Digitax 4GMCU, Техническое руководство, Страница: 14 / 64

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14
User and Demo Software
Updates, Backup and Restore
Automatic and semi-automatic procedures have been implemented to update and to keep in a good
state the MCU software. All of them use the DOS layer on system startup.
The MCU, before loading Windows CE, starts running the ROM-DOS
®
operating system. Soon after
the boot procedure, custom applications check if it is required a system update, a data or application
backup and restore. Only after this, Windows CE is loaded.
Important Notes:
ROM-DOS supports long file names, so is not necessary to use DOS 8.3 naming file convention
Hard Disk directory structure
Apps
This folder should be used by the customer programs, for Windows applications and data.
SysApps
This is for system application and utility by Digitax. The customer should not change the content of
this folder
SysBoot
Is used by ROM-DOS® during the start-up procedure. It’s an hidden folder. Do not change its content.
Update
Special folder which have to be used for update and backup, as explained in the following chapter.
The Update folder
It’s becoming evident that there are many interconnections between the System Disk and the Hard
Disk, and the position of every file has a great importance because it changes the way it’s used and
maintained by the system.
The Update folder has been made in order to simplify the work of the user and the custom
developer.
Basically, every file that is copied into the Update folder will be, on next start-up, automatically
copied by the system in the corresponding target folder, both for runtime and for backup, eventually
replacing the already existent one.
After that the Update file is deleted.
The update is automatically managed in different ways depending on the type of file to be updated,
this happens in a way which is transparent for the user, who only have to copy the file in the Update
folder. For example, if the customer wants to update the application named ”myapp.exe” which is in
the APPS folder, he has only to copy the new ”myapp.exe” file into UPDATE\APPS directory.