US 5,860,130 AGranted

Memory interface apparatus including an address modification unit having an offset table for prestoring a plurality of offsets

AssigneeSharp Kabushiki Kaisha

InventorsHidekazu Yamanaka, Tsuyoshi Muramatsu

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Abstract

A memory interface apparatus includes a plurality of data memories MEMs, and address modification units AMDs and memory access units I/Fs respectively corresponding to the plurality of data memories MEMs. Each address modification unit AMD has an offset table OFT for pre-storing a plurality of offsets, reads an offset from the table OFT based on received second data D2, modifies an address indicated by a received generation number GN using the read offset, and applies a resultant address to a corresponding memory access unit I/F. Each memory access unit I/F accesses a memory MEM based on the applied address, according to a received operation code C. Each result of access is applied in parallel to an operation unit ALU, which in turn performs operation of the applied result according to an operation code C. Thus, operation processing which compounds access to a memory can be carried out, utilizing parallelism in processing sufficiently.

Claims21

Dependent claims

A memory interface apparatus, comprising:

an access unit responsive to reception of a data packet including at least one operation code, an address and data for accessing a plurality of prescribed addresses of a storage unit;
and
a processing unit, wherein
said access unit includes
storage unit address modifying means having a plurality of offset memories for pre-storing a plurality of offsets, and according to one of said at least one operation code in said received data packet, reading said offset from each of said plurality of offset memories based on said data of said received data packet and modifying said address of said received data packet using said plurality of offsets which have been read or modifying said address of said received data packet using said data of said received data packet, and outputting said plurality of prescribed addresses based on a result of said modification, and
storage unit accessing means for accessing, according to said one operation code of said received data packet, said plurality of prescribed addresses of said storage unit output from said storage unit address modifying means, and
said processing unit includes operation means for performing, according to said one operation code of said received data packet, operation of a result of access to said plurality of prescribed addresses by said storage unit accessing means and said data of said received data packet.

4 more elements

Dependencies are inferred from the claim text.