Modified Harvard architecture processor having data memory...

Information security – Monitoring or scanning of software or data including attack... – Intrusion detection

Reexamination Certificate

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C714S035000, C714S038110

Reexamination Certificate

active

11135527

ABSTRACT:
A processor has an architecture that provides the processing speed advantages of the Harvard architecture, but does not require two separate external memories in order to expand both data memory and program instruction memory. The processor has separate program memory space and data memory space, but provides the capability to map at least a portion of the program memory space to the data memory space. This allows most program instructions that are processed to obtain the speed advantages of simultaneous program instruction and data access. It also allows program memory space and data memory space to be expanded externally to the processor using only one external memory device that includes both program instructions and data. The processor includes a program memory space operable to store program instructions and data, a data memory space operable to store data, and mapping circuitry operable to map at least a portion of the program memory space to the data memory space. The program memory space may be internal to the processor. The processor may further comprise a page register operable to specify a location of the program memory space that is mapped to the data memory space.

REFERENCES:
patent: 3771146 (1973-11-01), Cottton et al.
patent: 3781810 (1973-12-01), Downing
patent: 3886524 (1975-05-01), Appelt
patent: 3930253 (1975-12-01), Maida
patent: 4025771 (1977-05-01), Lynch, Jr. et al.
patent: 4074353 (1978-02-01), Woods et al.
patent: 4090250 (1978-05-01), Carlson et al.
patent: 4323981 (1982-04-01), Nakamura
patent: 4379338 (1983-04-01), Nishitani et al.
patent: 4398244 (1983-08-01), Chu et al.
patent: 4408274 (1983-10-01), Wheatley et al.
patent: 4451885 (1984-05-01), Gerson et al.
patent: 4472788 (1984-09-01), Yamazaki
patent: 4481576 (1984-11-01), Bicknell
patent: 4488252 (1984-12-01), Vassar
patent: 4511990 (1985-04-01), Hagiwara et al.
patent: 4556938 (1985-12-01), Parker et al.
patent: 4615005 (1986-09-01), Maejima et al.
patent: 4626988 (1986-12-01), George
patent: 4709324 (1987-11-01), Kloker
patent: 4730248 (1988-03-01), Watanabe et al.
patent: 4742479 (1988-05-01), Kloker et al.
patent: 4768149 (1988-08-01), Konopik et al.
patent: 4779191 (1988-10-01), Greenblatt
patent: 4782457 (1988-11-01), Cline
patent: 4800524 (1989-01-01), Roesgen
patent: 4807172 (1989-02-01), Nukiyama
patent: 4829420 (1989-05-01), Stahle
patent: 4829460 (1989-05-01), Ito
patent: 4839846 (1989-06-01), Hirose et al.
patent: 4841468 (1989-06-01), Miller et al.
patent: 4872128 (1989-10-01), Shimizu
patent: 4882701 (1989-11-01), Ishii
patent: 4926371 (1990-05-01), Vassilliadis et al.
patent: 4941120 (1990-07-01), Brown et al.
patent: 4943940 (1990-07-01), New
patent: 4945507 (1990-07-01), Ishida et al.
patent: 4959776 (1990-09-01), Deerfield et al.
patent: 4977533 (1990-12-01), Miyabayashi et al.
patent: 4984213 (1991-01-01), Abdoo et al.
patent: 5007020 (1991-04-01), Inskeep
patent: 5012441 (1991-04-01), Retter
patent: 5032986 (1991-07-01), Pathak et al.
patent: 5034887 (1991-07-01), Yasui et al.
patent: 5038310 (1991-08-01), Akagiri et al.
patent: 5040178 (1991-08-01), Lindsay et al.
patent: 5056004 (1991-10-01), Ohde et al.
patent: 5099445 (1992-03-01), Studor et al.
patent: 5101484 (1992-03-01), Kohn
patent: 5117498 (1992-05-01), Miller et al.
patent: 5121431 (1992-06-01), Wiener
patent: 5122981 (1992-06-01), Taniguchi
patent: 5155823 (1992-10-01), Tsue
patent: 5177373 (1993-01-01), Nakamura
patent: 5197023 (1993-03-01), Nakayama
patent: 5197140 (1993-03-01), Balmer
patent: 5206940 (1993-04-01), Murakami et al.
patent: 5212662 (1993-05-01), Cocanougher et al.
patent: 5218239 (1993-06-01), Boomer
patent: 5239654 (1993-08-01), Ing-Simmons et al.
patent: 5276634 (1994-01-01), Suzuki et al.
patent: 5282153 (1994-01-01), Bartkowiak et al.
patent: 5327543 (1994-07-01), Miura et al.
patent: 5327566 (1994-07-01), Forsyth
patent: 5375080 (1994-12-01), Davies
