How can I create foreign letters in DOS?

This is a discussion on How can I create foreign letters in DOS? within the C++ Programming forums, part of the General Programming Boards category; How would I create umlauts or accents in DOS?...

  1. #1
    1.b4 e5 2.a3 d5 3.d4 exd
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    How can I create foreign letters in DOS?

    How would I create umlauts or accents in DOS?
    AIM: MarderIII

  2. #2
    Just because ygfperson's Avatar
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    Umlauts and accents are sure to be there. I wouldn't hold my breath for the Euro, though.

  3. #3
    Normal vector Carlos's Avatar
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    Hold on, there's always a hope :)
    Using some nice (forgotten?) techniques, you can replace EGA/VGA ROM character sets with your own ones.

    The easiest way is to use int10h Character generator function 11h and it's subfunctions.

    Here is a small assembly snippet from one of my old programs. Assuming you use EGA/VGA textmodes :), it will do what you need:

    Code:
    push bx
    push cx
    push es
    push bp // save registers
    
     mov bp, offset fnt  // set bp to point to your character table
      mov bx,cs   
      mov es,bx   // es points to the code segment
      mov bh,16   // height oof each character
      mov cx,100h // number of characters to redefine (256 - all!)
      xor dx,dx     // ASCII code of the first char to be redefined
      xor bl,bl       // font block to load
      mov ax,1110h // function 11h subfunc. 10h
      int 10h            // video services
    
    pop bp  // restore registers
    pop es
    pop cx
    pop bx
    
    // the user defined font table - 
    // there are several freeware tools to create your own VGA fonts
    fnt        dw      9 dup (0)
                db       7Eh, 81h,0A5h, 81h, 81h,0BDh
    ...
    Well, I won't copy-paste the full character table here, if you're interested, check e.g. my sysinfo program (pressing TAB will change the fonts, just run it in pure DOS or full-screen window if run in a DOS box[/B]).

    Source and binaries also available.
    If you need more information about BIOS video functions, check Ralph Browns Interrupt List. Great work!

    Have fun!

    ASM rules!

  4. #4
    Programming is fun, mkay?
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    Lightbulb ALT key codes is what you need...

    Well, if you mean things like this '' then you hold ALT, press any 3 or 4 number combination (one after the other) on the right keypad on your keyboard (where it has Enter, +, -, *, /, Num Lock, etc.) and let go of ALT. You can find the different key codes on the web. You can do stuff like '' '', '', '', etc. also. Try a Google search for ALT key codes. I hope this helps =)!!
    Website(s): http://www16.brinkster.com/trifaze/

    E-mail: trifaze_mattu@lycos.com

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  5. #5
    I lurk
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    If you're using a Win32 Console, there's always unicode. It involves much more than I care to explain here, so have a look on google about using unicode in your C/C++ applications.

  6. #6
    Normal vector Carlos's Avatar
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    The original question was
    How would I create umlauts or accents in DOS?
    ..and, as this is a site for programmers, I tried to show how one can create characters in DOS.

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