Microprocessor having function of prefetching instruction
US5938758A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Sep 19, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3802
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A microprocessor having an instruction prefetch function includes a storage circuit in which an instruction externally supplied to the microprocessor via an external interface is stored, a first latch circuit which latches a write address value of the storage circuit in response to an interrupt signal externally supplied to the microprocessor, and an internal interrupt signal outputting circuit which compares a read address value of the storage circuit indicating the instruction stored in the storage circuit with the write address value supplied from the first latch circuit and which generates the internal interrupt signal only when the read address value and the write address value coincide with each other. The microprocessor processes an interrupt process in response to the internal interrupt signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.