kb_vid

/*
rm temp.s
touch temp.s
cpp boot.s >> temp.s
as -o boot.o temp.s
ld -o boot.bin --oformat binary boot.o
qemu-system-x86_64 boot.bin
*/


#define vidcall int $0x10
#define kb int $0x16

.code16

.section .data
    .ascii "Hello world"
.section .text
.globl _start

_start:
    movb $0x9,%ah
    movb $0x9,%bl
    movb $1,%cx
    vidcall
    movb $0x0,%ah
    kb
    jmp _start
    cli
    hlt

.fill 510-(.-_start), 1, 0
.word 0xAA55