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                            Turbo Font v5.0α
                          By CHAoS PRoDUCTiONS
                               
                Coding :-

                    Font Make v5.0 ( SVGA and MCGA ) - Evan Jones
                    SVGA routines                    - David Webb
                    Turbo Font v5.0 unit             - Evan Jones
                    .TFF file format                 - Evan Jones

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Turbo Font v5.0 :-

  Turbon Font v5.0 is a Pascal unit that provides programmers with the
power to use custom fonts in programs.  This version allows the use of
SVGA modes, 640x480x256, 800x600x256, 1024x768x256, to add more support
for game and demo developers.  It provides an easy-to-use interface. The
procedures are easy to understand and are simple to use. By rewriting 
the unit I have increased the speed that fonts are loaded and 
written to the screen. For machines that do not have VESA support I have 
included the old MCGA, 320x200x256, mode.  A lot of work has gone into this 
project and we hope that fellow programmers will appreaciate what we have 
done. Because this unit is designed for programmers to use no registration 
or any other form of money is required to use it.  The source code however 
is available from us at $25 Australian.  Included with this is the source 
code for the unit, the NEW ( colour ) .TFF file format, GFXLib source code 
and several example programs on using the files without the unit.  Also 
if any one has anything to contibute to the project we would like to hear 
from you. Comments, Ideas and gereral chatter are encouraged. We'd like 
to hear you ideas on this unit and know if people are using it. Any bugs or
things that aren't working can also be reported to us. Although we can't
fix every problem.
We thank all of you who use this unit because it was a lot of work for us
and we like to know that what we are producing IS actually being used.

New For v5.0 :-

  We have rewritten the unit completely ( the "We" is because my co-developer
David Webb has decided to help me out on this version ) mainly to speed it
up. Although we still have to speed up the colour font loading. It needs to
be faster.
SVGA modes :-).  We now have support for SVGA modes and have added routines
for switching into the SVGA modes. The MCGA 320x200x256 mode is still 
supported so for those of you who can't or don't want to use SVGA modes you
can still use the old mode.
Font Make v5.0 now a NEW-LOOK version of the old MCGA one.  It has more 
features than the old one but it's not in SVGA because we couldn't get the
mouse working properly.

Future Versions :-

  Hmm.. well at the momment I'm not planning on a new release as such. I
will release updates on v5.0 but these will only be minor things like 
bug fixes and faster routines.
  No Mode-X support. I'm not planning on any Mode-X stuff so for those of
you who want support for it I suggest that you buy the source for the unit
and write the routines to do it yourself.

Functions and Procedures :-

  Function  LoadFont ( FName : String ) : ByteBool;

     Loads a user font into the buffer.  You must load a font
  before using WriteF.  If the font was loaded it returns TRUE.

  Function  LoadFontData ( FPtr : Pointer ) : ByteBool;

    Loads a font from and object file into the buffer. See LINK.PAS.

  Procedure WriteF ( DBG : ByteBool; Str : String; X, Y : Integer; 
                   FG, BG : Byte );

     Writes a string to the screen.  The top left corner of the font
  is displayed at the X, Y cordinate.  If DBG is TRUE then WriteF will
  draw the background colour in the pixels that are set to 0.  FG, BG
  are the foreground and background colours.  The foreground colour is 
  only used in mono fonts.

  Function  SetSVGAMode ( Mode : ModeStruct ) : ByteBool;

     Sets the current video mode from one of the predefined video
  modes.  Returns TRUE if the video mode was changed. See the
  avalible modes below.

  Procedure SetFontPal ( FntPal : FontPal;  Num : Byte );

    Loads the custom palette in to the DAC registers.  Num is
  the number of colours to change. FntPal is usualy the variable
  FPal which contains the palette when the font is loaded.

Types, Variables and Constants :-

  Type
    FontPak               = Record
      FNTFlag             : String[3];
      FontLabel           : String[22];
      ColFlag             : Byte;
    End;
  FontPal               = Array[1..48] Of Byte;

  This type contains info on the current font loaded.

  DEFAULTVIDEO      : ModeStruct = ( 3, 0, 0 );
  MCGA320X200X256   : ModeStruct = ( $13, 320, 200 );
  SVGA640X400X256   : ModeStruct = ( $100, 640, 400 );
  SVGA640X480X256   : ModeStruct = ( $101, 640, 480 );
  SVGA800X600X256   : ModeStruct = ( $103, 800, 600 );
  SVGA1024X768X256  : ModeStruct = ( $105, 1024, 768 );
  SVGA1280X1024X256 : ModeStruct = ( $107, 1280, 1024 );

  The video modes useable by calling SetSVGAMode. 
  
  FPak                  : FontPak;
  FontSet               : FontSetT;

  The variable containg the info on the current font.

Last Words :-

  I hope that this unit will help you.  I would like to ask that our
names be mentioned in you programs if you use this unit but of course
this will never happen.

Greetz :-

  Skaven / FC
  Necr”s / PM,iCE,KLF
  Sonic PC
  Purple Motion / FC

Contact Info :-

  Evan Jones

    Fidonet :  "Evan Jones" at 3:620/262
    E-Mail  :  Evan.Jones@Millenium.Cbr.Fidonet.Org

  David Webb

    Fidonet :  "David Webb" at 3:620/262

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EOF - Written By Evan Jones