9.8 Consider a logical-address space of eight pages of 1,024 words each, mapped

Question

9.8    Consider a logical-address space of eight pages of 1,024 words each, mapped onto a physical memory of 32 frames.

a.How many bits are in the logical-address?    

b.How many bits are in the physical address?

9.10Consider a paging system with the page table stored in memory.

a.If a memory reference takes 200 nanoseconds, how long does a paged memory reference take?

b.If we add TLBs, and 75 percent of all page-table references are found in the TLBs, what is the effective memory reference time? (Assume that finding a page-table entry in the TLBs takes zero time, if the entry is there.)

Explanation / Answer

  
Logical Address (P = page number bits)

9.10

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