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Patent Searching and Data


Title:
DATA PROCESSING SYSTEM
Document Type and Number:
Japanese Patent JPH0460737
Kind Code:
A
Abstract:

PURPOSE: To shorten data transfer time by connecting memories to buses on a CPU-side or buses on a LAN controller-side through selectors in correspondence with utilization conditions in a data processor relating to LAN.

CONSTITUTION: A data transmission-side consists of CPU 1 connected to the bus 5, a LAN controller 2 connected to the bus 6, the selector 3 switching the buses 5 and 6 and the memory 4 connected to the bus 5 or the bus 6 through the selector 3. When CPU 1 accesses the memory 4, the selector 3 is switched to the bus 5-side, thereby access is available. When the LAN controller 2 accesses the memory 4, the selector 3 is switched to a bus 6-side. Namely, the memories 4 and 11 are connected to two buses 6 and 13 through the selectors 3 and 10 and the data on the memory 4 can directly be transferred to the reception-side memory 11.


Inventors:
FUKUDA YASUSHI
IKEJIMA KIMIO
URUMA KATSUYA
Application Number:
JP1990000171719
Publication Date:
February 26, 1992
Filing Date:
June 28, 1990
Export Citation:
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Assignee:
NEC CORP
NEC NIIGATA LTD
International Classes:
G06F13/00; H04L12/40; (IPC1-7): G06F13/00; H04L12/40