ScanMode is a program developed by Keld "HeartWare" Hansen. It scans
through all modes on a VGA card and notes which modes are text modes and
what their resolution is. It then saves this information in a file of the
following format (PASCAL notation used):

                RECORD
                  Version       : BYTE          { Must be 6 }
                  Modes         : ARRAY[1..n] OF RECORD
                                                   ModeNo       : BYTE;
                                                   Width        : BYTE;
                                                   Height       : BYTE;
                                                   CharWidth    : BYTE;
                                                   ScanLines    : WORD
                                                 END
                END

The CharWidth and ScanLines are set to zero by ScanMode and are only present
in the file for future use.

To point to the file, a standard is enforced:
	The environment variable MODEINFO is used to point to the file.
	If the value of MODEINFO is a directory, then the file is called
	  MODEINFO.DAT in that directory.
	If the value of MODEINFO is a file without a file type, then .DAT
	  is assumed.
	If the value of MODEINFO points to an existing file, then that's it!

To switch into a specific text resolution, read the file, comparing the
requested screen width and height to the values found in the record. When a
match is found, you can switch into the mode specified by ModeNo and voil…,
you are in a text mode with that resolution.

Please note, that Borland/Turbo Pascal doesn't recognize these extended
text modes, and that if a person starts up a pascal program while being in
one of these modes, then the initialization code in the CRT unit switches
back into 80x25 (mode 3 or 7). Also note, that WRITE and WRITELN probably
don't work in the extended text modes. You will need to do your own screen
handling.

You are hereby granted an unlimited license to distribute this archive with
your Public Domain programs and the format of the file is released as Public
Domain as well.