Inventor

Douglas B. MacGregor

Inventor

Austin, TX, US

Overview

1984–1991

Patent span

Physics

Primary field (CPC G)

Patents· 23 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G06Fprimary

G06FElectric digital data processing88%

G01RMeasuring electric variables8%

G11CStatic stores4%

PatentTitleYear

5,021,991'Coprocessor instruction format'1991 4,994,961'Coprocessor instruction format'1991 4,914,578'Method and apparatus for interrupting a coprocessor'1990 4,887,203'Microcoded processor executing microroutines with a user specified starting microaddress'1989 4,821,231'Method and apparatus for selectively evaluating an effective address for a coprocessor'1989 4,811,274'Method and apparatus for selectively evaluating an effective address for a coprocessor'1989 4,763,253'Microcomputer with change of flow'1988 4,758,978'Method and apparatus for selectively evaluating an effective address for a coprocessor'1988 4,750,110'Method and apparatus for executing an instruction contingent upon a condition present in another data processor'1988 4,745,574'Microcode testing of PLA\'s in a data processor'1988 4,744,049'Microcode testing of a cache in a data processor'1988 4,731,736'Method and apparatus for coordinating execution of an instruction by a selected coprocessor'1988 4,729,093'Microcomputer which prioritizes instruction prefetch requests and data operand requests'1988 4,729,094'Method and apparatus for coordinating execution of an instruction by a coprocessor'1988 4,715,013'Coprocessor instruction format'1987 4,698,747'Instruction address calculation unit for a microprocessor'1987 4,649,477'Operand size mechanism for control simplification'1987 4,584,640'Method and apparatus for a compare and swap instruction'1986 4,584,666'Method and apparatus for signed and unsigned bounds check'1986 4,566,063'Data processor which can repeat the execution of instruction loops with minimal instruction fetches'1986 4,524,415'Virtual machine data processor'1985 4,493,035'Data processor version validation'1985 4,488,228'Virtual memory data processor'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–1991Patents assigned to MOTOROLA INC (23)· patent assignee history

1984–1991Based in Austin, TX, US· patent location history

1987Based in Kyoto, JP· patent location history

1987Based in Sakyo-ku, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MOTOROLA INC	23	1984–1991

Locations

Location	Patents	Span
Austin, Texas, US	21	1984–1991
Kyoto, JP	1	1987
Sakyo-ku, JP	1	1987