CipherLab 8000 Gebruikershandleiding - Pagina 6

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3. Software Architecture

The system software of 80x0/80x1 Series Portable Terminal consists of three modules: the kernel &

Application Manager module, the System module and the Application module.

3.1 Kernel & Application Manager

The kernel is the innermost core of the system. It has the highest security and is always protected by

the system. Only the failure of flash memory or improperly power off during system restart after

updating kernel will the kernel be destroyed. The kernel module ensures that users can always

download their application program even the operating system was crashed by the user's program.

The kernel provides the following services:

Information

Information includes hardware version, serial number, manufacturing date, kernel version and

hardware configurations.

Load Program

To download the application program, BASIC run-time or font files.

Update Kernel

Sometimes the kernel might be changed for improving performance or other reasons. This

function allows you to keep the kernel updated. The update procedure is same as download user

program, but note that after updating the kernel, please do not power off until the system restart

itself.

Test / Calibrate

To perform a burn-in test and tune the system clock. This function is for manufacturing purpose

only.

Besides the kernel menu, if there is no application program exists, then upon power up the terminal

the following Application Manager's menu will be shown:

Download

To download application programs (*.SHX), BASIC run-time (BC8000.SHX), BASIC

programs (*.SYN) or font files (8xxx-XX.SHX) to the terminal. There are 6 resident locations

and one Active Memory, i.e. at most 7 programs can be downloaded to the terminal. But only

the one downloaded to the Active Memory will be activated and running. To run other

programs, they need to be activated first, but only one at a time. Right after downloading, you

can input a name for the program or just press the enter key to keep its current name if there is.

And then the downloaded program's type, name and size will be shown on the list when

entering the Download or Activate menu of the Application Manager. The file type is a small

letter follows the program number (01~06), it can be either 'b', 'c' or 'f' which represents

BASIC program, C program or font file respectively. The program name is up to 9 characters

and the program size is in unit of K bytes.

Activate

To copy one of the 6 resident programs to the Active Memory to make it become the active

program. After activating, the original program in the Active Memory will be replaced by the

new one. Note a font file cannot be activated, and a BASIC program cannot be activated either

if the BASIC run-time does not exist.

Upload

To transmit the application programs to a host PC or another terminal. The function allows a