中国科学院21H条(0x15或0x21)函数第15(21)书写顺序消减中时约为16小时(0x16或0x1722)形成档案颁授(或23)反应18h更名档案(0x18或0x19或24)预留b/(25)获得当前盘1ah(0x1a或26或0x1b)订避免双重课税address1bh(27)获得缺省数据驱动

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中国科学院21H条(0x21)

函数第15(0x15或21)-->写序

Call with: AH = 15H
DS: DX = segment: offset of previously opened
file control block

Returns: AL = 00H, if write successful
01H, if disk is file
02H, if segment wrap

Comments:

这项功能块写数据时序进入下一档案,那么档案教鞭适度递增. 多少字节的数据必须由指定的书面记录大小场(抵消0eh)档案控制块(循环流化床).


中国科学院21H条(0x21)

功能消减中时约为16小时(或220x16)-->创造档案

Call with: AH = 16H
DS: DX = segment: offset of unopened file control block

Returns: If function is successful and file was created or truncated
AL = 00H
And FCB filled in by MS-DOS as follows:

Drive field (offset 00H) = 1 for drive A, 2 for drive B, etc.     
Current block field (offset0CH) = 00H
Record size field (offset 0EH) = 0080H
Size field (offset 10H) = file size from directory
Date field (offset 14H) = date stamp from directory
Time field (offset 16H = time stamp from directory

If function unsuccessful (directory full)
AL = FFH

Comments:

这项功能新增目录,在当前目录或进行截入任何现存档案与同名为零长度.随后又打开阅读档案/写运行. 这项功能必须谨慎使用,因为现有的档案与零长度截短指定的名字和所有档案资料,已无法挽回.

 

中国科学院21H条(0x21)

功能一名(0x17或23)-->文件更名

Call with: AH = 17H
DS: DX = segment: offset of special file control block

Returns: If function is successful and one or more files renamed
AL = 00H

如果函数不成功,没有匹配的档案,档案现有或新filename=050535.htm匹配
AL = FFH

Comments:

这项功能的名称改变,在目前所有匹配档案目录的磁盘驱动的特定.

您也可以利用野卡.档案管理特别是建设有座典filename=050535.htm,在平时的位置和延长(0字节透过0bh)和第二filename=050535.htm6字节出发后的第一(11小时32抵消).

 

中国科学院21H条(0x21)

功能反应18h(或240x18)-->预留

中国科学院21H条(0x21)

功能b/(0x19或25)-->获得本届磁盘

Call with: AH = 19H

Returns: AL = drive code (0 for A drive, 1 for B
drive etc.)

Comments:

这项功能的效益驱动行为或过失当前磁盘驱动.

 

中国科学院21H条(0x21)

功能1ah(0x1a或26)-->确定解决双重课税

Call with: AH = 1AH
DS: DX = segment: offset of disk transfer area.

Returns: Nothing

Comments:
这项功能的具体地址磁盘转移区(双重课税)用作随后循环流化床相关功能的电话.

中国科学院21H条(0x21)

1bh功能(或270x1b)-->得到违约径数据

Call with: AH = 1BH

Returns: If function successful
AL = sectors per cluster
DS: DX = segment offset of media ID byte
CX = size of physical sector in bytes
DX = number of clusters for default drive

If function unsuccessful (invalid drive or critical error)
AL = FFH

Comments:

这项功能得到的资料选定磁盘驱动器、违约向媒体指鉴定字节从其档案配置表.

媒体字节身分具有以下意义:

Media Descriptor ID

Medium

0F0H

3.5-inch Floppy Disk, double-sided, 18 sectors (or other)

0F8H

fixed disk

0F9H

5.25-inch Floppy Disk, double-sided, 15 sectors

0F9H

3.5-inch Floppy Disk, double-sided, 9 sectors

0FCH

5.25-inch Floppy Disk, single-sided, 9 sectors

0FDH

5.25-inch Floppy Disk, double-sided, 9 sectors

0FDH

8-inch Floppy Disk, single sided, single density

0FEH

5.25-inch Floppy Disk, single-sided, 8 sectors

0FEH

8-inch Floppy Disk, Single Sided, Single Density

0FEH

8-inch Floppy Disk, Double Sided, Double Density

0FFH

5.25-inch Floppy Disk, double-sided, 8 sectors


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Data Recovery with & without Programming


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Number of Pages
ISBN
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BPB Publications, New Delhi, India
540
81-7656-922-4
$69.00 (Including Shipping Charges, Cost of Book and Other expenses, Free Source Code CD included with the Book)





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