It's not uncommon to have RT workloads where the "hard" RT part can fit in a small amount of tightly coupled memory, but the same processor is also used for "so

It's not uncommon to have RT workloads where the "hard" RT part can fit in a small amount of tightly coupled memory, but the same processor is also used for "soft" RT workloads that need a much larger amount of memory. 64-bit addressing makes developing this kind of system a lot easier.