Inactive-Withdrawn Standard

IEEE 1296-1987

IEEE Standard for a High-Performance Synchronous 32-Bit Bus: MULTIBUS II

This standard describes a high-performance backplane bus intended for use in multiple processor systems. The bus incorporates synchronous, 32-bit multiplexed addreddata, with error detection and uses a 10 MHz bus clock. This design is intended to provide reliable state-of-the-art operation and to allow the implementation of cost-effective high performance VLSI for the bus interface. The standard defines memory, I/O, message, and geographic address spaces. The memory space supports single and block transfers. The message space defines a high-level protocol for transferring blocks of data (messages) as multiple packets of data (small data bursts; e.g., 32 bytes in one microsecond) over the bus. This provides a highperformance (e.g., 32 megabytes/second) interprocessor communication transfers among many different processors on the bus. Error detection and retry is provided for messages. This message passing design also allows a VLSI implementation, such that virtually all modules on the bus will utilize the bus at its highest performance - 32 to 40 megabytes/second. The standard provides geographic addressing for ease of configurability, initialization, and diagnostics.

Sponsor Committee
C/MSC - Microprocessor Standards Committee
Learn More
Inactive-Withdrawn Standard
Board Approval
ANSI Approved:

Working Group Details

IEEE Computer Society
Learn More
Sponsor Committee
C/MSC - Microprocessor Standards Committee
Learn More

Other Activities From This Working Group

Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.

No Active Projects

Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.

No Active Standards

These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.

No Superseded Standards

These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.

No Inactive-Withdrawn Standards

These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.

No Inactive-Reserved Standards

Sign up for our monthly newsletter to learn about new developments, including resources, insights and more.