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-
-
- Twilight Software
- Australia
-
- ...presents...
-
- ========
- XERIX II
- ========
-
- The Caverns of Mars
-
- by Brendan Reville
-
-
- (c) Copyright Brendan Reville 1994
-
-
- -- This program is inexpensive ShareWare --
- -- Please register --
-
-
-
- ---------
- Contents:
- ---------
-
- Overview
- ShareWare
- Ordering
- System Requirements
- Files
- Getting Started
- Playing the Game
- Trouble-Shooting
- The Sound System
- Miscellaneous
- Author's Closing Words
- How to Contact Twilight Software
-
-
-
- ---------
- Overview:
- ---------
-
- Xerix II is an awesome arcade adventure game set in the near
- future. One or two players pilot their deadly fighter craft in
- a perilous quest to destroy a fearsome alien force. An
- intriguing plot develops admist the many levels of intense arcade
- action, taking place in a variety of settings.
-
- The shoot 'em up is redefined in this horizontally-scrolling
- game, with power-ups, new weapons, energy bars and multiple
- lives, true multi-dimensional parallax scrolling, detailed VGA
- artwork, room-shaking sound effects and a beautiful digital sound
- track, with support for virtually every digital sound card in
- existence.
-
-
- The action takes place deep in the underground caverns of
- Mars, where a strange alien force, hostile to humans, has created
- a bizarre world. As the game progresses, more of the amazing
- truth is revealed.
-
- With intuitive menus, full in-game documentation and many
- registration incentives, Xerix II is going to be exciting. Hold
- on for the ride of your life, and remember to register soon. If
- you have trouble meeting the challenge, registration can even
- help you get through the tough bits.
-
- Brendan Reville, the 17 year-old school student who wrote
- Xerix II, has established Twilight Software as a major force in
- quality ShareWare games. He also wrote Xerix I, the immediate
- prequel to Xerix II (and highly-popular FreeWare game), when he
- was 15.
-
-
-
- ----------
- Shareware:
- ----------
-
- Xerix II is distributed under the ShareWare concept. The
- first half of the game - the first six levels - are available for
- free. If you wish to own the complete game - with all twelve
- levels - you must register.
-
- To register, contact PsL from anywhere in the world.
- (Australian customers can order through Twilight Software). See
- Ordering, below, for full details. The Registered version of
- Xerix II contains the following extra features:
-
- - the full 12 levels of the game, lots of intense action!
- - the complete story, discover the truth!
- - the cheat keys, helping you to get through the hard bits!
- - new artwork, even more detailed alien worlds!
- - new music, of excellent quality too!
- - new end of level aliens, even more fearsome and deadly!
- - new power-ups and weapon-configurations, more firepower!
- - a bonus game from the author!
-
- ORDER NOW TO RECEIVE ALL THESE THINGS!! ONLY $23.95 in the US!
-
- ShareWare relies on you to register. Xerix II is very
- reasonably priced, and the Registered version is loaded with
- attractive incentives. Register today, and support the ShareWare
- concept!
-
-
-
- ---------
- Ordering:
- ---------
-
- There are several easy ways to register Xerix II, listed below.
- Choose the method most convenient to you. Note that all payments
- include packing and postage.
-
- And why register? Because the Shareware edition contains only
- half of the Xerix II game. The Registered edition contains
- all 12 levels, with all new backgrounds, new music, new
- story segments (including the amazing truth about the
- hideous alien force), new power-ups, and information on the
- cheat keys to help you get through even the toughest bits!
-
-
- Credit Card Orders through PsL - all customers
- ----------------------------------------------
- You can order with MC, Visa, Amex, or Discover from Public
- (software) Library (PsL) by calling 800-2424-PsL (in the USA) or
- 713-524-6394 (international).
- Or you can send the order form (ORDER.DOC) by FAX to
- 713-524-6398 or by CompuServe email to 71355,470.
- Or you can mail the order form to PsL at PO Box 35705,
- Houston, TX 77235-5705, USA (using credit card or a cheque/money
- order in US funds/US bank). Cost $23.95 US.
