Symbol-technologies MC3000 User Manual download pdf (Page 113)

Creating/Loading Hex Images 6-19

Making modifications to registry values for drivers loaded before RegMerge is not recommended. However, these values may require

modification during software development. Since these early loading drivers read these keys before RegMerge gets a chance to

change them, the mobile computer must be cold booted. The warm boot does not re-initialize the registry and the early loading driver

reads the new registry values.

Do not use Regmerge to modify built-in driver registry values, or merge the same registry value to two files in the same folder, as the

results are undefined.

CopyFiles

Windows CE expects certain files to be in the Windows folder, residing in volatile storage. Windows CE maintains the System

Registry in volatile storage. CopyFiles copies files from one folder to another on a cold boot. Files can be copied from a non-volatile

partition (Application or Platform) to the Windows or other volatile partition during a cold boot. During a cold boot CopyFiles looks for

files with a .CPY extension in the root of the Platform and Application FFS partitions (Platform first and then Application). These files

are text files containing the source and destination for the desired files to be copied separated by “>”. The following example from

the file application.cpy is contained on the demo application partition included in the DCP for MC3000. It can also be obtained from

the Symbol web site at http://devzone.symbol.com/.

Files are copied to the Windows folder from the Flash File System using copy files (*.cpy) in the following order:

\Platform

\Application

Example:

\Application\ScanSamp2.exe>\Windows\ScanSamp2.exe

This line directs CopyFiles to copy the ScanSamp2.exe application from the \Application folder to the \Windows folder.

Non-FFS Partitions

Non-FFS partitions include additional software and data pre-loaded on the mobile computer that can be upgraded. Unlike FFS

Partitions, these partitions are not visible when the operating system is running. They also contain system information. Non-FFS

partitions include the following:

• Windows CE: The complete Windows CE operating system is stored on Flash devices. If necessary, the entire OS image may

be downloaded to the mobile computer using files provided by Symbol. The current OS partition on the mobile computer is

included as part of the TCM installation package. Any upgrades must be obtained from Symbol. This partition is mandatory

for the mobile computer.

• Splash Screen: a bitmap smaller than 16 Kb (and limited to 8 bits per pixel) is displayed as the mobile computer cold boots.

To download a customized screen to display, see Creating a Splash Screen on page 6-17.

• IPL: This program interfaces with the host computer and allows downloading via cradle or serial cable any or all of the

partitions listed above, as well as updated versions of IPL. Use caution downloading updated IPL versions; incorrect

downloading of an IPL causes permanent damage to the mobile computer. IPL is mandatory for the mobile computer.

• Partition Table: Identifies where each partition is loaded in the mobile computer.

Downloading Partitions to the Mobile Computer

TCM is used to specify a hex destination file for each partition and download each file to the mobile computer. This download requires

a program loader stored on the mobile computer. The mobile computer comes with a program loading utility, Initial Program Loader

(IPL), stored in the mobile computer's write-protected flash.

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Symbol-technologies MC3000 User Manual Page 113