Microprocessor having function of prefetching instruction

Details Microprocessor having function of prefetching instruction Microprocessor having function of prefetching instruction

1997-09-19

1999-08-17

Maung, Zarni

Electrical computers and digital processing systems: processing

Instruction fetching

Prefetching

712205, 710260, 710261, G06F 1332, G06F 1300

Patent

active

059387580

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.

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