Title:
SYSTEM PROGRAM LOADING METHOD FOR MULTI-CPU SYSTEM
Document Type and Number:
Japanese Patent JPS63140362
Kind Code:
A
Abstract:
PURPOSE:To require no exchange of a memory by loading a system program for every CPU to an attached local RAM based on a loaded system program by a main CPU. CONSTITUTION:When a power source is charged, the respective CPUs 20-1-20-n simultaneously make access to a shared loading ROM 50, execute a TAS instruc tion, checks and sets a semaphore flag for the FD of a TAS memory 55 only and one of the CPUs 20-1-20-n initially checking can set the semaphore flag for the FD. The CPU 20-2 obtaining the access right to a floppy disk board 60 refers to specific information and corresponding information according to a next reading processing program and loads the system program in the local RAM 30-1 of the main CPU. Thereafter, the system programs for respective CPUs 20-1-20-n are loaded to the local RAMs 30-1-30-n based on the loaded system program.
Inventors:
TANAKA KUNIO
MORIZAKI KAZUHIKO
MORIZAKI KAZUHIKO
Application Number:
JP28652986A
Publication Date:
June 11, 1988
Filing Date:
December 01, 1986
Export Citation:
Assignee:
FANUC LTD
International Classes:
G06F9/445; G06F15/177; (IPC1-7): G06F13/00; G06F15/16
Attorney, Agent or Firm:
Chika Saito