Appeal No. 2001-1578
Application No. 08/771,550
spaces, one for each task. See page 3 of Appellants'
specification. Figure 4 depicts a high level mapping of entities
in virtual address space of a computer system utilizing a single-
level store architecture. As shown in Figure 4, there is but a
single large virtual address space map 401, and all entities are
mapped into this one space. See page 16 of Appellants'
specification.
Figure 5 depicts a high level mapping of entities in virtual
address space of a computer system utilizing a shared address
space region architecture, according to the preferred embodiment
of Appellants' invention. The SAS region 510 has characteristics
of a single-level stored architecture. As in the case of the
conventional multiple virtual address space architecture of
Figure 3, regions outside of the SAS 510 allow each task to have
its own mapping of identities to the virtual address space,
multiple virtual address space. See pages 17 and 18 of
Appellants' specification. Thus, Appellants' invention has the
advantage of a single-level storage architecture and be
compatible with code written for conventional multiple virtual
address space architecture. See page 19 of Appellants'
specification.
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