This diskette contains Cirrus Logic GD543x video display drivers for use
with the RadiSys EXM13B VGA Controller running DOS or Windows 95.


DOS Installation

The DOS installation utility is located on the diskette labeled 
Windows 95 & DOS. To install the desired DOS display drivers and 
utilities, insert the diskette into the A: drive, then type the following:

	A:
	CD DOS
	INSTALL

This begins the installation of the software. Follow the instructions on 
the screen to install the listed display drivers and Cirrus Logic software. 
The installation process asks you the destination directory, then proceeds. 
At any time you may press [ESC] to abort the installation process and 
go back to DOS.


Application-Specific Display drivers

The Cirrus Logic video controller is 100% VGA compatible.  The display 
drivers on this diskette are supplied to improve the resolution for each 
supported software application package. The installation instructions 
for each display driver will follow the introduction section.  Follow the 
instructions carefully to be sure that each display driver is correctly 
installed.  All of the installation instructions assume that the diskette 
is located in drive A:.  If drive B: is used, the instructions should 
be changed appropriately.


CLMode

The CLMode utility allows you to configure options, define the type of 
monitor attached, and set the video modes supported by the Cirrus Logic 
chipset.  Note:  Some extended memory manager software may interfere 
with the correct operation of CLMode.


Using CLMode's menu-driven interface

At the DOS prompt type:  CLMODE

The main popup window consists of a number of buttons.  Each button 
represents a different option or menu.  The underlined letter of a 
button name specifies the hot key combination for that item.  For 
example, press the [ALT] and the underlined letter keys simultaneously 
or just the underlined letter key to select an option.  Note that to 
use a mouse, a mouse driver should be installed prior to running the 
CLMode utility in order to use the mouse pointer for button selection.


Configuring the attached monitor

In order to configure your monitor, you must select the correct monitor 
refresh rates for your brand and model. From DOS, this requires that you 
know the values to insert for the four refresh rates. CLMode cannot 
automatically detect these settings. If you are unsure, try running 
WinMode's auto-detect feature. Otherwise, use the settings discussed in 
your monitor's hardware reference manual.

Selecting the proper monitor refresh rate allows the Cirrus Logic chipset 
to display the highest quality output that it is capable of with the attached 
monitor. The monitor type determines what video modes will be available to 
your system. It will also determine the vertical refresh rates available. 
Generally, the higher the refresh, the better the screen will look.  

Monitor Brand:  Set for "Other Brand."

Monitor Model:  Set for "Other Brand."

Monitor Refresh Rates:  CLMode 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.

Refer to your monitor's hardware reference manual for information about 
your monitor. If this documentation is incomplete or missing, try running 
WinMode and setting the monitor brand and model.  The auto-detect feature 
will list available refresh rates.


Completing the Configuration

There are six option buttons available once you are satisfied with the 
brand, model, and refresh selections. 

Help:  Use the Help button to access detailed information about this screen 
and the information being requested in CLMode.

Undo:  Use the Undo button to return the selections to the default settings.

Option:  Use the Option button to access additional Flat Panel setup 
selections. 

About:  Use the About button to determine the software revision number.

Preview:  Select the Preview button to view each of the new video timings 
that you have selected to verify that they are compatible with your monitor. 
A list displays with various settings. Select Show to display your selection. 
After each test screen is displayed, press [Enter] to see the next video 
mode. If there is a problem, press [ESC] to return to the dialog box. Try 
a slower setting for the resolution that did not work and preview your 
choices again. Press Quit to exit the Preview mode.

Exit:  Use the Exit button to exit the application. Your selections are saved. 
A window displays to ask permission to make changes to the AUTOEXEC.BAT file. 
Answer Yes to have the system automatically insert a line that invokes CLMode 
with the proper settings.

On many systems the monitor type will be remembered from one session to the 
next. To test this, select a monitor type and exit the CLMode program. Turn 
the computer off for ten seconds. After rebooting the computer, run CLMode 
and verify whether or not the monitor that you selected is still enabled. 
If it is, it should not ever need to be set again in normal use. If the 
monitor type was not kept then you should select the option to have CLMode 
save the monitor type in your AUTOEXEC.BAT file. You are given this choice 
after selecting the Exit button.


Current controller status window

The information in the current controller status window displays the 
controller type, the BIOS version number, the amount of video memory present, 
the presence of the EEPROM, and whether the Centering TSR is loaded.


Using CLMode's command line options

When command line options for CLMODE.EXE are given at the DOS prompt, the 
menu-driven windows will not be displayed.  Instead, configuration, monitor 
type, video mode and refresh rate will be set at the DOS prompt.  The 
command line options for CLMODE.EXE are listed below:

	CLMODE {modenum} {montype} | {s n} }
Where:
{modenum}  =  mode number 
{montype}  =  monitor type 
	    
Valid mode numbers: 
0  VGA 
1  8514 
2  Super VGA 
3  Extended Super VGA
4  Multifrequency 
5  Extended Multifrequency 
6  Super Multifrequency 
7  Extended Super Multifrequency 

Valid monitor types:
t6=x(Hz)        640x480   @ (0 = 60, 1 = 72) 
t8=x(Hz)        800x600   @ (0 = 56, 1 = 60, 2 = 72) 
t1=x(Hz)        1024x768  @ (0 = 87i, 1 = 60, 2 = 70) 
t2=x(Hz)        1280x1024 @ (0 = 87i, 1 = 60, 2 = 70)
s               List status information. 

For example, to set video mode 3 type:

	CLMODE 3

For example, to select custom monitor timings with 
640x480 at 60Hz and 800x600 at 72Hz refresh type:

	CLMODE t6=0 t8=2

Typing an invalid option will display the command line help text. 
Typing [S] as a command line option will display the current CLMode settings.



Windows 95 Installation

To install the utility:

1.      Go to Start, Programs, Windows Explorer.

2.      Highlight the Win95 folder of drive A:.

3.      Highlight the ref_rate.inf file and click the right mouse button,  
	go to install.

To use the utility:

1.      Go to MY COMPUTER icon and double click on CONTROL PANEL.

2.      Double click on DISPLAY.  There will be a refresh tab for 
	changing the rates.

