.sect .text; .sect .rom; .sect .data; .sect .bss .sect .text .define .nop .extern printd, printc, hol0 SIO_S = 0xDA SIO_D = 0xD8 RXRDY = 0x02 .nop: mov ax,(hol0) call printd ! movb al,' ' ! call printc ! mov ax,sp ! call printd !1: ! inb SIO_S ! andb al,RXRDY ! jz 1b ! inb SIO_D ! call printc movb al,'\n' jmp printc