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read_me.txt
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1995-11-21
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Shockwave Assault Demo for Microsoft Windows« 95
------------------------------------------------
Contents:
----------------------------------
1. System Requirements
2. Controls
3. Video Mode
4. Microsoft Games SDK (DirectX)
A. Real Mode Device Drivers: Why they are not compatible
B. DirectDraw
C. DirectSound
5. Common Problems
6. Game Tips and Hints
----------------------------------
IMPORTANT:
If the game crashes inexplicably or there are sound and video glitches,
it is probably the result of a bad CD-ROM read or Microsoft Windows« 95 is manipulating
the swapfile. If the game crashes, simply restart the game from your latest
saved game. The problem will probably not happen again. If it does, you
may have a bad CD-ROM disk or your CD-ROM drive may have old device drivers
or your hardware may have loose cables, bad SCSI termination or some other
problem. If the CD-ROM appears undamaged, check your hardware and/or
contact the manufacturer of your CD-ROM drive to obtain the latest
software device drivers and/or hardware fixes.
----------------------------------
1. System Requirements
----------------------------------
Required:
Microsoft Windows« 95
486-66 MHz CPU or Higher;
8 MB Ram
1MB SVGA video card
10 Megs min of HD space
Double speed (300 K/sec) CD-ROM Drive
Natively-supported Microsoft Windows« 95 Soundcard
Required for 16bit (65,000) Color:
2MB SVGA video card
Recommended:
Pentium 90MHz or Faster
16 bit Sound card
Quad speed CD-ROM Drive
2MB SVGA video card
Supported:
Joystick
Mouse
NOTE: All Device Drivers relevant (CDROM, SOUNDCARD, DISPLAY, etc.) must be Protected
Mode (32-bit) drivers.
----------------------------------
2. Controls
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Shift - Thrusters
Ctrl - Lasers
Alt - Missles
Arrows - Left/Right/Up/Down
Esc - Skip Video
P - Pause
P then Esc - Quit
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3. Video Mode
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The red, green, and orange colors indicate which graphics modes will perform
best on your machine ( red is the worst, orange is marginal, and green is best ).
For Example, if you have a 486/66 processor chances are that 320 X 200 256 colors
will be your best selection. The Video Mode defaults to the highest green mode, or
the lowest orange. This will sometimes be a windowed mode. You can switch to a
full screen mode by selecting Video Mode from the launcher.
If Video is choppy, try a lower setting in Video Mode.
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4. Microsoft Games SDK (DirectX)
----------------------------------
Shockwave: Assault is the first Electronic Arts game that uses the DirectX application
programming interface (API) for Microsoft Windows« 95 game features. Please bear in mind
that even though the MS Games SDK is final, there are still several manufacturer's who
do not have DirectX drivers created for their products.
---
A. Real Mode Device Drivers: Why they are incompatible
---
Using DirectX as a Development environment entails several things for the end-user.
First, the end-user needs their hardware to be natively supported by Microsoft Windows« 95.
That means that when you go into the SYSTEM properties, every component should
be present there. If you have a CDROM, there should be a CDROM driver, etc etc.
If there are devices missing from the SYSTEM properties, then this usually
means that the device is being controlled by a Real Mode Device driver. (a Real
Mode Device Driver is a 16-bit "DOS" driver that is loaded in the AUTOEXEC.BAT or
CONFIG.SYS) DirectX APIs use 32-bit code to operate and when certain functions
are called during a program exectuion, DirectX will "LOCK" out 16-bit code. This
means that during these certain functions, any 16-bit driver will be stalled for that
split-second thus causing errors on a CDROM read or garbled sound from a soundcard etc.
---
B. DirectDraw
---
DirectDraw for the Microsoft Windows« 95 operating system is a software interface
which provides direct access to display devices while maintaining compatibility
with Windows GDI. It works with Microsoft Windows« 95 and will work with Windows NT.
DirectDraw provides a device-independent way for games and Windows subsystem
software such as 3-D graphics packages or digital video codecs to access display
device-dependent features.
DirectDraw works with a wide variety of display hardware, ranging from simple SVGAs
to advanced hardware implementations providing clipping, stretching, and non-RGB
color format support. The interface is designed so that applications can request
the capabilities of the underlying hardware, then use those capabilities as required.
All natively supported Display adapters in Microsoft Windows« 95 are supported by
DirectDraw. If for some reason your display adapter is not supported by DirectDraw,
then Shockwave: Assault will not be compatible either. Please Contact either your
Display adapter manufacturer or Microsoft for updated drivers.
---
C. DirectSound
---
Microsoft« DirectSound API is the audio component of the Microsoft Windows« 95
Game Software Development Kit (SDK) that provides low-latency mixing, hardware
acceleration, and direct access to the sound device. DirectSound provides this
functionality while maintaining compatibility with existing Microsoft Windows« 95
based applications and device drivers.
The Windows game subsystem allows game developers access to the display and audio
hardware while insulating them from the specific details of that hardware. The
overriding design goal in the Windows game subsystem is speed. Instead of providing
a high-level set of functions, DirectSound provides a device-independent interface,
allowing applications to take full advantage of the capabilities of the audio hardware.
