Added some documentation

README.md

@@ -7,6 +7,8 @@ Idk why i called it that it was 3am and i needed sleep
 Kern is a 32-bit OS based on the x86 architecture written in NASM Assembly and C. 
 I'm working on a basic command line as well as a custom filesystem (filetable for now).
 
+More info can be found in [The Docs](./docs/main.md)
+
 _Since 32-bit switch, a lot of features have been removed because they were dependent on BIOS interrupts_
 
 ## Usage

docs/main.md

@@ -0,0 +1,45 @@
+# kern.
+
+Kern is a 32-bit x86 based operating system.
+
+What does that mean? 
+Well, 32-bit means that it can access $2^32$ different memory addresses.
+x86 is the processor architecture it is built upon.
+
+## Command Line
+Kern uses a command line (for now), so you'll have to type commands to do stuff.
+It is currently quite simple. It supports these commands:
+
+- clear: Clears the screen
+- echo <msg>: Prints msg to the screen
+- exit: Shuts down the OS ***(QEMU only!)***
+- help: Prints all available commands
+- ls: Prints all files
+- reboot: Reboots the system
+
+You can also print/run files by typing their filename (More in **Filesystem**)
+
+## Filesystem
+Kern has a custom filesystem. This filesystem works as a simple filetable.
+It doesn't support directories at the moment.
+Here's a list of supported filetypes:
+
+| Type | Description | CLI Behaivour |
+| ---- | ----------- | ------------- |
+| .bin | Executable binary | Executes file |
+| .txt | Raw ASCII text file | Prints out file content |
+| .tab | Filetable format | Prints files in filetable |
+| .dat | Data Binary | Prints HEX content of file |
+| .asm | Assembly source code | Prints out file content |
+
+### Filetable format 
+The filetable format (.tab) is a binary file containing
+
+| Byte(s) | Content  |
+| ------- | -------- |
+| 0-9     | Filename |
+| 10-12   | Filetype |
+| 13      | Number of filetable entries |
+| 14      | Starting sector |
+| 15      | File Length (in sectors) |
+