汇编逻辑运算和位移运算例题

data segment
    x db 55h,77h,14 dup (?)
    y dw 0ff00h,1234h,8 dup (?)
data ends
code segment
    assume cs:code,ds:data
    start:
        mov ax,data
        mov ds,ax
        ;字节操作
        mov al,x
        and al,x+1
        mov x+2,al

        mov al,x
        or al,x+1
        mov x+3,al

        mov al,x
        not al
        mov x+4,al

        mov al,x+1
        not al
        mov x+5,al

        mov al,x
        xor al,x+1
        mov x+6,al

        mov al,x
        shl al,1
        mov x+7,al

        mov al,x
        shr al,1
        mov x+8,al

        mov al,x+1
        mov cl,4
        shl al,cl
        mov x+9,al

        mov al,x+1
        shr al,cl
        mov x+10,al

        mov al,x
        rol al,1
        mov x+11,al

        mov al,x
        ror al,1
        mov x+12,al

        mov al,x+1
        mov cl,4
        rol al,cl
        mov x+13,al

        mov al,x+1
        ror al,cl
        mov x+14,al
        ;字操作
        mov ax,y
        and ax,y+2
        mov y+4,ax

        mov ax,y
        or ax,y+2
        mov y+6,ax

        mov ax,y
        xor ax,y+2
        mov y+8,ax

        mov ax,y
        mov cl,4
        sar ax,cl
        mov y+10,ax

        mov ax,y+2
        sar ax,cl
        mov y+12,ax

        mov ax,y
        mov dx,y+2
        mov cl,8
        rol ax,cl
        rol dx,cl
        mov cx,ax
        mov bx,dx
        and cx,00ffh
        and bx,00ffh
        and ax,0ff00h
        and dx,0ff00h
        or dx,cx
        or ax,bx
        mov ax,y+14
        mov dx,y+16
        mov al,4ch
        int 21h
    code ends
end start

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