
The video settings for an SVGA graphic card are usually stored
in D:\OS2\SVGADATA.PMI. Font20 is not really install anywhere,
instead the OS/2 SVGA.EXE util records the setting of an DOS session
where Font20 is installed. This requires an SVGA.EXE/graphics chipset
combination that really uses the graphic card while creating SVGADATA.PMI.

If theese prerequisites are done you will
 * install 8*20 and other fonts into the OS/2 fullscreen font file
 * patch BVHSVGA.DLL (SVGA base video handler) to  use default
   720*500 instead of 720*400 in new fullscreen sessions



how to do install it for OS/2 ...

  1. install the DOS version of Font20 into your OS/2 autoexec.bat

  2. install utils like
      * s3refresh, v7hfreq,.. (S3)
      * vmode,tlivesa (ET4000)
      * .. (whatever you have on your SVGA disk..)
     into your OS/2 autoexec.bat.

  2. restart the DOS session (fullscreen)

  3. start \OS2\SVGATMP.BAT (contains "D:\OS2\SVGA.EXE ON INIT")
     it should generate D:\OS2\SVGADATA.PMI.

     "YResolution      = 500"

     in "Text Mode: 80 cols, 25 rows."  chapter indicates success !

  4. rebuild new fullscreen font files:
     run DCP.CMD
     it will use fonts from
      * \OS2\VIOTBL.DCP (original OS/2 fullscreen fonts)
      * \OS2\DSPRES.DLL (windowed OS/2 sessions)
      * CP437_20.FNT/CP850_20.FNT

  5 look into config.sys for CODEPAGE=...
    replace the filename in the 'DEVINFO=SCR,VGA,D:\OS2\BOOT\VIOTBL.DCP' line

     CODEPAGE=                  use DEVINFO line

     437                        DEVINFO=SCR,VGA,D:\OS2\BOOT\VT437.DCP
     850                        DEVINFO=SCR,VGA,D:\OS2\BOOT\VT850.DCP
     437,850                    DEVINFO=SCR,VGA,D:\OS2\BOOT\VT437850.DCP
     850,437                    DEVINFO=SCR,VGA,D:\OS2\BOOT\VT850437.DCP


  6. call bvhsvga.cmd to patch a byte in D:\OS2\DLL\bvhsvga.dll
     you need unlock.exe from LxLite package.
     if it fails you may try "PATCH /A bvhsvga.pat" after booting
     from floppy, to command line (Alt-F1) or from other partition.


  7. reboot OS/2
     try mode 80,??
     where ?? is one of 25,28,31,36,42,50,63

