		GDS755X Windows 3.1x Driver 1.30 Release
		----------------------------------------

Changes from 1.20 Beta 1 to 1.30 Release
========================================

File renamed:

CIREXT.DLL to 755X_486.DLL

Files added:

DPSWITCH.EXE to support internal TV display switch.

Files modified:

README.1ST, OEM755X.INF, INSTALL.INF, CIR755X.DRV, VDD755X.386,
755XVPM.DLL, WINMODE.INI, DCI755X.DRV, WINMODE.EXE, WM7542.DLL

Problems solved/New features:

-CIR755X.DRV v1.15 fixed panning/scrolling support for 4MB memory. 
 PDR#8956,8863.

-VDD755X.386 v1.17 changed version string.

-DCI755X.DRV v3.00B1.13 fixed screen corruption during MPEG playback 
 with panning/scrolling enabled. PDR#8832
 
-WINMODE.EXE v2.53.08 fixed problem with AITech PC/TV card, 800x600 
 with 64K colors is grayed out 800x600 panels. PDR#5438

-CIR755X.DRV v1.13 now recognizes 755X_486.DLL in place of CIREXT.DLL.

-VDD755X.386 v1.16 fixed garbage which appeared while opening windowed DOS
 during playback. PDR#8463

-DCI755X.DRV v1.12 fixed video corruption when playing 5:6:5 video
 format in 64K color modes. PDR#8488

-" enabled DCI for 1024x768x8bpp at 60Hz for 3.3 volt. PDR#8486

-" disabled chroma key in Simulscan 64K color modes with XGA panel.
 PDR#8546

-WINMODE.EXE v2.53.07 fixed display corruption when changing to higher
 resolution with panning/scrolling enabled. PDR#8485

-" added 1024x768 DSTN panel and new 4MB modes.

-WM7542.DLL v2.80 enabled mouse trails in 640x480-16M mode. PDR#8453

-WINMODE.INI added refresh rates for 4MB modes.

-755XVPM.DLL v1.10.005 added CR5F to progregs to reset it back to orginal
 value upon exit. 


Changes from 1.20 Alpha 1 to 1.20 Beta 1
========================================

Files modified:

README.1ST, OEM755X.INF, INSTALL.INF, CIR755X.DRV

Problems solved:

-CIR755X.DRV v1.12 fixed garbage occur when overlapping windowed DOS with
 Program manager in 16M modes with XGA panel. PDR#8400

-This driver is backward compatible with 7555.


Changes from 1.10 to 1.20 Alpha 1
=================================

Files renamed:

OEM7555.INF to OEM755X.INF, CIR7555.DRV to CIR755X.DRV, VDD7555.386 to
VDD755X.386, DCI7555.DRV to DCI755X.DRV, VPM7555.DLL to VPM755X.DLL.

Files modified:

README.1ST, INSTALL.INF, VDD755X.386, CIR755X.DRV, WINMODE.EXE, WINMODE.HLP,
WINMODE.INI, DCI755X.DRV, 755XVPM.DLL, TIMINGS.DAT.

Problems solved:

-CIR755X.DRV v1.11 added 7556 sign-on message.

-VDD755X.386 v1.15 added 7556 Chip ID.

-DCI755X.DRV v1.11 added 7556 Chip ID.

-755XVPM.DLL v1.10.004 added 7556 chip ID.

-" updated bandwidth equations and vertical interpolation VCLK limits.

-" added calculation and programming of CR5D.

-" added GD7555 hack to cover problems above 2.1x horizontal zoom which
 forces a 1/2 downscale.


Changes from 1.10 Beta to 1.10 
==============================


Files modified:

WINMODE.INI, VDD7555.386, CIR7555.DRV, OEM7555.INF, INSTALL.INF,

Problems solved:

-CIR7555.DRV v1.10 fixed display corruption when changing 
 resolution with DSTN 8x6 panel. PDR#7632 
 
-CIREXT.DLL v1.10 corrected version information.

-DCI7555.DRV v1.10 disabled DCI blt for 1k mode and 640x480x16M.

-WM7548.DLL v2.7 fixed screen corruption after changing from 
 640x480x16M to 800x600x16M w/ panning on. PDR#5197

- " windows display crashed after switching display type in DOS
 full screen and exit back to Windows in 1024x768 mode. PDR#5273

-Playing 2 avi files and 1 MPEG file simultaneously, the video display
 corrupts. PDR#5369

-GPF occurs when testing Winstone 96 in 64K color modes. PDR#4980

-DOS prompt does not show up when re-open a DOS full screen after pressing
 Ctrl-Alt-Del, Enter in DOS full screen with mode d and above. PDR#5042

-Winmode fails to display switch from CRT to SimulSCAN at 640x480 16 &
 24 bpp. PDR#4946

-Garbage appears when testing Winbench 96 with mouse trail on. PDR#5443

-Bandwidth noise appears when moving Video windows with MVA on. PDR#5450

-Xing MPEG Player video image is corrupted in 1x7x256 or 64K colors at
 above 70Hz refresh rate. PDR#6993, 6994

