FR2139435A5 - - Google Patents
Info
- Publication number
- FR2139435A5 FR2139435A5 FR7216839A FR7216839A FR2139435A5 FR 2139435 A5 FR2139435 A5 FR 2139435A5 FR 7216839 A FR7216839 A FR 7216839A FR 7216839 A FR7216839 A FR 7216839A FR 2139435 A5 FR2139435 A5 FR 2139435A5
- Authority
- FR
- France
- Prior art keywords
- operands
- processing
- sections
- processor
- results
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/1629—Error detection by comparing the output of redundant processing systems
- G06F11/1641—Error detection by comparing the output of redundant processing systems where the comparison is not performed by the redundant processing components
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Hardware Redundancy (AREA)
Abstract
1380983 Data processing system SIEMENS AG 8 May 1972 [12 May 1971 30 June 1971] 21307/72 Heading G4A A data processing system includes a data processor through which operands are passed in parallel by bit for processing, the processor being divided into two sections and arranged such that operands or parts thereof are fed in parallel by bit through both sections where they are subjected to identical processing and such that the processing results from the two sections are compared in order to indicate the presence of a fault. As described the processor is a 32-bit parallel device. Operands may be half width, 16 bits, or full width, 32 bits. Several modes of operation are described. In the first, with half width operands, the operands are fed through both sections of the processor, the processed results being compared to indicate the presence of faults. In the second, with full width operands, the operands are divided into more and less significant portions which are stored in separate sections of the store As. The less significant portions of two operands A and B, AL and BL, are fed in parallel through the two sections of the processor which comprise registers RS1 and RS2, processing units VE1 and VE2, and output registers ZSP1, ZSP2, a comparator VG serving to compare the processed results. The results are then stored in the store As and a similar procedure adopted for the more significant portions AH and BH. The processing unit has a carry input U which adds carries resulting from the processing of the less significant portion into the more significant portions. If the comparator indicates that no faults have occurred a full width operand is fed through the processing unit, now acting as a single section. In a further mode the test may be completed using only the less significant portion of the operands after which a full width operand is processed. In a further mode of operation in which a full width operand is processed in two halves, the results of processing the two halves are accumulated in the store As so that the test cycle also serves as the processing cycle. All modes of operation may involve several comparators, e.g. placed before and after each unit so that the precise location of the fault may be determined. Storage of the results may be overlapped with the supply of the next operands or operand parts to save time. The Specification states that the processor may be divided into other than only two sections with the appropriate comparators.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712123608 DE2123608A1 (en) | 1971-05-12 | 1971-05-12 | Process for the detection of errors occurring during the transmission and processing of operands and commands of a program within a central processing unit of a computer system |
DE19712132563 DE2132563A1 (en) | 1971-06-30 | 1971-06-30 | METHOD OF DETECTING ERRORS DURING THE TRANSMISSION AND PROCESSING OF OPERANDS OF PROGRAMS WITHIN A CENTRAL UNIT |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2139435A5 true FR2139435A5 (en) | 1973-01-05 |
Family
ID=25761110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7216839A Expired FR2139435A5 (en) | 1971-05-12 | 1972-05-10 |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE783399A (en) |
FR (1) | FR2139435A5 (en) |
GB (1) | GB1380983A (en) |
IT (1) | IT955355B (en) |
LU (1) | LU65325A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0048972A2 (en) * | 1980-09-30 | 1982-04-07 | Computer Gesellschaft Konstanz Mbh | Data processing system with two processing units |
EP0273081A1 (en) * | 1986-12-30 | 1988-07-06 | International Business Machines Corporation | Improved duplicated circuit arrangement for fast transmission and repairability |
-
1972
- 1972-05-08 GB GB2130772A patent/GB1380983A/en not_active Expired
- 1972-05-09 LU LU65325D patent/LU65325A1/xx unknown
- 1972-05-10 FR FR7216839A patent/FR2139435A5/fr not_active Expired
- 1972-05-10 IT IT2413772A patent/IT955355B/en active
- 1972-05-12 BE BE783399A patent/BE783399A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0048972A2 (en) * | 1980-09-30 | 1982-04-07 | Computer Gesellschaft Konstanz Mbh | Data processing system with two processing units |
EP0048972A3 (en) * | 1980-09-30 | 1984-05-23 | Computer Gesellschaft Konstanz Mbh | Data processing system with two processing units |
EP0273081A1 (en) * | 1986-12-30 | 1988-07-06 | International Business Machines Corporation | Improved duplicated circuit arrangement for fast transmission and repairability |
US4856000A (en) * | 1986-12-30 | 1989-08-08 | International Business Machines Corporation | Duplicated circuit arrangement for fast transmission and repairability |
Also Published As
Publication number | Publication date |
---|---|
GB1380983A (en) | 1975-01-22 |
BE783399A (en) | 1972-11-13 |
IT955355B (en) | 1973-09-29 |
LU65325A1 (en) | 1972-08-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |