帮忙看看这段汇编代码。。老编译不过去。。愁四
代码； 这个很郁闷。。不知道哪错了
assume cs:code

a segment
db 1,2,3,4,5,6,7,8
a ends
b segment
db 1,2,3,4,5,6,7,8
b ends
c segment
db 0,0,0,0,0,0,0,0
c ends
code segment
start:mov ax,a
mov ds,ax
mov ax,b
mov es,ax
mov ax,c
mov ss,ax
mov cx,8
mov bx,0
s:mov al,[bx]
add al,es:[bx]
mov ss:[bx],al
inc bx
loop s
mov 4c00h
int 21h
code ends
end start

编译提示；

Microsoft (R) Macro Assembler Version 5.00
Copyright (C) Microsoft Corp 1981-1985, 1987. All rights reserved.

l:\4.txt(26): error A2056: Immediate mode illegal

50584 + 414504 Bytes symbol space free

0 Warning Errors
1 Severe Errors

C:\DOCUME~1\ADMINI~1>

[解决办法]
c在asm中是key word，所以要改名！！！，另外你mov 4c00h一句没写全:
mov ax,4c00h

Assembly code

assume cs:codea segment  db 1,2,3,4,5,6,7,8a endsb segment  db 1,2,3,4,5,6,7,8b endsc00 segment  db 0,0,0,0,0,0,0,0c00 endscode segmentstart:mov ax,a  mov ds,ax     mov ax,b  mov es,ax     mov ax,c00  mov ss,ax     mov ax,0  mov bx,0  mov cx,8  s:mov al,ds:[bx]  add al,es:[bx]  mov ss:[bx],al  inc bx  loop s     mov ax,4c00h  int 21hcode endsend start