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infile.asm
Package: cipanduxie.rar [view]
Upload User: hhhhly
Upload Date: 2021-12-31
Package Size: 2k
Code Size: 2k
Category:
Disk Tools
Development Platform:
DOS
- data segment
- file db 'd:masml.txt' , 0 ;文件名
- buf db 256 dup(0) ;文件内容暂存区
- error_message db 0ah , 'error !' , '$' ;出错时的提示
- handle dw ? ;保存文件号
- data ends
- code segment
- assume cs:code , ds:data
- start:
- mov ax , data
- mov ds , ax
- mov dx , offset file
- mov al , 0
- mov ah , 3dh
- int 21h ;打开文件
- jc error ;若打开出错,转error
- mov handle , ax ;保存文件号
- mov bx , ax
- mov cx , 255
- mov dx , offset buf
- mov ah , 3fh
- int 21h ;从文件中读255字节→buf
- jc error ;若读出错,转error
- mov bx , ax ;实际读到的字符数送入bx
- mov buf[bx] , '$' ;在文件结束处放置一“$”符
- mov dx , offset buf
- mov ah , 9
- int 21h ;显示文件内容
- mov bx , handle
- mov ah , 3eh
- int 21h ;关闭文件
- jnc end1 ;若关闭过程无错,转到end1处返回dos
- error:
- mov dx , offset error_message
- mov ah , 9
- int 21h ;显示错误提示
- end1:
- mov ah , 4ch
- int 21h
- code ends
- end start