|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 提供7个子程序: 1. 关闭文件 FCLOSE 2. 打开文件 FOPEN 3. 文件大小 FSIZE 4. 读文件 FREAD 5. 写文件 FWRITE 6. 建立文件 FCREATE 7. 读取或设置文件指针 FPOS 具体功能及参数描述如下 |----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ; ---------------------------- FCLOSE PROC FAR ; IN: ; AX=FILE NUMBER ; ____________________________ FOPEN PROC FAR ; IN: ; DS:DX=FILE NAME ; AL=OPEN MODE ; OUT: ; CF=0 AX=FILE NUM ; CF=1 AX=ERROR CODE ; ____________________________ FSIZE PROC FAR ; IN: ; AX=FILE NUM ; OUT: ; CF=0 DX:AX=FILE_SIZE ; CF=1 AX=ERROR CODE ; ____________________________ FREAD PROC NEAR ; IN: ; DS:DX=DATA BUFFER ; AX=FILE NUM ; CX=LENGTH ; CF=0 AX=READ SIZE ; CF=1 AX=ERROR CODE ; ____________________________ FWRITE PROC FAR ; IN: ; DS:DX=DATA BUFFER ; AX=FILE NUM ; CX=LENGTH ; OUT: ; CF=0 AX=WRITE SIZE ; CF=1 AX=ERROR CODE ; ____________________________ FCREATE PROC FAR ; IN: ; DS:DX=FILE NAME ; OUT: ; CF=0 AX=FILE NUM ; CF=1 AX=ERROR CODE ; ____________________________ FPOS PROC FAR ; IN: ; AL=MODE ; BX=FILE NUM ; CX:DX=NEW POSITION ; OUT: ; DX:AX=NEW POSITION | ; more source code at http://www.ahjoe.com/source/srcdown.asp PUBLIC FOPEN, FSIZE, FREAD, FWRITE, FCREATE, FPOS, FCLOSE CODE SEGMENT ASSUME CS:CODE FCLOSE PROC FAR ; IN: ; AX=FILE NO. PUSH BX MOV BX, AX MOV AH, 3EH INT 21H POP BX RETF FCLOSE ENDP FOPEN PROC FAR ; IN: ; DS:DX=FILE NAME ; AL=OPEN MODE ; OUT: ; CF=0 AX=FILE NUM ; CF=1 AX=ERROR CODE MOV AH, 3DH INT 21H RETF FOPEN ENDP FSIZE PROC FAR ; IN: ; AX=FILE NUM ; OUT: ; CF=0 DX:AX=FILE_SIZE ; CF=1 AX=ERROR CODE PUSH BX PUSH CX MOV BX, AX MOV AX, 4202H XOR CX, CX MOV DX, CX INT 21H PUSH AX PUSH DX MOV CX, 0 MOV DX, 0 MOV AX, 4200H INT 21H POP DX POP AX POP CX POP BX RETF FSIZE ENDP FREAD PROC NEAR ; IN: ; DS:DX=DATA BUFFER ; AX=FILE NUM ; CX=LENGTH ; OUT: ; CF=0 AX=READ SIZE ; CF=1 AX=ERROR CODE PUSH BX MOV BX, AX MOV AH, 3FH INT 21H POP BX RETF FREAD ENDP FWRITE PROC FAR ; IN: ; DS:DX=DATA BUFFER ; AX=FILE NUM ; CX=LENGTH ; OUT: ; CF=0 AX=WRITE SIZE ; CF=1 AX=ERROR CODE PUSH BX MOV BX, AX MOV AH, 40H INT 21H POP BX RETF FWRITE ENDP FCREATE PROC FAR ; IN: ; DS:DX=FILE NAME ; OUT: ; CF=0 AX=FILE NUM ; CF=1 AX=ERROR CODE MOV CX, 0 MOV AH, 3CH INT 21H RETF FCREATE ENDP FPOS PROC FAR ; IN: ; AL=MODE ; BX=FILE NUM ; CX:DX=NEW POSITION ; OUT: ; DX:AX=NEW POSITION MOV AH,42H INT 21H RETF FPOS ENDP CODE ENDS END FOPEN |
asm汇编源代码之文件操作相关
tjsoft2025-04-13 7:01
相关推荐
碎忆22 分钟前
在VMware中安装虚拟机Ubuntu农民小飞侠25 分钟前
ubuntu 安装pyllama教程技术小甜甜1 小时前
[Dify] 使用 Docker 本地部署 Dify 并集成 Ollama 模型的详细指南学习中的程序媛~2 小时前
主服务器和子服务器之间通过NFS实现文件夹共享长流小哥2 小时前
Linux线程属性与多线程开发：API详解与实战代码解析hi0_62 小时前
Linux 第三讲 --- 基础指令（三）窥见漫天星光-莹2 小时前
fisco-bcos 关于服务bash status.sh启动runing 中但是5002端口监听不到，出错的问题wht65872 小时前
Linux--进程信号cen难取名3 小时前
记一次ubantu搭建vulhub靶场。从docker安装到拉取vulhub靶场一条龙服务文牧之3 小时前
PostgreSQL 的统计信息