微机原理与接口技术 - 万水书苑-出版资源网

mWrite MACRO text LOCAL string. .data ;;

push cx ; save character count mov si,dx ; point to input buffer dec cx ; save room for null byte L1: mov ah,1 ; function: keyboard input. int 21h ; returns character in AL cmp

 Extend the syntax analyzer into a full-blown compiler that, instead of passive XML code, generates executable VM code.  Two challenges: (a) handling data, and (b)

• tiny (a single segment, used by .com programs), small (one code segment and one data segment), medium (multiple code segments and a single data segment), compact (one code

In this section we define a general model that will encompass both register and variable automata and study its query evaluation problem over graphs. The model is essentially a

mov ax,var1 ;將其中一個記憶體內容先複製到暫存器 xchg ax,var2 ;分別執行記憶體與暫存器內容的交換動作 xchg ax,var1 ;完成交換。 Swap var1

MOV reg,data reg ← data 轉移立即資料(data)到暫存器 reg 內 MOV dreg,sreg dreg ← sreg 轉移暫存器 sreg 的內容到暫存器 dreg MOV segreg,reg segreg ← reg

ƒ 提供 Connection Oriented (連結導向) 並達成End-to- End (兩端通訊端點對端點) Process-to-Process (程序對 程序)、Reliable Data Delivery