFF" after you abort a Network game start up session (IPXSETUP).
-
- This program is 100% identical to Id's IPXSETUP other than the fact
- the this bug has been fixed.
-
- NOTE: If you download a copy of either IPXFER10.ZIP or DFE133.ZIP,
- the IPXSETUP 1.1 is included.
-
- This file is available at the same locations as IPXFER10.ZIP
-
-
- Software Creations BBS 14.4k Lines:
-
- (508) 368-7036
- (508) 368-4137
-
-
- Happy Hunting!
-
- Josh
- joshjackson@delphi.com
-