Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5021991 | Coprocessor instruction format | Douglas B. MacGregor, John Zolnowsky | 1991-06-04 |
| 4994961 | Coprocessor instruction format | Douglas B. MacGregor, John Zolnowsky | 1991-02-19 |
| 4914578 | Method and apparatus for interrupting a coprocessor | Douglas B. MacGregor, John Zolnowsky | 1990-04-03 |
| 4887203 | Microcoded processor executing microroutines with a user specified starting microaddress | Douglas B. MacGregor, William C. Moyer, John Zolnowsky | 1989-12-12 |
| 4821231 | Method and apparatus for selectively evaluating an effective address for a coprocessor | Michael Cruess, John Zolnowsky, Douglas B. MacGregor | 1989-04-11 |
| 4811274 | Method and apparatus for selectively evaluating an effective address for a coprocessor | Michael Cruess, John Zolnowsky, Douglas B. MacGregor | 1989-03-07 |
| 4763253 | Microcomputer with change of flow | Mark Bluhm, Robert R. Thompson, Douglas B. MacGregor | 1988-08-09 |
| 4758978 | Method and apparatus for selectively evaluating an effective address for a coprocessor | Michael Cruess, John Zolnowsky, Douglas B. MacGregor | 1988-07-19 |
| 4751632 | Data processor having multiple cycle operand cycles | Jay A. Hartvigsen, Robert R. Thompson | 1988-06-14 |
| 4750110 | Method and apparatus for executing an instruction contingent upon a condition present in another data processor | John Zolnowsky, Douglas B. MacGregor | 1988-06-07 |
| 4744049 | Microcode testing of a cache in a data processor | John Kuban, Douglas B. MacGregor, Robert R. Thompson | 1988-05-10 |
| 4731736 | Method and apparatus for coordinating execution of an instruction by a selected coprocessor | Douglas B. MacGregor, John Zolnowsky | 1988-03-15 |
| 4729094 | Method and apparatus for coordinating execution of an instruction by a coprocessor | John Zolnowsky, Douglas B. MacGregor, William C. Moyer | 1988-03-01 |
| 4729093 | Microcomputer which prioritizes instruction prefetch requests and data operand requests | Mark Bluhm, Robert R. Thompson, Douglas B. MacGregor | 1988-03-01 |
| 4715013 | Coprocessor instruction format | Douglas B. MacGregor, John Zolnowsky | 1987-12-22 |
| 4698747 | Instruction address calculation unit for a microprocessor | Robert R. Thompson, Douglas B. MacGregor | 1987-10-06 |
| 4635193 | Data processor having selective breakpoint capability with minimal overhead | William C. Moyer, John Zolnowsky | 1987-01-06 |
| 4633437 | Data processor having dynamic bus sizing | Lester Crudele, James L. Tietjen, Robert R. Thompson | 1986-12-30 |
| 4602327 | Bus master capable of relinquishing bus on request and retrying bus cycle | William P. LaViolette, John Zolnowsky | 1986-07-22 |
| 4584640 | Method and apparatus for a compare and swap instruction | Douglas B. MacGregor, John Zolnowsky | 1986-04-22 |