Contents
What is a logical page?
A logical page is the area on a sheet of paper where all printing occurs. You establish the logical page origin , the point nearest the media origin, with the OFFSET subcommand. The OFFSET subcommand requires two coordinates and might have four.
What is the number of physical pages?
For any virtual address, the high-order bits (e.g., 20 bits) form the page number, and the low-order bits (e.g., 12 bits) form the location within a page. Main memory is also divided into physical pages such that (say) every group of 212 memory words is a physical page.
How do I find my logical address in paging?
Paging is a memory management scheme that eliminates the need for contiguous allocation of physical memory. This scheme permits the physical address space of a process to be non – contiguous. Example: If Logical Address = 31 bit, then Logical Address Space = 231 words = 2 G words (1 G = 230)
How many pages can a process have?
The logical address space is larger than the physical address space, a process can address 232 memory locations that is 232 / 210 = 222 pages. Since the page size is 2^10 , in the virtual address, 10 bits are allocated as offset bits. Since it has 32 bits total, the remaining 22 bits represents the Frame number.
What does a 10 bit physical page number imply?
How many memory pages does the Page Directory occupy? We are told that the Page Directory index is 10 bits, implying 210 = 1024 entries. Each entry occupies 4 bytes, so the total size of the of the Page Directory is 4*210 = 212 bytes, or exactly one page.
What is another name for a logical address?
The logical address is also called virtual address as the logical address does not exist physically in the memory unit. The physical address is a location in the memory unit that can be accessed physically.
Does the preface have a page number?
A: Most front-matter elements, such as a prologue or preface, don’t get numbered as part of the manuscript. If you feel uncomfortable leaving off page numbers in the prologue or you really enjoy toying with Roman numerals, feel free to include all the Is, Vs and Xs you want in your front-matter elements.
What is the maximum number of pages a process can access?
The maximum number of pages in process address space is one million and the total address size (p +d) of process address space is 32- bit with page size is 4096 bytes. Calculate the number of bits required for page number (p) and the number of bits required for offset (d)?
What is the size of logical address?
Logical Address = 24 bits. Logical Address space = 2 ^ 24 bytes.