| Patent | Date |
|---|
Test apparatus for testing a multilevel cache system with graceful degradation capability
Grant 4,686,621 - Keeley , et al. August 11, 1 | 1987-08-11 |
Enable/disable control checking apparatus
Grant 4,667,288 - Keeley , et al. May 19, 1 | 1987-05-19 |
Directory test error mode control apparatus
Grant 4,562,536 - Keeley , et al. December 31, 1 | 1985-12-31 |
Data processor having units carry and tens carry apparatus supporting a decimal multiply operation
Grant 4,484,300 - Negi , et al. November 20, 1 | 1984-11-20 |
Clock system having a stall capability to enable processing of errors
Grant 4,462,072 - Tague , et al. July 24, 1 | 1984-07-24 |
Apparatus for setting the basic clock timing in a data processing system
Grant 4,447,870 - Tague , et al. May 8, 1 | 1984-05-08 |
Data processor using a read only memory for selecting a part of a register into which data is written
Grant 4,423,483 - Tague , et al. December 27, 1 | 1983-12-27 |
Diagnostic testing of the data path in a microprogrammed data processor
Grant 4,410,984 - Negi , et al. October 18, 1 | 1983-10-18 |
Data processor performing a decimal multiply operation using a read only memory
Grant 4,390,961 - Negi , et al. June 28, 1 | 1983-06-28 |
Data processor having carry apparatus supporting a decimal divide operation
Grant 4,384,341 - Tague , et al. May 17, 1 | 1983-05-17 |
Firmware controlled search and verify apparatus and method for a data processing system
Grant 4,384,343 - Morganti , et al. May 17, 1 | 1983-05-17 |
Local bus interface for controlling information transfers between units in a central subsystem
Grant 4,323,967 - Peters , et al. April 6, 1 | 1982-04-06 |
Self-evaluation system for determining the operational integrity of a data processing system
Grant 4,322,846 - Carroll , et al. March 30, 1 | 1982-03-30 |
Apparatus and method for next address generation in a data processing system
Grant 4,309,753 - Negi , et al. January 5, 1 | 1982-01-05 |
Binary coded decimal correction apparatus for use in an arithmetic unit of a data processing unit
Grant 4,245,328 - Negi , et al. January 13, 1 | 1981-01-13 |
Data processing interrupt apparatus having selective suppression control
Grant 4,218,739 - Negi , et al. August 19, 1 | 1980-08-19 |
Data processing system self-test enabling technique
Grant 4,127,768 - Negi , et al. November 28, 1 | 1978-11-28 |
Control store organization in a microprogrammed data processing system
Grant 4,070,703 - Negi January 24, 1 | 1978-01-24 |
Synchronization technique for data transfers over an asynchronous common bus network coupling data processing apparatus
Grant 4,050,097 - Miu , et al. September 20, 1 | 1977-09-20 |
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