Debug: F (Fill)

Page updated January 21, 2005

Fills addresses in the specified memory area with values you specify.

Syntax

f Range List

Parameters

Range

Required. Specifies the starting and ending addresses, or the starting address and length, of the memory area you want to fill.

List

Required. Specifies the data you want to enter.

Displays a list of debug subcommands.

Remarks

Windows XP and the Windows Server 2003 family of products do not use this command. It is included only to preserve compatibility with existing MS-DOS files, but it has no effect at the command line because the functionality is automatic.
Specifying valid Range entries

Use Range with a debug subcommand to specify a range of memory. You can choose one of the following formats for Range: a starting address and an ending address, or a starting address and the length (denoted by l) of the range. For example, both of the following syntaxes specify a 16-byte range beginning at CS:100:

cs:100 10f

cs:100 l 10
Specifying data
You can specify data in either hexadecimal or ASCII format. Any data you previously stored at the specified address is lost
Using List

List can consist of hexadecimal numbers or a string enclosed in quotation marks (that is, "String").

Examples

To fill memory locations 04BA:100 through 04BA:1FF with five specific values (for example, 42, 45, 52, 54, 41) and repeat the five values until Debug.exe fills all of the 100h bytes, type:

f04ba:100l100 42 45 52 54 41

Formatting legend

Format	Meaning
Italic	Information that the user must supply
Bold	Elements that the user must type exactly as shown
Ellipsis (...)	Parameter that can be repeated several times in a command line
Between brackets ([])	Optional items
Between braces ({}); choices separated by pipe (\|). Example: {even\|odd}	Set of choices from which the user must choose only one
Courier font	Code or program output

Some of these terms may be the same or similar to DOS commands. For information on DOS Commands, click here

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