boot and display a string

boot.asm

	mov ax, 0x07c0
	mov ds, ax

	mov si, msg
	call clear
	call zerocursor
	call print
hang:
	jmp hang

zerocursor:
	mov ah, 0x02
	mov bh, 0
	mov dx, 0
	int 0x10
	ret

clear:
	mov ah, 0x06
	mov al, 0
	mov bh, 0xE2
	mov cx, 0
	mov dh, 24
	mov dl, 80
	int 0x10
	ret	

print: ; print a string
	lodsb
	or al, al
	jz done
	mov ah, 0x0E
	int 0x10
	jmp print
done:
	ret

msg db 'Loading GNIX...'	
	times 510-($-$$) db 0
	db 0x55
	db 0xAA

Makefile

all:
	nasm boot.asm -f bin -o boot.bin