PSS5000/TEMA/803046/14
PSS 5000 – Technical Manual
2 System Description
to survive a power down for weeks. This data storage area is used for data that
must survive system re-configurations and program changes.
Data in pss_mem/1
Data in memory area 1 is held in a Flash Programmable Read Only Memory
(PROM) and is used to hold programs and system logs as described below:
2.2.3
The Software Components
List of PSS 5000
software components
The software components of the PSS 5000 comprises 3 separate binary pro-
gram blocks. Each block is loaded separately and comes complete with its own
check sum. The blocks are:
•
Boot Program
•
Legal Authority Module (LAM)
•
Application Program
To ease identification of the program blocks, each program is assigned an 8
digit ID, which has the following format:
TTT-BB-VVV
. Where
T
defines the
program type,
B
defines the program branch (or variant) and
V
defines the pro-
gram version.
Boot Program
The Boot Program is responsible for the following functions:
•
Initializing the CPU board
•
Uploading software (which includes various checking functions)
•
Launching the uploaded application program
The Boot Program ID has the program type ID: 499-
BB
-
VVV
Legal Authority Module
(LAM)
The Legal Authority Module (LAM) provides control of parameters that are
subject to control by legal authorities. By installing the correct LAM for the
region, only parameters that are permitted by the authorities are available. The
LAM also provides Weights and Measures functions, which ensure the integ-
Contents of FLASH
Description
APPLICATION PROGRAM
The Application Program holds the main fore-
court controller or converter application. The ap-
plications are specific for the devices connected
to the PSS 5000.
LAM
The Legal Authority Module (LAM) is a parame-
ter module for the Application Program. It holds
country specific parameters like decimal point
settings and parameters to control functionality
required by the local legal authorities. All PSS
5000 applications require a Legal Authority
Module.
BOARD UPLOAD LOG
The Board Upload Log holds a log of all the soft-
ware uploads that have taken place since the
first LAM was installed.
BOOT PROGRAM
The BOOT Program is responsible for software
upload and access to board peripheral devices,
such as the local service panel, when no appli-
cation is present.
