INTERNET LINKS

• Compilers
• DJGPP (DOS)
• PACIFIC C (DOS)
• MINGW (Windows 32-Bit)
• NetWide Assembler
• C/C++ libraries
• ALLEGRO (DOS 32-bit, Windows 32-bit, UNIX)
• SPAWNO (DOS 16-bit)
• Open sourced operating systems
• LINUX
• FreeDOS
• Freedows
• Other Open sourced projects
• CUBIC Player
• DOS Navigator
• Open Source DOS Navigator
• Necromancer DOS Navigator
• ODI LFN Tools
• LFNDOS
• Programing information
• PCGPE (PC game programmers encyclopedia)
• Ralf Brown Interrupt List
• Known software with open-source (Non GNU)
• OpenOffice
• DOOM
• QUAKE
• Other Internet links (not related to programming)

Compilers

• DJGPP (DOS)
A port of the UNIX GCC . Works on protected mode, 32-bit, supports LFN, has an IDE with integrated debugger (RHIDE). The company called ID used it to write QUAKE I under DOS. Source available. There is also a port for 16-bit that really needs some work (port notrecommended).
http://www.delorie.com/djgpp


• PACIFIC C (DOS)
A small ANSI C compiler developed by HI-TECH. You can use it freely. No source code. Very bad IDE. No integrated debugger. The standard C library that comes with it is very poor. Just use it to compile programs.
http://www.htsoft.com


• MINGW (Windows 32-Bit)
A minimalist port of GCC to Win32. Source available. Should get great optimization. Very fast compiler. Hard to use for compiling GUI programs. No editor or IDE available (at least not any good one). The Resource Compilerreally sucks. A first C/C++ compiler free on Windows!!!
http://www.mingw.org


• NetWide Assembler
A portable assembler for 80x86 family. Can use OBJ files from Borland compilers, MSVC OBJfiles, LINUXa.oux files, ELF, COFF. Has IDE (NASMIDE ). Full source. Not a stable version yet (V 0.98).
http://www.cryogen.com/Nasm

C/C++ Libraries

• ALLEGRO (DOS 32-bit, Windows 32-bit, UNIX)
A multi platform graphics and sound library. Started for DOS. Version 4 (soon will be released, you can download the beta 3.92), now supports LINUX (X-Windows, and console with SVGALIB ), Windows (using DirectX). Also supports a few compilers: DJGPP (DOS 32-bit), MSVC (Windows 32-bit), WatCom C++ (DOS 32-bit), GCC (Unix). Has great support for a lot of video cards, also a lot of sound cards. Supports 4 bits, 8 bits, 15 bits, 16 bits, 24 bits and 32 bits color palette .X-Mode support. Bitmap loading/saving/writing functions. Plays MIDI, WAV, VOC. AUTODESK Animator FLI playing functions. Read/Write LZSS compression. Mouse/Joystik support. Math function. GUI dialog manager and file selector. Source available. Examples. Has a lot of extension libraries.
http://www.talula.demon.co.uk/allegro/


• SPAWNO (DOS 16-bit)
Swapping replacement for spawn() function. Saves a lot of memory (uses only 200-400 bytes). Very old (almost 10 years). Very easy to use.
http://www.cs.cmu.edu/~ralf/files.html

Open sourced Operating systems

• LINUX
A POSIX wannabe UNIX system. Freely distributed. Very secured. A lot of applications. Hardware support is getting better.
http://www.kernel.org (WWW for the kernel itself)
http://www.linux.org   (Main WWW distribution site)
http://www.debian.org (one fine distribution)



• FreeDOS
This project wants to write a fully DOS compatible operating system. Still beta (beta 5). Has problems with HD. (You cant install it on a disk bigger then 512 MB). No FAT32 support. No LFN support.
http://www.freedos.org


• Freedows
This is a project for writing an operating system which can run program from all other operating systems. You just add a Plug-In(like a web browser) and the new operating system executable runs. No public release yet. Looks dead now. No update more then a year.
http://www.freedows.org

Other Open source projects

• CUBIC PLAYER
The best MOD player in the DOSworld . It plays MODs from any type, cool a lot of sound cards support. Great interface. Text mode (if it was graphics mode app it would word slower).
http://www.cubic.org
There is also an open-source clone of this program found at the same address.


• DOS NAVIGATOR
RIT Labs DOS Navigator is the best shell found for DOS. But RIT Labs do not support it anymore and they published the full source of it (available on the site).
http://www.ritlabs.com
There are also 2 other projects doing a clone for it:
• Open Source DOS Navigator
This is an attempt for writing a OpenSource clone of DN, made totally by amateur programmers. Real good. Supports LFN. Does not crash a lot. Has a disassemble window. Supports all VESA text modes.
http://dn2.da.ru/
http://dnosp.web.com/ (the real name is http://www.nsk.su/~dnosp/)
http://dnosp.id.ru/ (the real name is http://www.hippo.ru/~nelescon/)


• Necromancer DOS Navigator
Yet another clone of DOS Navigator, distributed for free. No source. I like this better, but it crashes more frequently then OSDN. May be next versions will be more stable. Now it works in protected-mode.
http://www.necromancer.newmail.ru/
http://www.shomonopoly.com/arctest
http://sonet.to/members/crush/
http://www.geocities.com/scherbatuk/
http://tpt.tsu.ru/~h_vasya/


• ODI LFN Tools
ODI LFN Tools are some programs that simulate the normal DOS commands (dir, copy, ren etc.) using LFN even on pure DOS. Full source. Stable. Reliable.
http://odi.webjump.com/


• LFNDOS
This program is a TSR that installs into int 0x21 the functions for supporting LFN under pure DOS. Any programs running after that TSR is installed will use LFN (if they support them). I tested RHIDE, 4DOS, MS COMMAND.COM, DOS Navigator and they all worked fine. Messy code. I heard that the program cashes sometimes. Full source. The main problem is that there is no longer support from the author for this software, so there will not be any new releases.
http://members.xoom.com/dosuser

Programming information

• PCGPE (PC game programmers encyclopedia)
PCGPE is a collection of information that helps you programming in DOS. It has information about SVGA (VESA and some video cards setup. X-Mode information. File formats (music and graphics). Graphics special effects. Mouse. Joystick. Memory (XMS, EMS). DOOM techniques. ASM file handling. INTEL opcodes. It also contains ASPHYXIA VGA trainers (most of them). Has a nice interface (TV). Only 1 version was released for DOS. There is also a version explaining stuff about Windows-32 and DirectX.
http://www.geocities.com:0080/SiliconValley/2151/pcgpe.html
http://www.geocities.com:0080/SiliconValley/2151/win95gpe.html   (Windows version - DirectX)


• Ralf Brown Interrupt List
This is the biggest project I know for mapping all the 80x86 interrupts under DOS. Still growing. There are several viewers for this list. NO port known to Linux (is there a reason?)
http://www.cs.cmu.edu/~ralf/files.html

Known software with open-source (Non GNU)

• Open Office
  Since 19-9-2000 SUN declares it's office suit open-source. They will put all the source on the internet for no charge, for developers around the world.
  http://www.oo.org
  

• DOOM
The popular game DOOM has also opened it's source code to the world. You can see how to build a DOOM's world and even change it so it will help you play better. There are a lot of new DOOM engines that give you everything you wanted from this game.
http://www.idsoft.com


• QUAKE
QUAKE has also opened it's source code to the world. Remember that this game was originally made with DJGPP! You can find the source code at (currently even the QII arena can be found there!)
http://www.idsoft.com