GE Datex-Ohmeda S/5 - Software Loading; Figure 4 Principle of UPI Section Operation; Figure 5 Software Loading

System description
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Document no. M1137263-04
Figure 4 Principle of UPI section operation
The UPI processor collects and stores all data that is received from the parameter modules into
a dual port RAM, which is mapped directly to the address space of the main CPU. The main CPU
reads data from the memory while the UPI processor guarantees that the data is up to date.
This operation also works in the other direction. In this the main CPU fills the dual port RAM with
data and the UPI processor distributes it to the parameter modules.
2.5 Software loading
The program memory on the CPU board is loaded with monitor software at the factory. The
software is used for running all the functions that are integrated into the PC board. For service
and upgrade procedures,the B-CPU6 board is equipped with Ethernet LAN port through which
new software can be loaded.
Figure 5 Software loading
Module Bus
CPU Bus
UPI Board
Dual-port
RAM
Microcontroller
UPI
Board
CPU
Board
Display
Controller
Board
Program
Memory
CPU Bus
Flash
Service
Software
Ethernet
LAN
Program
Memory
Program
Memory
Softwareloading_cpu6.vsd