Small Fasm OS help

[oslover]

I used to love C, but It seems every were I went I found Fasm boot loaders and kernels
So I'm starting a Fasm boot loader, :wacko: Can anyone help me?

heres what I have so far.

org 0x7C00
use16

start:
        xor   ax,ax
        mov   ds,ax
        mov   es,ax
        mov   ss,ax
        mov   sp,0x7C00

re_loop:
CLS
mes    'P mode not enabled, ',10,5
       'Basic boot loader this is all it does, ',10,5
jmp re_loop

times 510- ($-start)  db 0
dw 0xaa55

[Vista06]

What do you specifically need help with?

Vista

[oslover]

when I go to compile it, It says error illegal instruction! instruction = CLS

[Vista06]

What does "CLS" do in FASM?

(Keep in mind that I haven't used FASM for several years, and I am trying to remember some stuff. :p)

Vista

[oslover]

CLS clears the screen in Fasm, or is supposed to anyway.

[Vista06]

Will it work w/o that instruction?

Vista

[oslover]

Well, It could, but I would get a forever scrolling mess of that text, simply I wanted it to jump back and then clear show the text jump back clear show text. ect. ect.