This diskette contains Cirrus Logic GD543x video display drivers for use
with the RadiSys EXM13B VGA Controller and Windows 3.1


!!!  IMPORTANT NOTE:  !!!
Before upgrading drivers from a previous release:

Before installing the new drivers you should use Windows Setup to 
select the VGA or SUPERVGA video driver so that when you install the 
new drivers, there is no chance of overwriting the driver that Windows 
is using to control your screen. 

Next go to the system directory, and find a file that is named OEM?.INF 
where the question mark is a number. There may be more than one of these. 
These files are the different OEMSETUP.INF files that have been used to 
configure Windows for different devices. Using a text editor, such as 
Notepad or Edit, look at them until you find the one that is for the 
previous version of the Cirrus Logic video drivers and delete it. This 
is not completely necessary, but if you don't delete old files the drop 
down box for Setup soon becomes very cluttered with different versions 
of the same files. Also, in many cases the old files have been overwritten 
by newer ones, and no longer exist anyway. 

Installation
The Windows installation utility is located on the diskette labeled 
Cirrus Logic GD543X VGA Drivers for Windows 3.1 Disk 1 of 2. There are two 
diskettes used for the Windows 3.1 installation. You must be running Windows 
in order to install the desired Windows display drivers and utilities. 

Insert the diskette into the A: drive, then either use File Manager or 
the File/Run method to execute A:\INSTALL.EXE.

Follow the instructions on the screen to install the listed display 
drivers. A warning message displays informing you that you should be 
using the standard Windows VGA or SVGA driver to proceed.

You can tailor the installation to your needs by selecting the destination 
drive and directory. Be sure to enter a directory so that the installation 
does not simply dump files into your root or into the large C:\WINDOWS 
directory.  The installation program provides a default location of 
C:\WINDOWS\VGAUTIL.  

Once the software is copied from the distribution diskette, the installation 
creates a Cirrus Logic group and icon. After the installation is complete, 
start the WinMode application and supply information about your current 
monitor and drivers. Note that you can cancel out of WinMode if necessary.

WinMode

The WinMode utility runs under Windows 3.1 and allows the user to change 
the screen resolution, number of available colors, and to select either 
large or normal size fonts and system resources.

WinMode is run by selecting the WinMode icon. The first time that you run 
WinMode, the settings for the current driver won't be correct, after you 
set them once, they will be correct from then on.

The following selections are made in WinMode:

Monitor Brand:  Select the Monitor Brand button. The Monitor Brand setup 
window displays. The current monitor brand is highlighted initially. Use 
the cursor keys or the mouse to choose the brand of monitor attached. If 
your brand is not present, you may want to check with Cirrus Logic to see 
if later versions of the WinMode software support your monitor brand. 

Monitor Model:  Select the Monitor Model button. When you select the 
Monitor Model button above, a list of recent models sold under that brand 
name displays. If your model is not present, you may want to check with 
Cirrus Logic to see if later versions of the WinMode software support 
your monitor model.

Monitor Refresh Rates:  Once the brand and model are selected, WinMode 
displays several options for refresh rates at various settings. For some 
settings, there may be only one refresh rate option available. Note also 
that some of the higher resolutions may not be supported.

Colors:  You can choose 16, 256, 32K, 64K, or 16M colors.

Resolution:  You can choose 640x480, 800x600, 1024x768, or 1280x1024 
resolution.

Font Cache Size:  You can increase or decrease the font cache size, 
depending on your needs. The font cache is memory available for saving 
bitmaps of frequently used fonts. WinMode tries to set the optimum cache 
size for you, but you can make adjustments as necessary. 

Operating System:  Choose between DOS-Windows and OS/2-Windows depending 
on your system.

Font Size:  You can choose between large and small fonts. With smaller 
monitors, the larger fonts are more readible. Small fonts are for large 
monitors with higher resolutions.

After new options have been selected, click the OK button. You are asked if 
you are ready to restart Windows in order for your changes to take effect. 
If you say No, then the changes you made are discarded.

For help on the WinMode utility, select Help from the program menu.

If an incompatible display setting is inadvertently selected such  
that the display is unviewable, exit Windows and use the DOS CLMode 
utility to select a different setting. CLMODE.EXE is located in the 
C:\WINDOWS\VGAUTIL directory.
