mov ax,18        ;将18送入AX   AX=18
mov ah,78        ;AH=78
add ax,8        ;AX=AX+8
mov ax,bx        ;AX=BX
add ax,bx        ;AX=AX+BX

mov ax,4E20H
add ax,1406H        ;ax=6226H bx=0000H
mov bx,2000H        ;bx=2000H
add ax,bx                ;ax=ax+bx=8226H
mov bx,ax                ;bx=ax=8226H
add ax,bx                ;ax=ax+bx=1044CH

mov ax,0000H
mov bx,0000H
mov ax,001AH        ;al=1AH ah=00H
mov bx,0026H        ;bl=26H bh=00H
add al,bl                ;al=al+bl=40H ax=0040H
add ah,bl                ;ah=ah+bl=26H ax=2640H
add bh,al                ;bh=bh+al=40H bx=4026H
mov ah,0                ;ah=00H ax=0040H
add al,85H                ;al=al+85H=C5H ax=00C5H
add al,93H                ;al=al+93H=158H        ax=0158H 实际ax=0058H
mov ax,bl

mov al,2        ;al=2 初始化al
add al,al        ;al=4
add al,al        ;al=8
add al,al        ;al=16

mov ax,62627        ;ax=F4A3H
mov ah,31H                ;ax=31A3H
mov al,23H                ;ax=3123H
add ax,ax                ;ax=6246H
mov bx,826CH        ;bx=826CH
mov cx,ax                ;cx=6246H
mov ax,bx                ;ax=826CH
add ax,bx                ;ax=04D8H
mov al,bh                ;ax=0482H
mov ah,bl                ;ax=6C82H
add ah,ah                ;ax=D882H
add al,6                ;ax=D806H
add al,al                ;ax=D80CH
mov ax,cx                ;ax=

mov al,2H
add al,al
add al,al
add al,al

;测试点3.1
;(2)
mov ax,6622H
jmp 0ff0:0100
mov ax,2000
mov ds,ax        ;ds=2000H
mov ax,[8]        ;ax=C189H
mov ax,[2]        ;ax=EA66H

;问题 3.10
mov ax,1000
mov ss,ax
mov sp,2
mov ax,2266
push ax