		    GDS7543 WIN95 Driver Release 2.50
		   -----------------------------------
		        GD7543 rev BC/BF silicon 

OEM/End Users Notes: 

-It takes two 1.44M diskettes to install the Win95 graphic driver because it 
 now includes DirectX 3 executables.  Please download them both and see 
 "How to Install 754X Win95 Driver" section below.


Changes from 2.40 to 2.50
===========================

Files modified: 

README.1ST, CLDD32.DLL, 7543.INF, CIRL.DRV, CIRL.VXD

Files removed:

-Replaced all DirectX modules with DirectX3 (DIRECTXV.ONE, DIRECTXV.TWO)
 self-extracted executables from MS.

Problems solved/New features:

-Added DirectX 3 support. 

-System lock-up running Wintach 1.2. PDR#4087

-Display shift and color distortion on some notebooks. PDR#4782

-MVA is disabled when running CompCore 2.10. PDR#4949

-System hangs on WB96 test. PDR#7084

-Screen corruption when more than one windows are tiled together. PDR#7127

			  
Changes from 2.30 to 2.40
===========================

Files modified: 

README.1ST, 7543.INF, CIRL.DRV, CLDD16.DLL, CLDD32.DLL, MCIAVI.DRV.

Problems solved/New features:

-During playing AVI files, the video data was expanded to outside of the
 video windows in TV-out mode. PDR#4866

-Mouse cursor can't move to the bottom of screen in 8x6 panels in LCD/Simul.
 PDR#4677

-Garbage occured while running Winbench 95' video test. PDR#4408.

-Add linear addressing support.

-Panel backlight is turned off for just a second and then comes back on 
 after the lid is closed. This affected some notebooks. PDR#4360


Changes from 2.30 b4 to 2.30 production
=======================================

Files modified: 

README.1ST, 7543.INF

Files removed:

TVFONT.REG (no long needed because the install script will modify the
registry)

Problem solved:

-Change 7548.INF script file to install an improved font type for TV during 
 the driver installation.


Changes from 2.30 b3 to 2.30 b4
=================================

OEM Notes: To see better TV font display, please run TVFONT.REG using
 	   Win95 Explorer.  This procedure will be integrated into Win95 
	   driver installation in the production release.


Files modified: 

CIRL.DRV, README.1ST, CLDD16.DLL, CLDD32.DLL, 7543.INF, CIRL.VXD, CL_REF.DLL.

Files added:

TVFONT.REG.

Problem Solved:

-Ok and Cancel buttons can't be seen in TV mode while running Monitor Refresh 
 utility. Correct the problem by cutting off 22 scanlines at the top.
 
-Several Graphic WinMark tests fail with GPF in some notebooks.

-Black line appears in 800x600 DSTN panel when play MPEG file in 640x480
 resolution. PDR#4253

-Display blocking via hot-key does not work properly. PDR#4275

-TV button is grayed out in all resolution except 640x480. PDR#4250

-Mouse cursor hot point is off after display switch. PDR#4123

-Improve font in TV. 


Changes from 2.30 b2 to 2.30 b3
=================================

Files modified: 

CIRL.DRV, README.1ST, CLDD16.DLL, CLDD32.DLL, 7543.INF, CL_REF.HLP,
CL_REF.DLL

Files added:

MCIAVI.DRV, ICCVID.DLL

Files removed: 

FILE.LST, REL_LANG.DLL.

Files renamed: 

754X.INF to 7543.INF.

Files added:

MCIAVI.DRV, ICCVID.LL

Problem Solved:

-Description corruption appears when place cursor on top of toolbar
 in MSWord for Win95. PDR#4124

-System locks up at ROP3 of DTA Misc Test and Background Palette Test.
 PDR#4127

-Individual components version numbers list have been consolidated in 
 README.1ST.

-In CRT only 1024x768 resolution, open DOS full screen and switch to VGA
 or SVGA panel, exit DOS full screen and it returns you to CRT. PDR#3626

Changes from 2.30 b1 to 2.30 b2
=================================

Files touched: 

FILE.LST, CIRL.DRV, 754X.INF, README.1ST, CL_REF.DLL, REF_LAND.DLL, 
CL_REF.HLP, CIRL.VXD.

Problems Solved:

-Remove TV checking when enable LCD.  This code causes LCD panel not to 
 come up when do hot-key display switch.

-Garbage shown on screen for a fraction of a second during Win95 boot up 
 process. PDR#3540.

-Updated Monitor Refresh utility to correct some incorrect foreign languages 
 translation.

-Put in version number for CIRL.VXD.


Changes from 2.20 to 2.30 beta 1
=================================

Files touched: CLDD16.DLL, CLDD32.DLL, FILE.LST, CIRL.DRV, 754X.INF, 
               README.1ST.

-Hot-key display switching causes panel to go blank or hang some notebook
 system. PDR#3963

-One square inch of desktop image surrounding the mouse cursor when 
 Ctrl-Alt-Del from DOS full screen. PDR#3950

-In some notebook systems, use hot-key to switch display when a DOS screen
 is opened would blacken bottom part of screen.

