Interrupt handling
Abstract
Abstract A MULTI-UNIT DATA PROCESSING SYSTEM PROVIDES COMMUNICATION BETWEEN THE VARIOUS UNITS BY SETS OF DTA LINES WITH ASSOCIATED CONTROL (TAG) LINES. THE CONTROL LINES CARRY SIGNALS FOR INITIATING, CONTROLLING, MONITORING, AND TERMINATING TRANSMISSIONS OVER THE DATA LINES WHICH MAY CONTAIN BYTES OF DATA OR SETS OF COMMAND SIGNALS. ALL OF THE COMMUNICATION LINKD ARE SYNCHRONOUS, ONE WITH THE OTHER. INTERCONNECTION OF THE UNITS ENABLES A PLURALITY OF UNITS IN A FIRST SET OF SERVICE AND COMMUNICATE WITH ANY ONE UNIT IN A SECOND SET OF UNITS. THE SECOND SET OF UNITS PROVIDES SELECTIVE COMMUNICATION PATHS BETWEEN UNITS IN A FIRST AND THIRD SET. THE THIRD SET UNITS MAY SELECTIVELY PROVIDE INTERRUPT SIGNALS TO ANY ONE OF THE SECOND SET UNITS. THE DISCLOSURE TEACHES TIMING AND LOCKOUT PROVISIONS FOR MULTIPLE INTERRUPT AND MULTIPLE UNIT HANDLING OF A SIGNAL INTERRUPT.
Inventors
- 👤 J Waddell
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |