Debug: XA (Allocate Expanded Memory)
Page updated January 21, 2005
Allocates a specified number of pages of expanded memory. Used without parameters, xa checks for the presence or absence of support for Expanded Memory Specification (EMS).
Syntax
xa[Count]
Parameters
Count
Specifies the number of 16-kilobyte pages of
expanded memory to allocate.
?
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.
- Windows XP does not support Expanded Memory Specification (EMS). To use expanded memory, you must install an expanded memory device driver that conforms to version 4.0 of the Lotus/Intel/Microsoft Expanded Memory Specification (LIM EMS).
- If the specified number of pages is available, Debug.exe displays a message indicating the hexadecimal number of the handle that is created. Otherwise, Debug.exe displays an error message.
Examples
To allocate eight pages of expanded memory, type:
xa8
If the command is successful, Debug.exe displays a message similar to the following:
Handle created=0003
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