Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DATA PROCESSOR
Document Type and Number:
Japanese Patent JPH06222990
Kind Code:
A
Abstract:

PURPOSE: To store effective data as much as possible in an instruction cache memory for storing instructions and a data cache memory for storing data, to improve the hit rate of cache memories, to improve entire performance as the data processor and further to dissolve the cache access competition between load instruction and store instruction.

CONSTITUTION: This device is provided with an instruction cache memory 20 for storing instructions, an instruction processing part 21 for requesting the transfer of a required instruction to a storage device in a lower order by the instruction cache memory when the instruction required for the instruction cache memory is not stored, a first transfer instruction data storage means 23 for storing instruction data just by one line portion including the instruction, which is transferred from the low-order storage device by the instruction cache memory, requesting the transfer required for the instruction processing part of the data processor, and a second transfer instruction data storage means 24 higher by one stage to store prefetch instruction data more than one line transferred following one line.


Inventors:
MIYAOKU HITOSHI
SUGA ATSUHIRO
SASAMORI KOICHI
YOSHINO KAZUHIDE
Application Number:
JP28175993A
Publication Date:
August 12, 1994
Filing Date:
October 16, 1993
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
FUJITSU LTD
International Classes:
G06F9/312; G06F9/38; G06F12/08; (IPC1-7): G06F12/08
Attorney, Agent or Firm:
Yoshiyuki Osuge (1 outside)