Title:
BUS CONTROLLING SYSTEM
Document Type and Number:
Japanese Patent JPS5816324
Kind Code:
A
Abstract:
PURPOSE: To realize highly flexible bus control, by allotting plural priorities to each master card which is set in parallel to a common bus and controlled by a bus controlling card.
CONSTITUTION: A bus controlling card BUC, (n) units of master cards MAC and a slave card SLC are connected in parallel to a common bus CB. The card MAC is controlled by the card BUC. Plural priorities of two kinds, for example, are allotted to each card MAC. In an emergency, a bus using request of a higher priority is delivered. While the bus using request of a lower priority is delivered in a normal state. In such a way, highly flexible bus control is possible.
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Inventors:
CHIBA YOSHIHIRO
ISHII KEIJIROU
SHIOTANI SHIGERU
ISHII KEIJIROU
SHIOTANI SHIGERU
Application Number:
JP11438281A
Publication Date:
January 31, 1983
Filing Date:
July 23, 1981
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD
FUJI FACOM SEIGIYO
FUJI FACOM SEIGIYO
International Classes:
G06F9/46; G06F13/362; G06F13/374; (IPC1-7): G06F3/00; G06F9/46
Attorney, Agent or Firm:
Namiki Akio