assume cs:code
data segment
db "Beginner's All-purpose Symbolic Instruction Code.",0
data ends
code segment
start: mov ax,data
mov ds,ax
mov si,0
call letterc
mov ax,4c00h
int 21h
letterc：mov al,ds:[si]
cmp al,0
je s
cmp al,61h
jb s0
cmp al,7ah
ja s0
and al,11011111b
mov ds:[si],al
s0: inc si
jmp near letterc
s: ret
code ends
end start
我的程序错在哪，怎么编译不了啊，请大家指教！ |
