Patent US3564506A successfully refreshed from Google Patents.
US3564506A
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US
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Instruction retry byte counter
Assignee: International Business Machines Corp
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Filing: 1968-01-17
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Granted: 1971-02-16
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Expires: 1988-01-17
Abstract
Abstract DISCLOSED IS A DATA PROCESSING SYSTEM WHICH UPON DETECTION OF ERROR DURING THE EXECUTION OF AN INSTRUCTION RETRIES THE INSTRUCTION. UPON DETECTION OF ERROR, THE DATA PROCESSING SYSTEM ENTERS A RETRY MODE OF OPERATION AND RETRYS THE PREVIOSULY UNSUCCESSFULLY COMPLETED INSTRUCTION STARTING WITH THE LAST SUCCESSFULLY COMPLETED STEP AS INDICATED BY A COUNTER WHICH COUNTS THE NUMBER OF SUCCESSFULLY COMPLETED STEPS. UPON ENTERING THE RETRY MODE, THE COUNT IN THE RETRY COUNTER IS USED TO UPDATE THE ADDRESSES AND OPERAND LENGTH INDICATORS THEREBY MODIFYING THE RETRY EXECUTION AND TAKING ADVANTAGE OF PREVISOULY ERROR-FREE CALCULATIONS.
Inventors
- 👤 Mark W Bee
- 👤 Donald J Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:20
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/30; G06F11/34; G06F11/07; G06F11/14; G06F11/1402; G06F11/1405; G06F11/141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |