Partial duplication of pipelined stack with data integrity checking
US4697233A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1984 |
| Grant date | Sep 29, 1987 |
| Priority date | — |
| Expiry date | Apr 2, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An improved partially duplicated stack structure for ensuring data integrity through a pipelined stack is described. An improved virtual first-in first-out stack structure having a plurality of parallel stacks, each for storing predetermined segments of data signals from a total data word is described in conjunction with one or more associated compare stack structures which are commonly accessed during loading and reading the stack. The compare stack is arranged for storing predetermined selected bit groupings associated with each of the segments of data signals. The bit groupings from the compare stack are compared with like-situated bit groupings from the associated segments of data signals at readout. Failure of the bit-by-bit comparison results in an indication that a stack address decode error has occurred, thereby providing through-checking of the integrity of the functioning of the stack structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.