Hey guys !

A few days ago I started working on cmdOS, a command line-based 3rd-party OS. I only do that as a training to improve my ASM skills, so I don't plan any future for it. But hey, who knows ?

I started with SirCmpwn's OS starter kit, which provides LCD and flash set up, RAM unlocking and memory mapping. I also used KnightOS's fontmap and putSpriteOR routine with the agreement of SirCmpwn, but I wrote myself everything else (that means, the text routine, the interpreter, and other functions that you don't see in the screenie below).

So, for now the OS boots on a command-line, which fully supports functions with no arguments so if you can think of one, please tell me.

Here are the functions already available :

• SHUTDOWN : guess its use
• CLS : clear the command-line
• PING : prints "Pong !"
• VERSION : prints cmdOS's version

Of course, screenie :



Also, I don't show it in the screenie because I thought of it just after uploading the image, but the text wraps when you reach the bottom and the right edge of the screen :)

Share comments !

Awesome! I should really look at this OS starter kit thing >.> Would you like some routines for reading strings of numbers so the user can pass arguments? Or are you creating that yourself?

Add a BASIC interpreter

aeTIos : maybe I'll never do that

Xeda112358 : that's what CLS is doing o_O and for the '?' thing, I planned something for arguments when the functions will be programs, so you'll can do command -h.

The supported options will be up to the programmer. Arguments starting with - will be copied to a certain memory area which programs will can access and use easily.

I use IY register to pass buffers to functions. And with this system of flags you can't define your own - prefixed arguments. For example, that would fit if there was a fixed number of allowed - prefixed options.

That's exactly what I'm doing

Update !

After long hours of work, I've finally got backspace erasing working !



You can't imagine how frustrating it was for me