org 0x7c00
push 0x7c0
pop ds
xor si,si
xor bx,bx
mov cx,512
dump:
test cl, 0x1f
jnz showbyte
mov ax,0x0e0d
int 0x10
mov al,0xa
int 0x10
showbyte: lodsb
aam 16
mov dl, ah
hexit:
xchg ax, dx
aam
aad 17
add ax, 0x0e30
int 0x10
xor bl, ah
jnz hexit
loop dump
jmp $
times 510-($-$$) db 0
dw 0xaa55