ThinkCore V481 WinCE User’s Manual
Introduction
1-7
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Video Codecs and Renderers—
Provides the following Codecs
DirectShow Video Codec
MPEG-I Video Codec
MS RLE Video Codec
Overlay Mixer
Video/Image Compression Manager
EMA/MEPG-4 Video Codec
How to Determine the Firmware Build Version
There are two ways to determine the firmware version of the V481 embedded computer. This
information is important for identifying which features are supported.
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Look at the welcome message after you log on to the computer.
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Execute the “System Manager” application (described in a later chapter) to view the system
information.
Memory and File Systems
The 256 MB of SDRAM is divided into the main memory, which uses about 196 MB of space and
includes the operating system and user applications, and the kernel image, which occupies the rest
of the space.
The V481’s internal file system controls access to CF flash and also provides file storage in the
object store. The file system provides persistent storage for applications and their related data even
when the main power supply is lost. The file system integrates the read-only files that are stored in
Flash ROM, with the read/write files of both applications and users.
The system provides 1 MB of RAM-based storage under the RAMDisk directory. Although data
saved in RAM will be deleted when the system shuts down, RAM storage has the advantages of
faster read/write access and no life cycle. For applications that require transmitting important data
immediately and directly to a host, you can store the necessary log data in RAM. After the host
receives the data, the data does not need to be retained and can be deleted.
Since embedded computers have resource limits, integrators must store data wisely. In general,
you should only store data when you need to, and you should be sure to use the most appropriate
storage medium.
Additional file systems for USB storage devices are placed at the root of the internal file system. If
you intend to use the devices to port data between your PC and the V481 computer, you should
format them as the FAT file system on your PC. These devices need to be formatted as
FAT .Otherwise, the V481 computer may not recognize the NTFS or any other format.
Hive-Based Registry
The registry for the V481 is a hive-based registry, instead of a RAM-based registry. The
hive-based registry stores registry data inside files, or hives, which can be kept on file system. This
removes the need for performing backup and restore on power off. The registry data is stored in
the “\ Registry” directory.
