Questions tagged [memory-access]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1
vote
1answer
2k views

How a program is copied to RAM from harddisk

I know that for executing a program, it should be copied to RAM. But the problem is whole of it may not be copied always. Since the size of the RAM is limited, there is mechanism called virtual ...
0
votes
1answer
5k views

Dynamic loading vs. dynamic linking?

What is the difference between dynamic loading and dynamic linking? Both systems seem to allow shared libraries, but I am struggling to differentiate between them.
6
votes
3answers
5k views

Finding cache block transfer time in a 3 level memory system

Following question was asked in one of entrance exams for a graduation programme. Please help me try to solve it : A computer system has an L1 cache, an L2 cache, and a main memory unity connected as ...
8
votes
2answers
20k views

Changing from Kernel mode to User mode (and vice versa)

I am reading Operating Systems book by Galvin. Galvin explains, what are kernel & user modes, instruction privileges given for both modes & also about mode-bit. But I am interested to know how ...
4
votes
3answers
5k views

How DMA improves I/O operation efficiency?

I am reading Computer Architecture & Organization by William Stallings to understand I/O operations. Stallings pretty well explains why Programmed I/O (CPU keeps checking the I/O module register ...
1
vote
1answer
533 views

categories of registers and and storage in them

The Wikipedia article on processor registers mentions: Address registers hold addresses and are used by instructions that indirectly access primary memory. Which addresses does this sentence refer ...

1 2 3
4