FUCK YOU bootloader

fuckyou.asm

bits 16                         ; 16 bits por favor
org 0x7c00                      ; a bios executa o bootloader em 0x7c00

start:
    mov si, FuckYouString       ; Pointer para FuckYou em SI
    call writeString            ; Imprime String
    jmp start                   ; LOOP FOREVERRRRRRRRRRr

    ;; ---------------------------------------------------

    ;; Interrupt 10H Service 14 : Write Character In Teletype (TTY) Mode
    ;; Writes on character at the current cursor location and advances the cursor.
    ;; Input:
    ;; AH = 0eh
    ;; AL = Character to write
    ;; BL = Foreground color (graphics modes only)
    ;; BH = Display page number (text modes only)
writeCharTTY:
    mov ah, 0x0e                ; Service 14
    mov bl, 0x07                ; Cor do texto
    mov bh, 0x0                 ; Page?
    int 0x10                    ; Interrupt 0x10
    ret                         ; VOLTA!

    ;; ---------------------------------------------------

    ;; Pointer para a string tem que estar em SI
writeString:
nextChar:
    mov al, [si]                ; Letra a imprimir
    inc si                      ; Incrementa Pointer
    OR al, al                   ; Verifica se AL é 0
    jz endString                ; Se for chegamos ao final da string
    call writeCharTTY           ; Imprime letra em AL
    jmp nextChar                ; LOOOOOOOOOOP
endString:
    ret                         ; VOLTA!

    ;; ---------------------------------------------------

FuckYouString db 'FUCK YOU on the bootloader!', 0

    ;; o bootloader tem que ter no maximo 512 bytes e os ultimos
    ;; dois byte têm que ser 0xaa55
times 510 - ($ - $$) db 0       ; encher tudo de zeros até ocupar 510 bytes
DW 0xaa55                       ; adicionar a *signature* de bootloader

Makefile

##
# FUCK YOU on the bootloader
#
# @file
# @version 0.1
# end

main: fuckyou.bin

floppy: main floppy.img

qemu: floppy
	qemu-system-i386 -blockdev driver=file,node-name=f0,filename=floppy.img -device floppy,drive=f0

fuckyou.bin:
	nasm fuckyou.asm -fbin -o fuckyou.bin

floppy.img:
	dd bs=512 count=2880 if=/dev/zero of=floppy.img
	dd if=fuckyou.bin bs=512 of=floppy.img conv=notrunc

clean:
	rm -f fuckyou.bin floppy.img

result.md