Graphics Display Device Driver for Microsoft Windows NT 3.5x
Systems Supported: IBM Personal Computer that contains the
Cirrus Logic 5465 graphics chip.
Device Driver Version: 1.71A
IMPORTANT:
o Read this entire document before beginning the device driver
installation.
o This package contains a Windows NT graphics-accelerator device
driver that supports the Cirrus Logic 5465 chip set.
o This README file is formatted for viewing on your screen.
With it you can:
- Use the Table of Contents to help locate specific topics.
- Use the Find option in the Edit menu of the Windows NT 3.5x
System Editor to help you locate specific information.
- Print the file.
o Your use of the enclosed device driver indicates your
acceptance of the following terms and conditions:
- You must be, and you agree that you are, a current licensee
of Windows NT 3.5x.
- You may make copies of this Windows NT 3.5x device driver
equal to the number of licensed copies of Windows NT 3.5x
you possess.
- All other terms and conditions of your Windows NT 3.5x
license agreement apply to this Windows NT 3.5x device
driver; however, this does not extend any warranty outlined
in such agreement.
Contents
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1.0 Supported Resolutions
1.1 Driver Limitations
2.0 Installing the Device Drivers
2.1 Installing for NT 3.5x
3.0 Setting Resolution and Color Depth
3.1 Setting Resolution and Color Depth for NT 3.51
3.2 DDC Monitor Detection
3.3 Interaction of the Refresh Frequency, Color Palette,
and Desktop Area
4.0 Trademarks
1.0 Supported Resolutions, Color Depths, and Refresh Rates
__________________________________________________________
This graphics-accelerator device driver supports these
resolutions and color depths:
Number of Display Properties Refresh Rates
Resolutions Colors Color Settings Supported (Hz)
640x480 16 16 60
640x480 256 256 60,72,75,85
640x480 65K High Color (16 bit) 60,72,75,85
640x480 16.8M True Color (24 bit) 60,72,75,85
640x480 4.3B True Color (32 bit) 60,72,75,85
800x600 256 256 56,60,72,75,85
800x600 65K High Color (16 bit) 56,60,72,75,85
800x600 16.8M True Color (24 bit) 56,60,72,75,85
800x600 4.3B True Color (32 bit) 56,60,72,75,85
1024x768 256 256 43i,60,70,75,85
1024x768 65K High Color (16 bit) 43i,60,70,75,85
1152x864 256 256 70,75,85
1280x960 256 256 60,75,85
1280x1024 256 256 43i,60,72,75
1600x1200 256 256 60,75,85
Notes:
In addition to the 640x480x16 color mode provided by the Cirrus
Logic GD5465 device driver, you can select a 640x480x16 color
mode by using the Standard VGA driver that is provided by
Microsoft from the Change Display Type dialog box.
In order to select 800x600x16 colors, you must select the Super
VGA driver that is provided by Microsoft from the Change Display
Type dialog box.
Refresh rates listed are supported by the computer. Actual rates
available will depend on the capability of the display monitor
attached to the computer.
A refresh rate designated with an "i" indicates the rate is
interlaced.
1.1 Driver Limitations
The NT 3.5x driver does NOT support Open GL applications. If one tries
to run a Open GL application, it will run unaccelerated in software.
The user will notice poor performance and color distortion.
2.0 Installing the Device Drivers
__________________________________
2.1 Installing for NT 3.5x
1. Select Control Panel from the Main group.
2. Select the Display icon.
3. Select Change Display Type.
4. Select Change from the Adapter Type area.
5. Select Other.
6. Place the Windows NT 3.5x Installation Disk into drive A.
7. Select Install and click on Yes when the Installing Driver
dialog box appears.
8. When the Windows NT Setup dialog box appears, select drive A,
and click on Continue.
A message appears stating that the drivers were successfully
installed.
9. Click on OK.
10. Restart Windows NT 3.5x.
3.0 Setting Resolution and Color Depth
___________________________________________
3.1 Setting Resolution and Color Depth
1. Select Control Panel from the Main group.
2. Select Display icon.
3. Select Color Palette and select 16 colors, 256 colors,
65536, or 16 million colors.
4. To select Desktop resolution size, go to the Desktop area
and use the slide bar to change to desired resolution.
5. Select Test to test the resolution.
If the display test screen is good, select Yes when the Test
Mode dialog box appears.
If the display test screen is bad, select No. Windows NT
gives you an error message.
6. If the display screen was good and you selected Yes,
Windows NT 3.5x prompts you to restart Windows.
3.2 DDC Monitor Detection
VESA Display Data Channel DDC detection is possible in Windows NT.
This feature enables Windows NT to query the monitor, and if the
monitor is DDC compliant, to return specific detailed information
about the monitor. This information includes the manufacturer,
model number, maximum resolution, maximum refresh rates, and other
monitor-specific details.
To use DDC, repeat steps 1 and 2 from section 3.0 above. You will
see the Display Settings dialog box. If your monitor is DDC
compliant, the Color Palette, Desktop Area, and Refresh
Frequency drop-down boxes will display what your monitor supports.
However, if you select the button marked List All Modes, you will
see everything that the graphics system supports. These may not
be the same settings your monitor supports.
For example, if your monitor's highest resolution is 1024x768,
that is the maximum setting you will see listed in the Desktop
Area drop-down box. However, under List All Modes you will see
higher resolutions because the graphics chip can support them.
If you select an unsupported mode from List All Modes, your
monitor might display the graphics improperly.
If you upgrade to a DDC monitor that supports higher resolutions,
the available settings in the Desktop Area drop-down box will
change to reflect the new resolutions. This same concept applies
to Color Palette and Refresh Frequency.
3.3 Interaction of the Refresh Frequency, Color Palette,
and Desktop Area
When you use the values available in the Color Palette, Desktop
Area, and Refresh Frequency drop-down boxes it is important to
understand the interaction among them.
The Desktop Area, or resolution, determines the availability of
refresh rates and color depths. If you set the Desktop Area to
640x480, all refresh rates are available in the Refresh Frequency
field, including 85 Hz. However, if you set the Desktop Area
to 1600x1200, the refresh rates are reduced in number, and 85 Hz
is no longer available. To use the higher refresh rates, you must
reduce the size of the Desktop Area.
Color Palette, or color depth, is not directly linked to the
selected refresh rate. For example, if the Desktop Area is set
to 800x600 and you select a Color Palette of 16.8 million colors
and a refresh rate of 85 Hz, the Color Palette is reset to
256 colors. This is because the monitor and graphics systems
might support 16.8 million colors and might support 85 Hz, but
not 16.8 million colors at 85 Hz.
By understanding the interaction and interdependencies and
adjusting the various display settings, you can arrive at a
comfortable display setting for you work.
4.0 Trademarks
______________
IBM is a trademark of the IBM Corporation in the United States
and/or other countries.
Microsoft and Windows are trademarks or registered trademarks of
Microsoft Corporation.
Other company, product, and service names may be trademarks
or service marks of others.
IBM DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS OR
IMPLIED, INCLUDING WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE AND
MERCHANTABILITY WITH RESPECT TO THE INFORMATION IN
THIS DOCUMENT. BY FURNISHING THIS DOCUMENT, IBM
GRANTS NO LICENSES TO ANY RELATED PATENTS OR
COPYRIGHTS.
THIS DRIVER IS COPYRIGHTED BY INTERNATIONAL BUSINESS
MACHINES CORPORATION. ALL APPROPRIATE RESTRICTIONS
APPLY.