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1996-09-11
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1-19-96
GDS7548 Windows 3.1x Driver 1.20
--------------------------------
Changes from 1.10 to 1.20
=========================
Note: Only use this driver with GD7548 rev.CE and PCI/VLB bus. Don't use
it if you have GD7548 rev.BD and PCI bus.
-Fix problems. See problems solved below.
-Add memory map support.
-Add VPM support.
-Add hot-key display switching without using power.drv.
Resolutions & Colors support
=============================
Notes: Use the following table carefully. With panning/scrolling features
enabled, higher resolution can be acheived even with smaller panel,
ie. 1024x768 resolution running in 640x480 TFT panel. The same does
not apply to color depth.
640x480 256 colors (CRT/Panel/SimulSCAN display & all panels)
800x600 256 colors (CRT display and all 8x6 panels)
1024x768 256 colors (CRT display only)
1280x1024 256 colors (CRT display and 2M video memory)
640x480 64K colors (CRT/Panel/SimulSCAN display except 8x6 DSTN panels)
800x600 64K colors (CRT display & 8x6 TFT panel only)
1024x768 64K colors (CRT display and 2M video memory)
640x480 16Mil colors (CRT display and 6x4 TFT panel only)
Localization supported
======================
Support QA
------- -----------
English Win31 YES YES
Japanese Win31 YES In progress
European Win31 YES YES
How to install 7548 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 7548 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.
OS/2 2.1x Warning
=================
If you are installing these windows drivers into WIN-OS/2 2.1x, at the end
of this installation, a WinMode utility program will pop up to allow you to
choose different colors and resolutions. MAKE SURE you select the
"OS/2-Windows" option in the Operating System group.
QA Notes
========
-Because Cirrus Logic did not receive a full functional notebook system
at the time of this software release, QA cannot verify any features that
require interaction between the system BIOS and the VGA system.
-VPM is being tested using Pixel's TV-Tap as a client, attaching a TV indoor
antenna, & a video camcorder/player as sources of video input. Another VPM
client,Margi's MPEG decoder, is also being used to test MPEG video playback.
The following resolutions, color depths & vertical refresh rates are
supported by the VPM Provider:
RESOLUTION COLOR DEPTH VERTICAL REFRESH RATE
---------- ----------- ---------------------
640x480 256 colors 60 Hz
800x600 256 colors 60 Hz
1024x768 64K colors 60 Hz
640x480 64K colors 60 Hz
800x600 64K colors 60 Hz (2M video memory only)
Problems Solved
===============
-Edit icon in Amipro 3.1 for Windows hangs system in 64k color. PDR#3190
-A General Protection Fault (GPF) occurs when running the video test
portion of Winbench 96 in 64K colors only. PDR#3427
-A GPF occurs when running Winbench 96 in 800x600x256 colors and display
is at simulscan. PDR#3526
-MVW is not enabled when running an avi file in 800x600x256 colors.
PDR#3379
-Ghost images appear in a DOS full screen when running in simulscan or
panel only display, 3.3 volts, and using a DSTN VGA panel. PDR#3548
-A General Protection Fault (GPF) occurs when running the video test
portion of Winbench 96 in 800x600x256 colors, Simulscan only. PDR#3526
-Adobe Photoshop hangs when mouse trails is enabled. PDR#3633
-Windows Solitaire/Minesweeper hangs when configured for 3volts,
800x600x64K, & mouse trails enabled. PDR#3594
-A GPF occurs when loading & running an mpeg file at 1024x768x256
colors. PDDR#3651
-The LCD/Panel looses its display when toggling between a dos prompt
& the PM desktop. PDR#3749
-Screen goes out of sync when switching display to TV. PDR#3308
-Garbage lines appear after making a graph in Excel. PDR#3437
-1x image still remains after user zooms to 2x video clip when a DOS full
screen is active. PDR#3215
-A corrupted DOS prompt icon is displayed after toggling between a full-
screen DOS & the PM desktop. This was fixed by disabling the resize
option inside the winmode.ini.
-Noise is evident when running the video portion of Winbench 96 in 1024x
768x256 colors with panning/scrolling on. PDR#3436
Known Problems
==============
-Switching from Simul. or LCD only to TV produces unpreditable result.
PDR#3818
-Upgrade to WFW 3.11 from Win3.1x with Cirrus driver installed produce error
message "error loading svga256.drv".
-The magic school bus introduction scene causes corruption on the program
manager window. PDR#3301
-Bandwidth corruption occurs when displaying a video in simulscan with
expansion turned on. PDR#3476
-Screen corruption occurs when performing a video playback for more than
5 minutes. PDR#3520
-Characters in modes 10, 12 and f are cut-off after scrolling the text on
a DOS full screen. PDR#3562
-Mediastones causes some systems to hang when running 'Clipping' and/or
the 'Multiple Playback" tests. PDR#3226
Windows 3.1 driver limitation
=============================
-Japanese and some Asian Windows 3.1x do not support change-res-on-fly.
Changing a new resolution in Winmode will trigger Windows reboot.
-Execute Change-res-on-fly and part of a dialogue box remains after importing
Microsoft Windows Metafile (*.WMF) in Adobe Illustrator 4.0. This is a
problem with application not knowing new res. has taken effect. PDR#2796
-Use Winmode to switch from low res. to high res with a file open in Adobe
Illustrator 4.0, dragging the scroll bar outwards will leave image of
the scroll bar. This is a problem with application not knowing new res.
has taken effect. PDR#2821, PDR#2822
-Changing display mode or changing resolution-on-the-fly (ROF) sometimes
results in an icon missing or distorted image on screen when AfterDark is
loaded in the background. This is due to AfterDark application not
compatible with some features in the driver.
-Image is incompletely redrawn after switching from low resolution to high
resolution and GPF warning usually occur in Adobe Illustrator 4.0. - PDR 2822
-After resolution-change-on-the-fly (ROF), user can not write letters in CIC
Handwriter for Windows.
-A GPF is generated when running Mediamatic Player in SimulSCAN with DSTN
SVGA panel. This is a Mediamatic application issue. - PDR 1767
-Mediamatic MPEG Arcade Player shows color drop-off in video clip. This is
a Mediamatic application issue. - PDR 2609
-Large font remains after switching back from TV to any non-TV display mode.
This is by design because Windows characters look better in large font in
TV and WinMode currently has no way to save the font size before the TV
switch. The users just have to be made aware that they need to change back
to small font if that is what they desire after switching back from TV mode.
This can be accomplished by selecting the small font radio button before
pressing OK from the main WinMode dialog- PDR 2732
-MS Magic School Bus problem corrupts screen.