The final release contains DirectSound versions of all sound drivers
included in the Microsoft Windows« 95 product. This includes the following:
- Sound Blaster: 8-bit cards, 16-bit cards, and the AWE32.
- ESS: 488, 688, 1488, 1688.
- MediaVision: PAS 16, PAS Studio, PAS Plus, Pro 3D, and Blue Lite Special.
- Aztech: Nova 16, Washington 16, Rocky 2.
- Microsoft: Windows Sound System.
Sound cards which do not have DirectSound drivers can still be accessed
through DirectSound. If no driver is available, DirectSound will use its
emulation layer to communicate with the device through the standard Wave
driver interface. This provides full DirectSound functionality, but
increases latency significantly and prevents access to hardware
acceleration.
We have also encountered faults in certain situations on the Roland
Rap 10 and the Gravis UltraSound MAX.
Shockwave: Assault NOTE: The latency that Microsoft is describing will cause
all movies to play incorrectly or not play at all. We also encountered problems
with the MediaVision Thunderboard.
----------------------------------
5. Common Problems
----------------------------------
Q: Why must I have a 2MB SVGA adapter for 65,000 colors (16-bit color)?
A: DirectDraw uses the video memory of the SVGA adapter to manipulate the
surfaces of an image. If it cannot fit all of the data into video memory,
then it uses the main memory of the computer which is much slower.
A 16-bit color (65,000) surface usually uses, at a minimum, 1.2MB of video memory.
Q: Why can't I use my soundcard? I know it's not
supported with a native Microsoft Windows« 95 driver; but I still hear sound in
Microsoft Windows« 95.
A: Sound cards which do not have DirectSound drivers can still be accessed
through DirectSound. If no driver is available, DirectSound will use its
emulation layer to communicate with the device through the standard Wave
driver interface. This provides full DirectSound functionality, but
increases latency significantly and prevents access to hardware
acceleration.
Unfortunately, this "latency" that Microsoft mentions is severe. It is
possible to use an unsupported soundcard, unfortunately, the latency causes
the movies to play incorrectly and also causes severe pausing in gameplay.
Q: When my machine is running Profiler, after several of the screen tests
my machine will lockup causing me to reboot the computer. What is
going on?
A: During our test cycle, we encountered one instance where a certain video
card (S3 Trio 32/64) would not ever complete the Profiler program. We tested
several of this same video card and it was isolated to a single one of these.
If this happens, please contact the manufacturer of your system or Microsoft for
an updated video driver, and possibly an updated DirectDraw driver.
Q: When my machine is running Profiler the screen will occasionally stay black for
a long time. Is the program locking up?
A: No, certain video cards cannot display some of the resolutions that Profiler tries to
test. If for some reason you choose a resolution in Video Mode, and during flight you
hear sound effects but see no graphics; then switch do a different resolution in video
mode. The situation we encountered during the test run was with a #9FX Motion 771 video
card configured with either 2mb or 4mb of VRAM. In resolution 320x200 either stretched
or windowed with 256 colors, the game would show movies correctly but not show gameplay
as in the above situation.
Q: All of my hardware is supported by Microsoft Windows« 95 natively, but I still can not
get the game to load (or I am getting an error in the install). What is wrong?
A: Certain manufacturers are pre-installing Microsoft Windows« 95 on their retail machines.
Unfortunately, some important drivers, called CODECS, are being left out. To
see if this may be your problem, try playing one of the .AVI files on the Shockwave
CD. These movies were compressed using the Microsoft IMA ADPCM Audio Codec; and if
this driver is not installed on your system, the movies will not play correctly. To
check if this driver is installed:
1. go to CONTROL PANEL
2. go to the MULTIMEDIA properties
3. go to the ADVANCED tab, click on the AUDIO COMPRESSION CODECS.
4. If the Microsoft IMA ADPCM Audio Codec is not present,
then follow these directions to install it:
1. close the MULTIMEDIA panel
2. go to the ADD NEW HARDWARE panel,
3. click on NEXT, then on the next screen click on NO
4. use the Scroll bar to find and double-click on OTHER DEVICES,
5. use the Scroll bar to find MICROSOFT AUDIO CODECS under Manufacturers.
6. choose IMA ADPCM Audio Codec.
The only manufacturer's machines we encountered this problem on in our
testing phases was Packard Bell.
Q: What specific ways have we found to improve game performance when accessing the disk
drives?
A: Use a Disk Defragmenter to defragment your harddrive. Also, install to the same drive
letter that Microsoft Windows« 95 is installed to.
----------------------------------
6. Game Hints and Tips
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1. Basics
The Radar display shows a dotted line representing a safe zone in which you
can fly. When you leave this zone you will receive a message "OFF PATH".
Outside this zone the Omaha is using Orbital Lasers and Missiles to kill the
aliens. You will be hit by friendly fire if you stray out of the safe zone.
The refueling drones will not always give a full load of everything, and stop
rotating when empty.When approaching a field of energy, use thrusters and a
left or right arrow key to initiate a roll, chances are the field won't touch you.