This address space is larger on 64-bit systems, but the basic principles are the same.
This allows a large page to be located in 36 bit address space.
Each program thus has its own address space distinct from all other programs in the system.
Some parts of address space may be not mapped at all.
The 1900 system also allowed any process direct access to the first 4096 words of its address space.
Anyway, I was predicting this before they ran out of address space.
In most systems, the size of a process's virtual address space is much larger than the available main memory.
By design, only a very small fraction of the address space will actually be used.
All address space and name service options should be available to everyone.
The collection of addresses in the network is called the address space.