Ngày tải lên :
28/07/2014, 12:21
... 23 2 card from BIOS mov dx,card_base mov dl,0fch mov al,00001011b out dx,al jmp short $ +2 ;set bit mov dl,0fbh in al,dx jmp short $ +2 and al,7fh out dx,al jep short $ +2 in al ,21 h jmp short $ +2 ... jmp short $ +2 and al,0e7h out 21 h,al jmp short $ +2 ;I/o delay ;reenable interrupt sti ret comm_on endp comm_off proc near in al ,21 h or al,18h out 21 h,al jmp short $ +2 ret comm_off endp show_message ... bit',0dh,0ah '2 = bit',0dh,0ah 'Select: $' err1_ms ***',0dh,0ah card_base dw inT_num setup_byte ;Origin O_int_seg dw O_int_off dw db 0dh,0ah,'**" cannot transmit 02f8h db 0ch db 0bbh ;address of RS 23 2 card...