主题:王爽课后习题看不懂
assume cs:code,ds:data,ss:stack
data segment
dw 0123h,0456h,0789h,0abch,0defh,0fedh,0cbah,0987h
data ends
stack segment
dw 0,0,0,0,0,0,0,0
stack ends
code segment
start:mov ax,stack
mov ss,ax
mov sp,16
mov ax,data
mov ds,ax
push ds:[0]
push ds:[2]
pop ds:[2]
pop ds:[0]
mov ax,4c00h
int 21h
code ends
end start
设程序加载后code段的段地址为X,则data段的段地下为X-2,stack段的段地址为X-1
这个看不懂,为什么data的段地址是X-2?
data segment
dw 0123h,0456h,0789h,0abch,0defh,0fedh,0cbah,0987h
data ends
stack segment
dw 0,0,0,0,0,0,0,0
stack ends
code segment
start:mov ax,stack
mov ss,ax
mov sp,16
mov ax,data
mov ds,ax
push ds:[0]
push ds:[2]
pop ds:[2]
pop ds:[0]
mov ax,4c00h
int 21h
code ends
end start
设程序加载后code段的段地址为X,则data段的段地下为X-2,stack段的段地址为X-1
这个看不懂,为什么data的段地址是X-2?