13 Questions
What are the two main storage entities that a CPU can directly access?
Main memory and registers
What are the typical steps in the instruction execution cycle?
Fetch instruction from memory, decode the instruction, operand fetch, possible storage of result in memory
What are the two types of requests that the memory unit can see?
Address + read requests, address + data and write requests
What is the purpose of a base register and a limit register in memory protection?
To define the boundary of a program in memory and to check that every memory access is within the defined boundary.
At what three different points in time can address binding of instructions and data to memory addresses occur?
Compile time, load time, and execution time.
What is the difference between logical address and physical address?
Logical address is generated by the CPU, while physical address is seen by the memory unit.
What is the purpose of cache in the memory hierarchy?
To sit between main memory and CPU registers, reducing the time taken for memory access.
What is the significance of address binding at execution time?
It allows for the binding of addresses to be delayed until run time, enabling the process to be moved during its execution from one memory segment to another.
How does a program residing on the disk need to be prepared for execution?
It needs to be brought into memory and is usually stored as a binary executable file.
What is the purpose of the base and limit registers in memory protection?
To define the smallest legal physical address of a program and to specify the size of the program, respectively.
How can address binding of instructions and data to memory addresses occur at compile time?
If memory location is known a priori, absolute code can be generated.
What is the concept of logical address space in memory management?
It is the set of all logical addresses generated by a program.
What is the role of hardware support in address maps for memory management?
It is needed for address maps such as base and limit registers, which enforce memory protection and address binding.
Test your knowledge of memory organization, memory-management techniques, and architecture such as Intel Pentium and ARM. Explore topics like paging, segmentation, and contiguous memory allocation.
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