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刚学汇编,这段代码 

引用:

assumer cs:abc abc segment   mov ax,2   add ax,ax   add ax,ax   mov ax,4c00h   int 21h   abc ends end

用masm编译产生错误

引用:

Microsoft (R) Macro Assembler Version 5.00 Copyright (C) Microsoft Corp 1981-1985, 1987.  All rights reserved. Source filename [.ASM]: 1 Object filename [1.OBJ]: Source listing  [NUL.LST]: Cross-reference [NUL.CRF]: 1.ASM(1): error A2105: Expected: instruction or directive   50770 + 450110 Bytes symbol space free       0 Warning Errors       1 Severe  Errors

怎么解决

已经解决:assumer多了一个r,丢脸

assume cs:abc  ;这里
abc segment
mov ax,2
add ax,ax
add ax,ax
mov ax,4c00h
int 21h
abc ends
end

呵呵，应该是笔误吧，打快了经常会出这种问题