| 摘要 |
PURPOSE:To omit the replacement of a common function despite the replacement of the 2nd CPU by using a bus to secure connection between common functions of the 1st and 2nd CPUs. CONSTITUTION:An RAM31 and an I/O 32 are connected to a CPU1 via a bus 3; while an RAM41 and I/O 42 are connected to a CPU2 via a bus 4 and a switch 9. A bus 5 is provided in addition to buses 3 and 4, and these buses are connected to each other via adaptors 6 and 7. Thus no replacement is needed for a trigger 51 a tracer 52, i.e., common functions despite the replacement of the CPU2. |
