Question

读取某个路径的TXT文件内容，然后照着读取出来的内容打出来，用汇编语言编写，急急急急！在线等

Answer 1

        CODE  SEGMENT
              ASSUME    CS:CODE

     FILESTR  DB        'c:\masm\file.asm',0
      HANDLE  DW        0
         BUF  DB        100 DUP(0)
     ERRMSG1  DB        13,10,'file operation error 1! $'
     ERRMSG2  DB        13,10,'file operation error 2! $'
     ERRMSG3  DB        13,10,'file operation error 3! $'

      START:  PUSH      CS
              POP       DS
              PUSH      CS
              POP       ES

              MOV       AH,3DH      ; 打开文件
              LEA       DX,FILESTR
              MOV       AL,0
              INT       21H
              JC        @ERROR1
              MOV       HANDLE,AX

        @M0:
              MOV       AH,3FH      ; 单字节读文件
              MOV       BX,HANDLE
              MOV       CX,1
              LEA       DX,BUF
              INT       21H
              JC        @ERROR2     ;;;;;;
              CMP       AX,1
              JNE       @FILEEND
              MOV       AH,2
              MOV       DL,BUF[0]
              INT       21H
              JMP       @M0

   @FILEEND:
              MOV       AH,3EH      ; 关闭文件
              MOV       BX,HANDLE
              INT       21H
              JC        @ERROR3

      @EXIT:
              MOV       AH,4CH
              INT       21H

    @ERROR1:
              MOV       AH,9
              LEA       DX,ERRMSG1
              INT       21H
              JMP       @EXIT
    @ERROR2:
              MOV       AH,9
              LEA       DX,ERRMSG2
              INT       21H
              JMP       @EXIT
    @ERROR3:
              MOV       AH,9
              LEA       DX,ERRMSG3
              INT       21H
              JMP       @EXIT

        CODE  ENDS
              END       START

Answer 2

;需要事先在D:盘根目录下建立一个文件TEST.TXT

DSEG SEGMENT
;数据段：在此处添加程序所需的数据
PATHNM1 DB 'D:/TEST.TXT'
BUFFER1 DB 100 DUP (?)
DSEG ENDS
SSEG SEGMENT 'stack'
dw 100h dup(0)
SSEG ENDS

CSEG SEGMENT
assume cs:CSEG, ds:DSEG, ss:SSEG
START: mov ax, dseg
mov ds, ax

;打开文件TEST.TXT
MOV AH,3DH
LEA DX,PATHNM1
MOV AL,2
INT 21H

;读取文件内容，存入BUFFER1
LEA DX,BUFFER1
MOV BX,AX
MOV CX,100
MOV AH,3FH
INT 21H

;显示BUFFER1中的内容
MOV CX,AX
LEA SI,BUFFER1
NEXT:
MOV DL,[SI]
MOV AH,2
INT 21H
INC SI
LOOP NEXT

;关闭文件
MOV AH,3EH
INT 21H

;按任意键退出
mov ah,1
int 21h

mov ax, 4c00h ;程序结束，返回到操作系统系统
int 21h
CSEG ENDS
END START