SENSATION!  (250-1651)            SVGA Video           Faxback Doc. # 2728

The video circuitry for your computer is included on the main logic board.
This circuitry features:

-IBM VGA compatibility plus support for 16-color, 1024 x 768 graphics;
 256-color, 800 x 600 graphics; 256-color 640 x 480 graphics; 640 x 480
 graphics; 16.8 million color, 640 x 480 graphics, 64K-color, 800 x 600
 graphics; 64K-color, 640 x 480 graphics; 32K-color, 800 x 600 graphics;
 16-color, 1280 x 1024 interlaced graphics; and bit block transfer
 (BITBLT) for enhanced video performance with Windows and hardware
 cursor applications.

-Support for 132-column text by 25 rows and by 43 rows.

-Compatibility with VGA analog monochrome and color, fixed-and-multiple
 -frequency monitors (including 8514/A-compatible monitors).

In its default mode, the video supports most software designed for the EGA
and/or VGA standard.  You must use a VGA analog color or monochrome
monitor.

The CLMODE.EXE video utility provided with you computer system enables you
to specify the type of monitor attached and change modes to optimize video
performance with certain MS-DOS applications.  The SETRES video utility
lets you specify video information for Windows applications.  The
available modes are listed in "Super Video Modes"  and "Standard Video
Modes."

MONITOR CONNECTION

Connect a VGA analog monitor to the video connector on the back of the
computer.  For an illustration, see "Setting Up Your System: in the
"Getting Started" section.

If you install an 8514/A-compatible expansion adapter, use a 26-pin
pass-through cable to connect the adapter to the VGA Feature connector on
the main logic board.  Refer to "Main Logic Board Layout" in the
"Installing Optional Hardware " section to locate the VGA Feature
connector.  Contact your computer dealer for the required cable.

MEMORY CONSIDERATIONS

The SVGA circuitry uses RAM within A0000-BFFFF range for video memory and
uses RAM within the C0000-C7FFF range for the extended video BIOS.  These
memory locations are used by standard VGA circuitry.  If you install an
EMS (Expanded Memory Specification) adapter or other device that is
configured to use these memory locations, a memory conflict can result.
Memory conflicts are errors caused when more than one device attempts to
use the same memory location.

The SVGA circuitry uses memory locations B0000-B7FFF for monochrome
mapping.  If you are running EMS software that uses this memory range,
either reconfigure the EMS driver or do not set the video fro monochrome
mapping.

Refer to your device documentation for information about reconfiguring a
device to use memory locations other than those used by the SVGA
circuitry.

For an EMS adapter, you can usually designate the exclusions when starting
the EMS driver.  Consult your device documentation to determine the memory
locations used.

WINDOWS VIDEO

In its default configuration, the SVGA circuitry supports most application
software that is designed for the VGA or EGA video standard.  Just turn on
the computer and install the application package as described in the
application documentation.  At system startup, the SVGA circuitry is
configured for 80-column text mode.  You can change the video mode for
Windows by running the applications you are running you may want to
install the application-specific drivers provided with the computer.

WINDOWS VIDEO DRIVERS

Your system includes factory-installed Windows video drivers.  IF you ever
need to reinstall the drivers, use the following procedure.  Before
reinstalling the Windows drivers, check the video driver that your system
is using.  If an error message is displayed during the installation, use
Windows SETUP to change to the standard Windows VGA driver.

1.  From the Program Manager, select the File menu.  The, select RUN.

2.  Insert the System Disc into the CD-ROM drive.

3.  At the prompt, type d:\svga\disk2\install and press ENTER.  Follow
    the instructions on the screen to install the Windows video drivers.

After installing the Windows video drivers, you may want to use the SETRES
utility to adjust the resolution of the video mode you use with Windows.

You need to create Video Drivers Disk 1 before you can install the MS-DOS
video drivers.  To create Video Drivers Disk 1:

1.  Insert the System Disc into the CD-ROM drive.

2.  At the MS-DOS prompt, type d: and press ENTER.  Then, type CD \SVGA
    and press ENTER.  Then, type MAKDISK1 and press ENTER.

3.  Follow the instructions on the screen.

Use the Video Drivers Disk 1 you created from the CD to install the MS-DOS
video drivers.  After installing the MS-DOS video drivers, you can use the
CLMODE utility to change video modes from the MS-DOS prompt.

INSTALLING THE MS-DOS VIDEO DRIVERS

Insert the video Drivers Disk 1 into the diskette drive.  Then type:

   a:

and press ENTER.  For information about the MS-DOS video drivers, type
README and press ENTER.  To install the video drivers, type INSTALL and
press ENTER.  Follow the Instructions on the screen to install the MS-DOS
video driver.

(smc-12/06/93)

˜