This is 32-bit operating system for x86 cpu architecture written using C and NASM. The main aim of this system was to be able to run programs which could be written by any user and which would be stored on the hard disk.
This operating system could probably run on any hardware however, it has only been tested with qemu. To use it you can execute the run script:
./run
The only thing that appears after booting is the terminal. It has two built-in commands:
help- lists all the programs that have been correctly loaded from the disk.info- lists the physical addresses of the system functions available to the programmer for use in their program.
In addition, all the programs listed under the help command can be run using their names.
For now, the only way to write a program is to use NASM in [32 BITS] mode. The next limitation is that you can't use data/variables because the system only supports the code section of the program. If you want to call a system function, you have to do it by calling it by its physical address (can be found within the info command). Compile the assemlby code using
nasm -f bin
To install the program, you must also prepare an 8-byte binary file containing the name of it. In the programs/names directory there is a simple program called exp. It exports your name to this binary file (the program name must be given as an argument).
The process of installing the programs is performed using the programs/install script. If you want to install your program, you have to edit this file and insert two dd commands (before end_mark) - one with your program name (exported binary file) and the second with its binary code.
After booting up the system your program should be listed under the help command.
The system is compiled using the i686-elf cross-compiler and nasm. The compilation of the source code is set in the Makefile. The entire build process (with the installation of programs) can be handled using
./build.sh