- Assembly code
.MODEL TINY 0000 _TEXT SEGMENT USE16 ORG 100H 0100 START: 0100 8C C8 MOV AX,CS 0102 8E D8 MOV DS,AX 0104 B8 0009 MOV AX,09H 0107 BA 010E R MOV DX,OFFSET MSG 010A CD 21 INT 21H 010C EB FE JMP $ 010E 48 45 4C 4C 4F 2C MSG DB "HELLO,WORLD!",'$' 57 4F 52 4C 44 21 24 011B _TEXT ENDS END START
上面是一个.COM格式的小程序的清单文件的一个片断,编译,连接都通过了.完行的时间怎么就是看不到输出结果.是个那INT21H调用的有问题么. 下面是INT21 9号的调用说明,就是向屏幕输出个字串:
- Assembly code
Category: D - DOS kernelInp.: AH = 09h DS:DX -> '$'-terminated stringReturn: AL = 24h (the '$' terminating the string, despite official docs which state that nothing is returned) (at least DOS 2.1-7.0 and NWDOS)Notes: ^C/^Break are checked, and INT 23 is called if either pressed standard output is always the screen under DOS 1.x, but may be redirected under DOS 2+ under the FlashTek X-32 DOS extender, the pointer is in DS:EDXSeeAlso: AH=02h,AH=06h"OUTPUT"Copied from Ralf Brown's Interrupt List
请帮我看下代码,不知道问题出在那?
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明白就好了
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错误都有提示的，楼主可以用debug 单步调试的