PPT Slide
Logical & Physical Memory
- Review: physical addresses on the CRA-1 are used while in system mode so the processor has access to all of memory.
- When in user mode, the processor is limited by the value of base and limit. This is called logical addressing.
- The hardware and operating system create multiple logical address spaces within the single physical address space (Figure 10.27).
- At this point we are still considering the logical address space to be contiguous within physical memory.