Prefixing in a multiprocessing system

Details Prefixing in a multiprocessing system Prefixing in a multiprocessing system

1974-04-16

1976-09-21

Springborn, Harvey E.

Communications: electrical

Digital comparator systems

G06F 100

Patent

active

039822311

ABSTRACT:
A shared storage multiprocessing system in which storage is arranged into blocks of storage for storing blocks of data and in which prefixed storage areas for the processors are assigned to predetermined blocks of storage in accordance with different prefix numbers having predetermined values with at least one prefixed storage area being assigned to the zero block of storage. Each of the processors includes a control register which provides the prefix number, an addressing means which provides reference block addresses and prefix logic means which selectively responds to the value of the prefix number and the values of the reference block addresses to provide storage block addresses for addressing the blocks of data in storage. When a referencing processor is to access its assigned prefixed storage area, the processor provides a reference block address equal to zero which when combined by the prefix logic means with the prefix value provided by the control register provides a storage block address equal to the block address of the prefixed storage area assigned to the referencing processor. When the referencing processor is to access the prefix storage area assigned to the zero block of storage, the processor provides a reference block address equal to the prefix value for the referencing processor which when combined by the prefix logic means with the prefix value provided by the control register provides a storage block address having a zero value equal to the block address of the prefixed storage area assigned to the zero block of storage. When the referencing processor provides a reference block address having a value which is greater than zero and not equal to the prefix number, the reference block address is passed in unaltered form by the prefix logic means as the storage block address for addressing a block of storage other than the zero block of storage or the assigned prefixed storage area of the referencing processor.

REFERENCES:
patent: 3505647 (1970-04-01), Torfeh et al.
patent: 3510847 (1970-05-01), Carlson et al.
patent: 3551892 (1970-12-01), Driscoll, Jr.
An application-oriented multiprocessing system--IBM 9020 System, Blakeney et al.; IBM Systems Journal, Vol. 6, No. 2, 1967, pp. 80-94, Armonk, N.Y.

Affiliated with

Also associated with

Rating

Prefixing in a multiprocessing system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Prefixing in a multiprocessing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Prefixing in a multiprocessing system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1416960