Release Notes for STB Horizon

                          Windows Drivers Update

                               October 1993

   This driver update for Windows 3.1 corrects several obscure bugs that
specific customers have experienced.  The bugs are listed below.  Also, these
drivers feature several optimizations that will improve the performance of many
applications.  The new features include a circle algorithm, 16 bit DIB, Stretch
DIB and Stretch Blt support on the 256 and 64K color drivers, and font and hatch
pattern caching on the 256 color driver.  Updating to these drivers is
recommended.

                Summary of New Device Driver Files

256_1024 DRV    123392 10-20-93  12:22p         256 Color Multi-Res Driver
64K_800  DRV    113824 10-20-93   1:10p         64k Color Multi-Res Driver

           Description of bugs corrected by this Driver Update

   1.  In certain rare instances, the fonts would become corrupted.  The only
known ways to cause this were to allow Wintach to run for 2 days, or to fiddle
with the darkness adjustment on the After Dark flying toasters screen saver.

   2.  Garbage would appear on the After Dark virtigo screen saver.

   3.  The game Taipei 3 would get garbage if the windows were stretched.

   4.  A text clipping problem would occur after scrolling in the windows file
manager.

   5.  The Microsoft flying windows screen saver would sometimes generate a
general protection fault.

   6.  Stray pixels would appear at the left and right sides of the tool bar
when running the Wintach CAD benchmark.

   7.  Some colors would be displayed wrong in Adobe Illustrator 4.

   Note that these problems are common to Windows drivers for Cirrus 5426 based
cards from other vendors also.



                                Clay Montgomery, Windows Driver Development