IPC Over Multibus-I for a QMR System

Pedar, A and Jayanthi, J and Jyothi, N and Prasad, Renuka (1992) IPC Over Multibus-I for a QMR System. Technical Report. National Aerospace Laboratories, Bangalore, India.

Full text available as:
[img] PDF
Restricted to Archive staff only

Download (9Mb)


    The project Quadruple Redundant Fault Tolerant Computer System aims to develop expertise in the field of fault tolerant computing and development of highly reliable computing system by developing a benchtop model. The prototype system consists of four single board computers based on F9450A processors (Mil Std. Spec., 1750A13; Architecture) placed on the Multibus chassis. The four boards operate in Triple Modular Redundancy with comparison (TMR) with fourth one being a standby. Each board executes the same application task. For the purpose of voting, each board communicates its result to other boards. This requires interprocessor communication facility13; The F9450A board supports dual port RAM logic. RAM on each board is shared by other boards. The RAM on each board is assigned a Multibus Address. Communication is possible over the Multibus-I by means of this assigned multibus address. Modifications have been made in the hardware to enhance the addressing capability of the board from 64K to 1 megaword without actually using the memory management unit. A software package has been written in macro50 assembly language to accomplish the interprocessor communication facility.13;

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: Interprocessor communication;Dual port RAM;Fault tolerant computer system;SBC-50;MMU;Multibus-I;Memory architecture
    Subjects: MATHEMATICAL AND COMPUTER SCIENCES > Computer Operations and Hardware
    Division/Department: Aerospace Electronics and Controls Division, Aerospace Electronics and Controls Division, Aerospace Electronics and Controls Division, Aerospace Electronics and Controls Division
    Depositing User: Mr. Ravikumar R
    Date Deposited: 02 Jun 2006
    Last Modified: 24 May 2010 09:43
    URI: http://nal-ir.nal.res.in/id/eprint/1710

    Actions (login required)

    View Item