The LIBGRX v1.03 will have the Mode X routines. Nearly all VGA drivers were
  updated to make this feature available. Since the Mode X isn't a standard
  BIOS mode, the driver has to program the VGA card on his own. The new
  256 color modes (320x240x256, 320x400x256 and 360x480x256) should be
  usable with *every* VGA-card and *every* VGA monitor. If there are *ANY*
  problems, please tell me about it !

  In addition to the Mode X support, there are two new 16 color modes.
  The 720x350x16 allows a pretty Hercules emulation on *every* VGA card,
  the 720x480x16 improves the standard resolution. Again, please tell
  me about any problems.

  The current go32 (1.10a) doesn't support graphics under DPMI control. It may
  be possible to use graphics with the LIBGRX v1.03. The available resolution
  will be limited by the 64k visible VGA ram. Using ModeX style memory access
  one may have up to 640x400 in 256 color mode. By now, only ET4000 chipsets
  worked well in HighRes ModeX (320x200,640x350,640x400,640x480,...).
  Please try the STDVGAX driver in 320x200x256 mode on your VGA card and send
  me a short notice about your result.

Please check out the updated drivers and tell me about your result.
If you've got a driver missing in this beta test, please send me the
original (or the changed) source.

Many thanks for your help,

Hartmut