firmware.s

.text
# starts @ 0xF0000 (0xF000:0x0000)

.code16

.global _start
_start:
        mov $0x2000, %ax
        mov %ax, %ds
        mov %ax, %es
jumper:
        mov  %al, 0x00
        inc  %al
        jmp jumper

.section .entry, "ax"
# starts @ 0xFFFF0 (0xFFFF:0x0000)

.global _entry
_entry:
    ljmp $0xf000, $0x0000
.string "27/12/2013"
.org    0x10