-Refresh rate can not be changed in 64K and 16M color modes with DSTN
 800X600 panel. PDR#7631

-Garbage followed with mouse trail during AVI playback and MVA is off.
 PDR#7636


Changes from 1.00 Beta 2 to 1.10 Beta
=======================================

Files modified:

WINMODE.INI, VDD7555.386, CIR7555.DRV, OEM7555.INF, INSTALL.INF,
DCI7555.DRV

Problems solved:

-Display is not centering for some of modes after setmode d or above in
 DOS window. HW problem.  Fixed in rev.CF. PDR#4961

-vdd7555.386 v1.06 fixed display is not centering for some of modes after 
 setmode d or above in DOS window. PDR#4961

- " fixed Video RAM test fails in modes E and 10 for WinSleuth Gold Plus 
 program. PDR#4962 

-" fixed Panel and CRT display are gone when pressing "Alt+Enter" in DOS 
 full screen after turning on SimulSCAN. PDR#5078

- " v1.09 fixed Display switch function fails when using "SIM" or "PAN" 
 after pressing Al-+Enter to switch from Dos window to Dos full screen.
 PDR#5047

- " v1.10 fixed some of WIN95 monitor refresh rate funcitons does not 
 working. PDR#5185.

- " v1.14   "   disable HW cursor in ICON when update RAMDAC.

-cirext.dll v1.09 add version #.

-cir7555.drv v1.08 disable HW cursor icon when update standard RAMDAC.

-CIR7555.DRV v1.09 removed patch for rev. CE.

-" Garbage appears when clicking on files at file open dialog box of 
 MS Word in with mouse trail. PDR#5223

-dci7555.drv v1.09 fixed garbage appears at bottom of Video Window 
 when playback a 2X Avi or Mpeg file with MVA on. PDR#5399

- " While displaying Cd-i off CD, there is substantial looseness in 
 Xing MPEG player v1.3. PDR#5371

-" Garbage appears when occluding by another window during playback.
 PDR#5400

-WINMODE.EXE v2.53.02 fixed refresh rate is incorrect when selecting 
 85Hz for 800x600. PDR#5425

-7555VPM.DLL v1.10.001 fixed the following:

 Checks SR14[0] to determine voltage.  5V operation of MVA not allowed
 above 72MHz and 3.3V operation of MVA not allowed above 52MHz as per
 Alan Kobayashi.

 MVA allowed only in 8 and 16 bit graphics modes.

 VCLK calculation adjusted to account for prescale being overridden by
 divide by 4 bit.

 Added virtual desktop support.

-7555VPM.DLL v1.10.003 update bandwidth equations.

- " disable vertical interpolation for VCLK > 50MHz.


Changes from 1.00 Alpha 3/4 to 1.00 Beta 1
===========================================

Files modified:

WINMODE.INI, VDD7555.386, CIR7555.DRV, OEM7555.INF, INSTALL.INF,
DCI7555.DRV

Problems solved:

-The test is stopped responding to the system when testing DispTest
 of DCT. PDR#5186

-Wallpaper is incorrect after switching from Dos full screen to
 Windowed dos. PDR#5203

-Screen is corrupted when pressing "Alt+Enter" to windowed Dos after
 display switching. PDR#5101

-Garbage appears when clicking on files at file open dialog box of
 MS Word. PDR#5223

-A portion of Wall paper is missing when switching dos full screen to
 window after changing from Simu to CRT. PDR#5044

-No dos prompt appears when opening windowed dos. PDR#5217

-Some refresh rates are not supported in 1024*768-64K mode. PDR#5022

-Refresh rates are changed to None after selecting 800*600-16M mode.
 PDR#5023

-Wrong display appears when pressing "Alt+Tab" twice in Dos full
 screen. PDR#5088



Changes from 1.00 Alpha 2 to 1.00 Alpha 3
=========================================

Files modified:

WINMODE.INI, WINMODE.HLP, WINMODEL.DLL, WM7542.DLL, WM7542L.DLL,
README.1ST, OEM7555.INF, 7555VPM.DLL, INSTALL.INF, CIR7555.DRV,
CIREXT.DLL, VDD7555.386, WINMODE.EXE

Problem solved:

-Panel display goes away after switching to Simulscan display from a
 full-screen DOS prompt.  PDR#4938

-Using a full-screen DOS prompt to change from CRT to Simulscan will
 cause the LCD display to disappear after exiting from DOS.  PDR#4947

-A flexible box is missing when using the box tool to draw a straight
 box in Paintbrush. PDR#4952

Changes from 1.00 Alpha 1 to 1.00 Alpha 2
=========================================

Files modified: INSTALL.INF, WINMODE.INI, README.1ST, OEM7555.INF

Problem solved:

None.  Same drivers as in 1.00 alpha 1.


