高分请教WIN98下未公开的INT21H调用

jiaojie 2000-09-05 02:10:00
在我跟踪的一个EXE程序中出现了INT21H的AX=71AAH功能调用,谁能帮我查到这是做什么用的?
...全文
177 2 打赏 收藏 转发到动态 举报
写回复
用AI写文章
2 条回复
切换为时间正序
请发表友善的回复…
发表回复
h_x_k 2000-11-09
  • 打赏
  • 举报
回复
可以参考MSDN里面的帮助
Areslee 2000-09-06
  • 打赏
  • 举报
回复
Category: D - DOS kernel

Inp.:
AX = 71AAh
BH = 00h
BL = drive number (00h = default, 01h = A:, etc.)
DS:DX -> ASCIZ pathname to associate with drive letter
Return: CF clear if successful
CF set on error
AX = error code (see #01657)
7100h if function not supported
SeeAlso: AX=71AAh/BH=01h,AX=71AAh/BH=02h,INT 2F/AX=1000h,#01620
INT 21

Category: D - DOS kernel

Inp.:
AX = 71AAh
BH = 02h
BL = drive number (01h = A:, etc.)
DS:DX -> buffer for ASCIZ pathname associated with drive letter
Return: CF clear if successful
DS:DX buffer filled
CF set on error
AX = error code (see #01657)
7100h if function not supported
Note: the specified drive number may not be 00h (default drive)
SeeAlso: AX=71AAh/BH=00h,AX=71AAh/BH=01h,INT 2F/AX=1000h,#01620

INT 21

Category: D - DOS kernel

Inp.:
AX = 71AAh
BH = 01h
BL = drive number (01h = A:, etc.)
Return: CF clear if successful
CF set on error
AX = error code (see #01657)
7100h if function not supported
Note: the specified drive number may not be 00h (default), and presumably not
the current drive either
SeeAlso: AX=71AAh/BH=00h,AX=71AAh/BH=02h,INT 2F/AX=1000h,#01620
INT 21

Copied from Ralf Brown's Interrupt List

21,453

社区成员

发帖
与我相关
我的任务
社区描述
汇编语言(Assembly Language)是任何一种用于电子计算机、微处理器、微控制器或其他可编程器件的低级语言,亦称为符号语言。
社区管理员
  • 汇编语言
加入社区
  • 近7日
  • 近30日
  • 至今
社区公告
暂无公告

试试用AI创作助手写篇文章吧