Collect all transfers buffering mechanism utilizing passive release for a multiple bus environment
US5768545A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Jun 11, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4036
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A collection buffering scheme for a computer system having agents of a pre-emptible bus and a non-pre-emptible bus. An agent of the non-pre-emptible bus, having a data width capability of N bits, when receiving a grant to write to the pre-emptible bus, writes instead to a collection buffer capable of holding a block of more than one N bit data segments. When the collection buffer is filled, the collection buffer writes the entire block of data segments over the pre-emptible bus to a CPU or memory of the computer system. Preferably, the collection buffer is filled when the block size is equal to the data width capability of the pre-emptible bus, such that a single write to the pre-emptible bus utilizes the entire capacity of pre-emptible in a given data transaction. Further, where the system has a CPU posting buffer, a system lock-up prevention negotiator is provided that drains and disables the CPU posting buffer during the data transaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.