... chi tap vao bl mov dx,00h out dx,al ;gui byte dia chi thap call delay mov al,21h ; ghi tu lenh DTS(D5),TxEN(D0) de truyen mov dx,01h out dx,21h call delay inc cx ;tang dia chi ... jnz x2 mov dx,00h in al,dx mov dx,cx mov al,m mov bh,al ;nap dia chi cao vao bh out dx,al ;truyen byte dia chi cao call delay mov al,21h * Lưu đồ chương trình nhận dữ liệu. ... Chửụng trỡnh truyen dửừ lieọu. ;chuong trinh truyen du lieu org 70000h mov dx 02h ;dia chi thanh ghi dieu khien mov al,00h out dx,al ;xoa thanh ghi dieu khien call delay out...