PERFORMING DOWNLOADS
Use of RAM and Flash Memory
106 VX 520 REFERENCE GUIDE
Defragment Flash
For Application
Downloads
Before performing an application download, defragment terminal flash memory.
For information on performing this terminal manager operation, see Verix Terminal
Manager Menu 2.
To ensure the best results when performing back-to-back downloads, defragment
the flash memory of both the sending and receiving terminals. A terminal manager
procedure is also available for clearing the RAM or flash memory, either entirely or
for a specific file group, to prepare a VX 520 terminal for a clean download.
Redirection of Files
During Application
Downloads
You can download application files into RAM or flash memory. By default, files
downloaded to a specific file group are stored in the RAM of that group. To store a
file in the flash memory of that file group, provide instructions to redirect the file to
flash as part of the procedure (see Manually Redirecting Files).
There are two methods used to redirect files during an application download,
depending on the download tool:
• If you are using DMM, you must manually create and include special zero-
length files called SETDRIVE.x and SETGROUP.n on the download computer,
and add these files to the batch download list to direct files to a specific file
system (drive) or file group.
• If you are using DDL.EXE to perform direct downloads, you can use a special
command-line option that automatically redirects files to the drive and file
group you specify.
Both of these methods are described in the following sections.
Manually
Redirecting Files
To manually redirect files for DMM application downloads, create one or more files
on the download computer with the special filename, SETDRIVE.x, where, x is
the name of the partition (memory area) to download files to.
• Partition designator I: is RAM: This is the terminal manager default for
downloads.
• Partition designator F: is flash.
To create a zero-length SETDRIVE file on the download computer, use the DOS
command, REM, as in the following example:
REM >SETDRIVE.F
To redirect a file from the RAM of the target group to the flash memory of the same
file group, insert the zero-length SETDRIVE.F file into the batch of application
files to download. All files that follow the SETDRIVE.F file in the download list
automatically load into the flash memory (F:) of the target group.
The flash defragment operation is not necessary for a VX 520 terminal just out of
the box. In this case, the terminal flash file system is still in factory-new condition.
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