Apparatus using in undifferentiated strobe output to interface either of two incompatible memory access signal types to a memory
US5155839A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1989 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Sep 29, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4239
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A node adapter chip for linking a node microprocessor to a serial data link incorporates a read/write circuit and an interrupt processing means to allow increased flexibility in connecting the adapter to different node microprocessors with different interface protocols. The read/write input circuit accepts dual strobe or single strobe type read/write commands and the interrupt processor accepts either conventional interrupt handling or "polled" operation for use with microprocessors that do not have interrupt capabilities. A flag multiplexer allows the controller in the node adapter to receive status information from a serial interface in the adapter without the need for extra data transfer cycles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.