Why does Cortex-R only support most two cores?

Hello,

the main reason fo two cores is to configure the lock-step system for the higher reliability.

One core is used for a master which will operate normally.

Another is used for a checker which compares its output with the master output on condition the common inputs.

Honestly speaking, the ideal configuration is to do a decision by majority by 3 cores.

However, the comparison logic would become more complex with 3 cores.

Actually, 2 core lock-step system is natural thing in the automotive area.

Best regards,

Yasuhiko Koumoto.

Hello,

the main reason fo two cores is to configure the lock-step system for the higher reliability.

One core is used for a master which will operate normally.

Another is used for a checker which compares its output with the master output on condition the common inputs.

Honestly speaking, the ideal configuration is to do a decision by majority by 3 cores.

However, the comparison logic would become more complex with 3 cores.

Actually, 2 core lock-step system is natural thing in the automotive area.

Best regards,

Yasuhiko Koumoto.