-
- [Contact PsL for orders only]
-
-
- Australian Customers
- --------------------
- Australian customers can mail the order form with a cheque or
- money order to Twilight Software, PO Box 304, Milsons Point NSW
- 2061. Cost: $26.95 Australian Dollars.
-
-
-
- --------------------
- System Requirements:
- --------------------
-
- required:
- - 386 (or higher) processor
- - VGA display (or MCGA)
- - 560k free RAM
-
- supported:
- for sound and music:
- - Sound Blaster, Sound Blaster Pro, Sound Blaster 16, Pro
- Audio spectrum +, Pro Audio Spectrum 16, Gravis
- Ultrasound, Windows Sound System, AudioTrix Pro,
- Aria-based sound cards or PC Internal Speaker.
- - 256k EMS required for sound/music.
-
- recommended:
- - sound card
- - 486/33 Mhz (or faster) processor speed
-
-
-
- ------
- Files:
- ------
-
- You should have the following files in the Xerix II directory:
-
- xerix2.exe - the Xerix II program (run it!)
- xerix2.dat - the Xerix II data (the game needs it)
- xerix2.doc - the Xerix II documentation (you're reading it)
- order.doc - the Xerix II order form (Register!)
- license.doc - the Xerix II license form (vendors/users read!)
- x2src.doc - information on the Source Code Package
- (for programmers)
- file_id.diz - a description of the game, used by BBSes
-
- xerix2.cfg - the Xerix II configuration data file
- (this is created after you first play Xerix II)
-
-
-
- ----------------
- Getting Started:
- ----------------
-
- Playing Xerix II is simple. Simply type "XERIX2" and you're
- away.
-
- The game will ensure that you had about 560,000 bytes of
- free conventional RAM before starting. If it reports that
- insufficient memory is available, proceed to free some memory.
- The Trouble-Shooting section below gives some hints on this.
- Typing "MEM" at the DOS prompt (for DOS 5 or higher) or "CHKDSK"
- will tell you how much memory you have free (under "largest
- executable program size").
-
-
- The game will attempt to detect your sound card, if you have
- one. Otherwise the game will use your internal speaker.
- You must have at least 256k of EMS (Expanded) memory
- available if you wish to hear any sounds. Typing "MEM" at the
- DOS prompt (for DOS 5 or higher) will tell you how much memory
- is free.
-
- If you want to run the game without using any sound, run
- "XERIX2 nosound". This can also help the game to run faster.
-
-
- Once the system is initialised and the Twilight Software
- logo has been displayed, the Xerix II title screen will appear.
- Hit the space bar to skip this sequence.
-
- From the Main Menu the following choices are available:
- - Begin at Level One
- - starts a game from the very first level.
- - Begin at Level Seven
- - starts a game from the halfway mark. This choice
- will only be available if you own the Registered
- version of Xerix II.
- - Documentation
- - takes you to the documentation sub-menu.
- - Ordering Information
- - lets you view the on-line information on ordering
- the awesome Registered version of Xerix II.
- - Exit
- - takes you back to DOS.
-
- Beginning a game: From this menu choice you can choose how
- many players will play, and the difficulty level. Choose based
- on how much of a challenge you (and your partner) want.
-
- Viewing text: If you view Ordering Information or some of
- the Documentation, you can use the arrow keys to scroll the text
- up and down. Use the PageUp and PageDown keys to scroll more
- quickly. Hit ESC to leave this text.
-
-
-
- ----------------
- Playing the game
- ----------------
-
- Player 1, the blue ship's pilot, simply uses the arrow keys to
- steer the blue ship.
- The following keys all have the same purpose - shooting:
- Insert, Delete, 5, the grey +, the grey Enter, Right Shift.
-
- Player 2, the red ship's pilot, uses the following "grid" of keys
- to steer the red ship:
-
- Q W E
- A D
- Z X C
-
- The following keys shoot: S, Tab, Left Shift, F.
-
-
- Basically, shoot everything that moves (and even the things
- that don't), and try to avoid long streams of enemy craft as they
- move around.