patent: 5379240 (1995-01-01), Byrne
patent: 5386563 (1995-01-01), Thomas
patent: 5392435 (1995-02-01), Masui et al.
patent: 5418976 (1995-05-01), Iida
patent: 5422805 (1995-06-01), McIntyre et al.
patent: 5432943 (1995-07-01), Mitsuishi
patent: 5448703 (1995-09-01), Amini et al.
patent: 5448706 (1995-09-01), Fleming et al.
patent: 5450027 (1995-09-01), Gabara
patent: 5463749 (1995-10-01), Wertheizer et al.
patent: 5469377 (1995-11-01), Amano
patent: 5471600 (1995-11-01), Nakamoto
patent: 5497340 (1996-03-01), Uramoto et al.
patent: 5499380 (1996-03-01), Iwata et al.
patent: 5504916 (1996-04-01), Murakami et al.
patent: 5517436 (1996-05-01), Andreas et al.
patent: 5525874 (1996-06-01), Mallarapu et al.
patent: 5548544 (1996-08-01), Matheny et al.
patent: 5561384 (1996-10-01), Reents et al.
patent: 5561619 (1996-10-01), Watanabe et al.
patent: 5564028 (1996-10-01), Swoboda et al.
patent: 5568380 (1996-10-01), Broadnax et al.
patent: 5568412 (1996-10-01), Han et al.
patent: 5596760 (1997-01-01), Ueda
patent: 5600813 (1997-02-01), Nakagawa et al.
patent: 5611061 (1997-03-01), Yasuda
patent: 5619711 (1997-04-01), Anderson
patent: 5623646 (1997-04-01), Clarke
patent: 5638524 (1997-06-01), Kiuchi et al.
patent: 5642516 (1997-06-01), Hedayat et al.
patent: 5649146 (1997-07-01), Riou
patent: 5651121 (1997-07-01), Davies
patent: 5657484 (1997-08-01), Scarra
patent: 5659700 (1997-08-01), Chen et al.
patent: 5682339 (1997-10-01), Tam
patent: 5689693 (1997-11-01), White
patent: 5694350 (1997-12-01), Wolrich et al.
patent: 5696711 (1997-12-01), Makineni
patent: 5701493 (1997-12-01), Jaggar
patent: 5706460 (1998-01-01), Craig et al.
patent: 5706466 (1998-01-01), Dockser
patent: 5715470 (1998-02-01), Asano et al.
patent: 5737570 (1998-04-01), Koch
patent: 5740095 (1998-04-01), Parant
patent: 5740419 (1998-04-01), Potter
patent: 5740451 (1998-04-01), Muraki et al.
patent: 5748516 (1998-05-01), Goddard et al.
patent: 5748970 (1998-05-01), Miyaji et al.
patent: 5764555 (1998-06-01), McPherson et al.
patent: 5765216 (1998-06-01), Weng et al.
patent: 5765218 (1998-06-01), Ozawa et al.
patent: 5774711 (1998-06-01), Henry et al.
patent: 5778237 (1998-07-01), Yamamoto et al.
patent: 5778416 (1998-07-01), Harrison et al.
patent: 5790443 (1998-08-01), Shen et al.
patent: 5808926 (1998-09-01), Gorshtein et al.
patent: 5812439 (1998-09-01), Hansen
patent: 5812868 (1998-09-01), Moyer et al.
patent: 5815693 (1998-09-01), McDermott et al.
patent: 5825730 (1998-10-01), Nishida et al.
patent: 5826072 (1998-10-01), Knapp et al.
patent: 5826096 (1998-10-01), Baxter
patent: 5828875 (1998-10-01), Halvarsson et al.
patent: 5862065 (1999-01-01), Muthusamy
patent: 5867726 (1999-02-01), Ohsuga et al.
patent: 5875342 (1999-02-01), Temple
patent: 5880984 (1999-03-01), Burchfiel et al.
patent: 5892697 (1999-04-01), Brakefield
patent: 5892699 (1999-04-01), Duncan et al.
patent: 5894428 (1999-04-01), Harada
patent: 5900683 (1999-05-01), Rinehart et al.
patent: 5909385 (1999-06-01), Nishiyama et al.
patent: 5917741 (1999-06-01), Ng
patent: 5918252 (1999-06-01), Chen et al.
patent: 5930159 (1999-07-01), Wong
patent: 5930503 (1999-07-01), Drees
patent: 5936870 (1999-08-01), Im
patent: 5937199 (1999-08-01), Temple
patent: 5938759 (1999-08-01), Kamijo
patent: 5941940 (1999-08-01), Prasad et al.
patent: 5943249 (1999-08-01), Handlogten
patent: 5944816 (1999-08-01), Dutton et al.
patent: 5951627 (1999-09-01), Kiamilev et al.
patent: 5951679 (1999-09-01), Anderson et al.
patent: 5974549 (1999-10-01), Golan
patent: 5978825 (1999-11-01), Divine et al.
patent: 5983333 (1999-11-01), Kolagotla et al.
patent: 5991787 (1999-11-01), Abel et al.
patent: 5991868 (1999-11-01), Kamiyama et al.
patent: 5996067 (1999-11-01), White
patent: 6009454 (1999-12-01), Dummermuth
patent: 6014723 (2000-01-01), Tremblay et al.
patent: 6018757 (2000-01-01), Wong
patent: 6026489 (2000-02-01), Wachi et al.
patent: 6044392 (2000-03-01), Anderson et al.
patent: 6044434 (2000-03-01), Oliver
patent: 6049858 (2000-04-01), Kolagotia et al.
patent: 6055619 (2000-04-01), North et al.
patent: 6058409 (2000-05-01), Kozaki et al.
patent: 6058410 (2000-05-01), Sharangpani
patent: 6058464 (2000-05-01), Taylor
patent: 6061711 (2000-05-01)

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