Title:
COMMON RESOURCE CONTROL SYSTEM OF MULTIPLE CENTRAL PROCESSING UNIT SYSTEM ETC
Document Type and Number:
Japanese Patent JPS56121168
Kind Code:
A
Abstract:
PURPOSE:To elevate the efficiency of system by selecting the CPU by the common resource and connecting all the inputs/outputs of a data by said CPU and common resource, when the CPU has set request flags. CONSTITUTION:Plural CPU's 1-n and a common resource A such as a central processing unit are connected by the data bus B, and they are constituted so that a data can be transmitted between each CPU1-n and the resource A. Request flags 1-n which are output to the resource A from each CPU1-n, and enable flags 1-n which are sent out to the CPU's 1-n from the resource A, corresponding to said flags 1-n are provided between said each CPU1-n and the resource A. And, when the CPU's 1-n have set the flags 1-n, said CPU's 1-n are selected by the resource A so that both the CPU's 1-n and the resource A can input and output a data, by which the efficiency of system is elevated.
Inventors:
UECHI NOBORU
Application Number:
JP2368580A
Publication Date:
September 22, 1981
Filing Date:
February 27, 1980
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
G06F13/14; G06F9/52; G06F13/16; G06F15/16; G06F15/177; (IPC1-7): G06F3/00; G06F15/16