What are address spaces?

Some articles on address, address space, address spaces, space:

Burroughs Large Systems Descriptors - Integration in Memory Architecture
... The address field in the B5000 was only 20 bits, which meant that only 1 Meg words (6MB) of memory could be addressed by descriptors ... This architecture became known as ASN (Address Space Number) memory ... allocating low memory addresses to a Global address space for the operating system and support software and high memory addresses to several parallel Local address spaces for individual programs ...
IBM System/370 - Evolution - 1980s
... storage) – both physical memory and virtual address space – to support larger workloads and meet client demands for more storage ... imposed a 24-bit limit for any individual address space) ... provided a number of major enhancements, including expansion of the address space from 24-bits to 31-bits facilitating movement of data between two address spaces and a complete redesign of the I/O ...
Kernel (computing) - Kernel Design Decisions - Issues of Kernel Support For Protection - Hardware-based Protection or Language-based Protection
... isolated from each other by using separate address spaces ... Switching between address spaces is a slow operation that causes a great deal of overhead, and a lot of optimization work is currently performed in ... protection system, as all code can safely operate in the same address space ...
Hybrid Kernel - Examples - NT Kernel - Description
... and hence for the potential location of modules in different address spaces (for example in either kernel space or server processes) ... the entire Executive, run in kernel mode (in the same address space as the microkernel itself), rather than in user-mode server processes, as would be the case with a ... offered by using direct procedure calls in a single memory space, rather than IPC, for communication amongst subsystems ...

Famous quotes containing the words spaces and/or address:

    Surely, we are provided with senses as well fitted to penetrate the spaces of the real, the substantial, the eternal, as these outward are to penetrate the material universe. Veias, Menu, Zoroaster, Socrates, Christ, Shakespeare, Swedenborg,—these are some of our astronomers.
    Henry David Thoreau (1817–1862)

    Another success is the post-office, with its educating energy augmented by cheapness and guarded by a certain religious sentiment in mankind; so that the power of a wafer or a drop of wax or gluten to guard a letter, as it flies over sea over land and comes to its address as if a battalion of artillery brought it, I look upon as a fine meter of civilization.
    Ralph Waldo Emerson (1803–1882)