-
- Sometimes, shooting enemy craft will reveal power-ups.
- These can be:
- - pink diamonds: these give you bonus points for your score.
- - blue capsules: these give you new weapons. If two are
- revealed near to each other, then they're probably the
- same; one for each player.
- - pulsing hearts: these recharge your energy.
-
-
- Turning on and off sound
- ------------------------
-
- The F3 key toggles (switches) the in-game music on and off.
- The F4 key toggles the in-game sound effects on and off.
- By turning off the sound the game can also be sped up a
- little, on slower computers.
-
- Speeding up game play
- ---------------------
-
- Due to the complexity of Xerix II's graphics system, some
- systems may experience slow game-play.
- However, there are two solutions:
-
- Firstly, the F1 key toggles (switches) various "layers" of
- artwork on and off. The less layers there are to draw, the
- faster the game will be.
-
- Secondly, the F2 key switches between Fast mode and Normal
- mode. In Fast mode, only every second frame of animation is
- drawn. Hence the scrolling is a little more "jerky", but the
- game speed becomes closer to its true, ideal speed.
-
- On slow computers the sound system will also slow the game
- down. The sound system can be disabled by running Xerix II with
- the "nosound" argument, like this: Type "XERIX2 nosound" to run
- the game.
-
-
-
- -----------------
- Trouble-Shooting:
- -----------------
-
- Insufficient memory:
- Have you checked that at least 560,000 bytes of
- conventional RAM are free? Use MEM or CHKDSK to find out.
- Note that conventional RAM is different to extended, XMS
- and EMS memory. With MEM, check that "Largest Executable
- Program Size" is at least 560,000 bytes.
- Create a boot-disk to boot with a minimum of settings
- in AUTOEXEC.BAT and CONFIG.SYS, or use MEMMAKER or another
- memory manager to solve the problem. Consult your DOS
- manual for more details.
-
- No sound:
- Do you have at least 256k of EMS (Expanded) memory
- free? Use MEM to find out. You might need to use an
- Expanded memory manager such as EMM386 or QEMM to create
- Expanded memory.
- See The Sound System, below, for directions on telling
- Xerix II exactly what sound-card you are using.
-
- The program locks up (either during the game or while loading):
- Try running "XERIX2 nosound" to see whether it's the
- sound driver that's causing the problem.
- If the program works with the "nosound" option, see
- The Sound System, below, for directions on telling Xerix II
- exactly what sound-card you are using.
-
- The program locks up when run from a floppy disk:
- The game is really intended to be run on a hard disk,
- and so it presumes that it can write to disk without a
- problem. You must make sure that the disk's write-protect
- "notch" is set so that it can be written onto, before the
- game is started.
-
- Specifically, sound problems with a Gravis UltraSound:
- No sound:
- Try using the -GT option in the XERIX2
- environment variable, as described below in The Sound
- System.
- Bad sound (samples sound incorrect):
- Try using the -G option in the XERIX2 environment
- variable, as described below in The Sound System.
-
-
-
- -----------------
- The Sound System:
- -----------------
-
- Xerix II uses a highly sophisticated sound system (called
- the Digital Sound and Music Interface) to play its music and
- sound effects. If you want to control specific attributes of
- this sound playing, you can set the XERIX2 environment variable
- (as shown below) with appropriate instructions. The following
- instructions can be used:
-
- -Sxxxx Set playback rate (4000-60000) or (4-60). Most
- sound devices can only reproduce up to a certain
- playback rate (like 44.1kHz) so Xerix II will
- automatically adjust the given sampling rate if
- it's too high.
-
- -Ixx Set the sound card IRQ (interrupt).
-
- -Pxxx Set sound device port address. This value is
- given in hexadecimal notation (eg 220, 240).
-
- -Dx Set sound card DMA channel.
