A Fast Genoa Phantom 64 VESA Driver
                      -----------------------------------

        This is a tiny COM program that overrides the VESA BIOS Bank
        Switch routine for Genoa Phantom 64. It will probably work on
        any S3 864 -based display card, and possibly even on any S3
        964 card. The new routine is many times faster than the one
        in S3 VESA BIOS. The program takes only 448 bytes of memory
        and can be loaded high.

        FreeWare program, Copyright (C) 1995 Patrick Aalto (ap@jyu.fi).
        Use this program at your own risk. If it doesn't work for you,
        either don't use it, or fix it (since the sources are included)
        so that it does.

        Here are some results from svgatest.exe for my GP64 card. The
        reason why drwline does not get faster is that svgatest draws
        lines that do not cross bank boundaries.

                           VESA BIOS          GP64VESA.COM       Gain
                   -----------------     -----------------     ------
        blkget:     1974.5 Kpxls/sec      2000.0 Kpxls/sec       1.3%
        blkput:    10476.4 Kpxls/sec     11567.3 Kpxls/sec      10.4%
        drwbox:     1548.6 Kpxls/sec      3131.9 Kpxls/sec     102.2%
        drwfillbox: 9305.5 Kpxls/sec      9934.5 Kpxls/sec       6.8%
        drwline:    2763.6 Kpxls/sec      2763.6 Kpxls/sec       0.0%
        drwpoint:    365.0 Kpxls/sec       453.3 Kpxls/sec      24.2%
        getpoint:    371.8 Kpxls/sec       464.4 Kpxls/sec      24.9%


        Patrick Aalto
        ap@jyu.fi
        http://www.jyu.fi/~ap/