entry start start: mov ah,#0x03 ; read cursor position. xor bh,bh int 0x10 mov cx,#26 ; length of our beautiful string. mov bx,#0x0007 ; page 0, attribute 7 (normal) mov bp,#mymsg mov ax,#0x1301 ; write string, move cursor int 0x10 loop1: jmp loop1 mymsg: .byte 13,10 .ascii "Handling BIOS interrupts"