    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1710          05/06/97

    TITLE:  SiS6205 Shows 1280x1023 Resolution Only

    ISSUE

       After using the SiS Tools to set the video resolution to
       1280x1024, the Display Setting under Windows 95 Control Panel
       shows the resolution is set to 1280x1023 instead of 1280x1024.

       This issue affects all the systems equipped with the SiS 6205
       video chip.

    BACKGROUND

       According to SiS, the 6205 display driver is designed to only
       show 1023 scan lines at 1280x1024x256 color display mode. The
       1024th scan line is blank, and the extra memory left from not
       displaying the last scan line is used for graphics performance
       enhancement.

       The impact of dropping one line from 1024 lines is negligible to
       the end user.

    ACTION

       SiS 6205 is designed to show an actual resolution of 1280x1023
       when set to 1280x1024x256 color display mode.

       There is no need to take any action as the system is operating as
       designed.

    NOTES

       N/A

    TAN APR 2018EL

    ---------------------------------------------------------------------
    The information in this data sheet is subject to change without
    notice. AST Research, Inc. shall not be liable for technical or
    editorial errors or omissions contained herein; nor for incidental or
    consequential damages resulting from the furnishing, performance,
    or use of this material. This material contains information protected
    by copyright. No part of this material may be reproduced in any form
    without prior written consent from AST Research, Inc.
    All rights reserved.
    ---------------------------------------------------------------------
    Revision 01