VBEHz 1.00
==========

A German documentation is no longer included to save time (and work).

This program increases the refresh rate on video boards supporting VBE 3.0.
To install it type "vbehz" (without quotes).



CAUTION: My program does not check, if your monitor supports the
         frequencies, set in VBEHZ.COM that's your job
         (see table in VBEHZCFG.TXT).
         I AM NOT LIABLE FOR ANY DAMAGE.
         (newer monitors, however, protect themselves by switching off)
For the default settings your monitor needs at least 82 kHz horizontal
scan frequency.



Currently supported resolutions:
  640x 480
  800x 600
 1024x 768
 1280x1024
 1600x1200
  320x 240
  512x 384
The more resolutions and colour depths your hard-/software supports,
the more memory will be used by VBEHz (800-1312 Bytes).

To see which modes your BIOS or VESA driver supports, run
MODELIST.COM |more



If VBEHz is resident and you run VBEHZ.COM again, the resident part will be
diabled until you run VBEHZ.COM once more. This allows you to load VBEHz
in your AUTOEXEC.BAT and disable it later for one or more programs.
En-/Disabling is done by calling INT 10h with AX=4FBEh, if VBEHz switches
to disabled, it returns AL=01h, if switches to enabled, it returns AL=02h.
If you use VBEHz within .BAT-Files, it will return errorlevel 2 for
enabled and 1 for disabled. If it is run for the first time, it will not
return an errorlevel (or errorlevel 0).


Notes:
 - The BIOS of your video board may not support all of these mode,
   and my program will not add the missing modes.
 - There may be problems with programs using DOS4GW, but I don't
   know why.
   If DOS/4GW is a seperate EXE-file you should replace it with
   DOS/32A, PMODE/W oder CauseWay.


Plannings for future versions:
Text modes 80x60, 132x43, 132x60, maybe also 132x25 and 132x30
(Could implement them now, but my ELSA Victory Erazor BIOS 1.55.00 sets
the modes incorrectly and I want to use my own prog, too)





Don't ask me how to program the RIVA 128, I don't know, I use the VBE 3.0.
If you need information about the RIVA 128, ask NVIDIA.
