Operation; Figure 4-1 Example Of System Configuration; Figure 4-2 Memory Transfer - Hitachi S10mini OD.RING Hardware Manual

4 USER GUIDE

4.1 Operation

The OD.RING module transfers data in a set area of memory from one CPU to another.
CPU-0
CPU-0
Figures 4-1 and 4-2 show memory transfer by each CPU.
Step 1: CPU-0 transfers area A to CPU-1 and CPU-2.
Step 2: CPU-1 transfers area B to CPU-0 and CPU-2.
Step 3: CPU-2 transfers area C to CPU-0 and CPU-1.
Step 4: Areas A through C are being shared by CPU-0 through CPU-2. The OD.RING module
subsequently returns to Step 1 and repeats sharing.

Figure 4-1 Example of System Configuration

A
B
C

Figure 4-2 Memory Transfer

CPU-1
CPU-1
A
B
C
4-2
CPU-2
CPU-2
A
B
C