Appeal No. 95-3517
Application 08/203,729
application has not been rejected.2
The invention is directed to a method and apparatus for
extending a personal computer system's addressable physical
memory space in a manner transparent to users of the address
space.
The independent claim 1 is reproduced as follows:
An apparatus for extending the address range of system RAM
beyond the range of physical RAM, comprising:
a central processor, physical RAM having a fixed
address range, and a bus for coupling the central
processor to the physical RAM;
secondary storage coupled to the bus;
address decoder means for determining whether a
read/write request for RAM is beyond the fixed
address range of the physical RAM; and
a secondary storage controller circuit, coupled to
the bus, comprising:
a secondary storage manager to read/write
emulated RAM on the secondary storage; and
control means to determine the location of
emulated RAM on the secondary storage and
control reading and writing of emulated RAM
by the secondary storage manager;
whereby RAM storage addresses beyond the
fixed address range of physical RAM addresses
2We note that on the first page of the final rejection, the Examiner
states that claims 1 through 20 have been rejected. However, on pages 2
through 5 of the final action, claim 7 has not been included in any of the
rejections.
2
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