Resolutions & Colors support
=============================

640x480   256 colors  (CRT/Panel/SimulSCAN and all panels)
800x600   256 colors  (CRT/Panel/SimulSCAN and all panels)
1024x768  256 colors  (CRT/Panel/SimulSCAN and all panels)
1280x1024 256 colors  (CRT/Panel/SimulSCAN and all panels)
640x480   64K colors  (CRT/Panel/SimulSCAN and all panels)
800x600   64K colors  (CRT/Panel/SimulSCAN and all panels)
1024x768  64K colors  (CRT/Panel/SimulSCAN and all panels)
1280x1024 64K colors  (CRT/Panel/SimulSCAN and all panels plus 4M video memory)
640x480   16M colors  (CRT/Panel/SimulSCAN and all panels except XGA DSTN)
800x600   16M colors  (CRT/Panel/SimulSCAN and all panels except XGA DSTN)
1024x1024 16M colors  (CRT/Panel/SimulSCAN and all panels except XGA DSTN 
                       plus 4M video memory)

How to install 755X Windows 3.1 Driver
======================================

Prior to installing these drivers, Make sure that Windows is using
the VGA driver that was included with Windows. If Windows is using any other 
driver, reconfigure Windows using Setup from DOS or from within Windows.

1. Insert the 755X Windows 3.1x Driver Installation diskette into A: or B:.
2. Run INSTALL.EXE on the diskette from Windows File Manager.
3. Follow instructions on screen to complete the installation process.
4. A WinMode program will pop up to ask user to select options.  Select
   any desired choice to fit your preference.

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

-MVA is disabled with 1024x768-256/64K at 70Hz and above. PDR#9232

-16M color modes should be grayed out, but are not, in Winmode.exe for the XGA 
 DSTN panel. PDR#8947

-The resolution area is grayed out in Winmode.exe with internal TV display.
 PDR#9018

-Display Doctor creates some garbage on screen with 800x600x16M at 60Hz in the
 VBE Compatibility Test. PDR#4878

-Noise appears when moving the Video window during hardware MPEG playback with 
 Margi card. PDR#8427

-Playing Video for Window after running the hardware MPEG with a Margi card 
 results in screen corruption. PDR#8428,8877

-Video image is left on the screen after running hardware MPEG with a Margi 
 card with panning/scrolling enabled. PDR#9306

-System hangs when testing the Overlapping BitBlts of Winbench 3.11 in
 16mil color modes. Only happened on one machine.PDR#5006


Windows 3.1 driver limitation
=============================

-If your display device, (eg. a DSTN XGA with up to 64K colors) does not 
 support a larger colordepth, please rerun SETUP from DOS and reconfigure to 
 a lower colordepth. 

-MVA on or off depends on the bandwidth of the system; this includes the
 amount of video memory, the capability of the CODEC, UDH.DLL profiling, etc..

-Before you change the color depth or resolution during video playback,
 turn off the playback video clip first, otherwise you will see unpredictable 
 results.

-Before you try to upgrade your current Windows to WFW 3.11, make sure you are
 not running in a 16 million colors mode.  If you are, then run Windows SETUP 
 from DOS, or Winmode from Windows to change back to either a 256 or 64K colors
 mode.

-Japanese and some Asian Windows 3.1x do not support a change-res-on-fly.
 Changing to a new resolution in Winmode will trigger a Windows reboot.

-Changing display mode or resolution-on-the-fly (ROF) can sometimes 
 result in a missing icon or a distorted image on the screen when AfterDark is 
 loaded in the background. This is because the AfterDark application does not 
 comply with some new features in this driver.

-After a resolution-change-on-the-fly (ROF), the user can no longer write 
 letters in the CIC Handwriter for Windows.

-A GPF is generated when running Mediamatic Player in Simulscan with a DSTN
 SVGA panel.  This is a Mediamatic application issue. 

-Mediamatic MPEG Arcade Player shows color drop-off in video clip.  This is
 a Mediamatic application issue. 

-Noise appears in the Compcore video playback window when reducing the video
 window to be smaller than 1:1X in 256 color modes. PDR#9238 (may be application
 issue)


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

755X English Windows 3.1x Installation Disk

Files w/ extentions .xx_ are compressed.

VGACOLOR 2G_ 
AVGA     3G_ 
PMSAVER  HL_ 
PMSAVER  SC_ 
CIR755X  DR_   v1.15
DCI755X  DR_   v3.00 B1.13
755XVPM  DLL   v1.10.5
256_1024 DR_   v4.41 a2   (non-linear drv for WIN-OS/2)
755X_486 DL_   v1.10 
UDH      DL_   v1.00 
DCIMAN   DL_   v1.00 
VDD755X  38_   v1.17
WINMODE  EX_   v2.53.08
WINMODEL DL_   v2.10
TIMINGS  DAT    
WM7542L  DL_   v1.6
WM7542   DL_   v2.8
WINMODE  INI 
CTL3D    DLL 
READOS2  TXT 
INSTALL  INF 
README   1ST 
INSTALL  EXE  v2.30.04
OEM755X  INF 
INSTLANG DLL  v1.07
INSTVDD  DLL  v1.00 b3
WINMODE  HL_  v2.51.07b
WM7542   HL_  
ICCVID   DR_  v1.10.0.6  5/9/95
DPSWITCH EXE  v1.00
