Program event recorder and data processing system
US3931611A · kind A · utility
3Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1973 |
| Grant date | Jan 6, 1976 |
| Priority date | — |
| Expiry date | Dec 10, 1993 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3636
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method and apparatus for program event recording in a data processing system and is used, for example, in debugging programs. A program event occurs whenever an address in the data processing system falls within a range between a control lower address (DTCL) and a control upper address (DTCU). The system detects a program event without degrading system performance using carry-lookahead adder structures which implement four inequality relationships.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.