-
- -Cxx Force sound device selection:
- 1 for Sound Blaster
- 2 for Sound Blaster Pro
- 3 for PAS+ (Pro Audio Spectrum Plus)
- 4 for PAS16 (Pro Audio Spectrum 16)
- 5 for Sound Blaster 16
- 6 for general DAC (Covox)
- 7 for Aria cards
- 8 for Windows Sound System & compatibles
- (like AudioTrix Pro)
- 9 for Gravis Ultrasound
- 10 for PC Speaker
- 11 for Stereo DAC (LPT1 & 2)
- 12 for Stereo-on-1 DAC.
-
- -8 Force 8-bit sound output. Sets 16-bit sound
- cards to 8-bit mode. This mode is a little bit
- faster but the quality is very poor compared to
- 16-bit.
-
- -Axxx Amplify by xxx. 31 is normal volume.
-
- -Txxxxx Set sound playback buffer size. Xerix II
- automatically adjusts the buffer size according
- to sample size, stereo and sampling rate but if
- you need a larger buffer, you can use this
- option.
-
- -G Use non-DMA download mode for Gravis Ultrasound.
- If you encounter problems with the GUS (samples
- sound incorrect), try this option.
-
- -GT Use PC timer instead of GUS timer for playback.
- If the music stops without a clear reason, it
- might be a problem with GUS timer.
-
-
- The XERIX2 environment variable is set at the DOS prompt,
- or in a batch file, as follows:
-
- C:> SET XERIX2=-C1 -P220 -P5
-
- Typing "SET" at the command prompt after doing this will
- show that the XERIX2 environment variable is set to the above
- line. The above line tells Xerix II to use a Sound Blaster on
- port 220h, with interrupt 5.
- Normally, you would only use this feature to tell Xerix II
- how to find your sound card if it has trouble initialising it,
- as the default (automatic) settings used are best. However, if
- you're feeling adventurous, you can try different settings to
- find out what works for you.
-
-
-
- --------------
- Miscellaneous:
- --------------
-
- Xerix II was written over a period of about eighteen months.
- All artwork, programming, designing and writing was done by
- Brendan Reville. Brendan wrote over 8000 lines of program code
- for the main program, as well as several thousand more for
- additional data.
- All the music was also by Brendan, except for four songs,
- which were written by foBik, of Sydney-based group CyberSquad.
- These songs are:
-
- level 1: Lil'Hyped
- level 6: KaoticSleep
- level 7: Lil'Tekno
- level 12: Diskordant00
-
-
- Programmers:
- The entire C source code to Xerix II is also available
- direct from Twilight Software in Australia! Read the file
- X2SRC.DOC for all the details on this once-in-a-lifetime offer.
-
-
- -----------------------
- Author's Closing Words:
- -----------------------
-
- "Xerix II has taken a long time to make. Finding time to
- work on it admist school work, going out, playing in a band and
- working on other programming projects has been, perhaps
- surprisingly, a great pleasure of mine. Xerix II has grown and
- matured in my eyes, and although I would have done many things
- differently the second time around, I'm happy with how it has
- turned out.
- "I love the concept of ShareWare because it gives so many
- people the chance to play my game. Xerix I, as FreeWare, was
- successful in my eyes simply because of the number of people who
- wrote back and told me how much they enjoyed it. I hope that
- Xerix II will be just as successful, but that requires the
- support of game-players like you. Please consider registering.
- I have deliberately priced the game to make it inexpensive for
- all customers.
- "And whether you like the game or not, I'd love to hear your
- comments on the game. Write to Twilight Software in Australia
- with any comments or suggestions. I'd like to personally thank
- all the people who wrote back regarding Xerix I.
- "Hopefully Xerix II will provide you with hours of
- enjoyment. If you do enjoy it, please don't hesitate to
- register. Your support will allow me to produce more games,
- which I would also like to make affordable for everyone.
- "Thank you, and best wishes... Brendan Reville."
-
-
- ---------------------------------
- How to Contact Twilight Software:
- ---------------------------------
-
- Feel free to write to Twilight Software at:
-
- Twilight Software
- PO Box 304
- Milsons Point NSW 2061
- Australia
-
- or Internet: twilight@sydney.dialix.oz.au
-
-
-
-
- -----------------------------
- Xerix II: The Caverns of Mars
-
- MCMXCIV
- -----------------------------