Pipeline stage single cycle sliding alignment correction of memory read data with integrated data reordering for load and store instructions
US6889311B2 · kind B2 · utility
3Cited by
15References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2002 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Aug 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3636
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Trace data is aligned in a processor having an instruction pipeline by delaying write data and read data a predetermined number of clock cycles, selectively swapping both most significant write data and read data with least significant write data and read dependent upon memory access control data. The write and read data pass normally for even memory bank accesses and are swapped for odd memory bank accesses. Memory access control data, program counter data and program counter control data are similarly delayed. At least the read data and optionally all the data are held upon a pipeline stall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.