-Enable hardware mouse cursor as default instead of software.

-Default restart resolution drops down to 640x480 instead of 800x600 in a 
 SVGA panel after the it is powered off in CRT only mode with 1024x768 
 resolution. PDR#3941, 2460

-The Cirrus Logic driver description has been changed from 754X to 7543.

-In 1024x768 CRT only mode, hot-key switch to SVGA LCD and open DOS full 
  screen, hot-key switch back to CRT and exit DOS, CRT resolution becomes 
  800x600. PDR#3936,#3932

-Display automatically switches to CRT from SimulSCAN when continuously
 scrolling in windowed DOS box. #PDR3975, #3964

-CRT display is distorted and panel display is gone while running Winbench 96.
 PDR#3612

-In 800x600 64k colors, user is able to set new monitor refresh but the 
 new refresh does not take effect.

 
Resolutions & Colors supported
===============================

640x480x256
640x480x64k
640x480x16M
800x600x256
800x600x64k
1024x768x256
1024x768x64k (2 Meg video memory only)
1280x768x256 (2 Meg video memory only)


Known Problems
==============

-Changing resolution while video playback is runnning may cause GPF.  Make
 sure you turn off any video playback before changing resolution. PDR#3725

-VFW test failed in Win95 HCT test in 64k colors modes.


Win95 Driver limitation
=======================

-To have 1024x768 256c 72Hz vert. refresh support, the video BIOS version
 has to be v1.14 or later.

-In TV mode, open any application shows that bottom of the application is
 shown partially. 

-Switching from any non-TV display type to TV requires Win95 to restart.
 This is by design.

-In TV mode, the Win95 logo screen got shifted down.


How to Install 754X Win95 Driver
================================

1.  Click on the Start box in the lower left corner and proceed to Settings,
    Control Panel.
2.  Inside the Control Panel group, click on the Display icon to open the
    Display Properties folder and select the Settings tab (right most tab).
3.  Choose the "Change Display Type..." button and click the "Change..." 
    button in the Adapter Type group.
4.  Select the "Have Disk..." button and then insert the 754X WIN95 Driver 
    Installation diskette into the floppy drive A: or B: and proceed with 
    OK button.
5.  "Cirrus Logic 754X (Cirrus)" will be highlighted for a VLB system or 
    select "Cirrus Logic 754X PCI (Cirrus)" for PCI system.
6. Press OK and files are being copied from the diskette to your computer.
7. If a "Version Conflict" dialog box pops up and asks "Do you want to keep
   this file?", answer "No".
8. Press Close again to exit Display Properties folder.
9. Select Yes to restart computer before the new driver will take effect.


How to change colordepth
========================

1. Make sure you have installed the Cirrus Logic 754X Win 95' driver (see
   How to Install 754X Win95 Driver section above).
2. Click on the Start box in the lower left corner and proceed to Settings,
   Control Panel.
3. Inside the Control Panel group, click on the Display icon to open the
   Display Properties folder and select the Settings tab.
4. Click on the pull-down arrow from the Color palette area to select color
   depth.
5. Choose OK to restart Win95.

How to change resolution
========================

1. Make sure you have installed the Cirrus Logic 754X Win 95' driver (see
   How to Install 754X Win95 Driver section above).
2. Click on the Start box in the lower left corner and proceed to Settings,
   Control Panel.
3. Inside the Control Panel group, click on the Display icon to open the
   Display Properties folder and select the Settings tab.
4. Ajust the sliding bar either to Less or More from the Desktop area.
5. Choose OK and new resolution will take effect.


How to change monitor refresh rate and display type
===================================================

1. Make sure you have installed the Cirrus Logic 754X Win 95' driver (see
   How to Install 754X Win95 Driver section above).
2. Click on the Start box in the lower left corner and proceed to Settings,
   Control Panel.
3. Inside the Control Panel group, click on the Display icon to open the
   Display Properties folder and select the Refresh tab.
4. You can change to different refresh rates for different resolution and/or 
   switching to different display type in the Active display area.


Diskette Contents
=================

README   1ST    ; Release, Install and util. usage info    
7543     INF    ; Install script    
CIRL     DRV    ; 1.59 w/o text stretch compile flag on
CIRL     VXD    ; 1.25
CL_REF   DLL    ; 1.11.07
CL_REF   HLP    ; 1.11.07
CLBIOS16 DLL    ; 8/09/95
CLBIOS32 DLL    ; 8/25/95
CLDD16   DLL	; 1.27
CLDD32   DLL	; 1.28
CLMERGE  EXE    ; CL util. to combine DIRECTXV.ONE & DIRECTXV.TWO
DIRECTXV ONE    ; MS DirectX3 self-extracting executables in Disk 1/2
DIRECTXV TWO    ; MS DirectX3 self-extracting executables in Disk 2/2 
