In previous tutorial, we wrote ATA PIO driver.. now it is time to utilize the driver. Before, starting with it.. I have made several changes in the structure, also compile script is no more bat file but rather a powershell script now, output is now stored inside a proper debug folder instead of in root folder. If this tutorial gets […]
In previous tutorial we learnt how we are reducing our kernel size and also using latest GCC compiler and making things better. Our next milestone is to convert our current kernel into a 2nd stage loader and we will develop a new kernel. Why are we doing that? Currently we aare loading our Kernel at 0x1000 memory address. We don’t […]
In previous episode, we learnt about switching to protected mode (32-bit), calling C code from assembly language, reading form hard disk, and accessing video memory to display message on the screen. In this episode, we will create a basic video driver. Which will allow us to keep printing message on the screen by just calling a function, so that we […]
We are going to learn to write a simple boot loader which will boot up our computer and display “Welcome to LearnOS” on screen. Before we start we need to understand what happens when we press a power button of a computer. When we press a power button, power is given to the CPU, and CPU looks for a small […]
Recent Comments