y1.asm

汇编计数器实例

data segment
x dw 4
y dw 5
z dw ?
data ends
code segment
assume cs:code,ds:data
start:
mov ax,data
mov ds,ax
mov bx,x
mov ax,y
add ax,bx
mov cl,3
sal ax,cl
sub ax,bx
sar ax,1
mov z,ax
mov ah,4ch
int 21h
code ends
end start