Modular Microprocessor Implementation


OMI/MMI - 6258

Keywords microprocessor integration, MIPS, R3000, R4000, workstations


Start Date: 01-OCT-92 / Duration: 30 months

[ contact / participants ]


Objectives

The MMI project is based on the MIPS reduced instruction set architecture (RISC). Its three main objectives are to:

In accordance with the general objectives of the OMI initiative, the building-blocks developed in the project will be compatible with and accessible via the European Library Interface (ELI), enabling European users of the MIPS architecture to define and source their MIPS-based components from a European silicon vendor. The building-blocks will be defined in VHDL.

The MMI project will use both MIPS 32-bit R3000 and 64-bit R4000 architectures. For 32-bit systems, work will focus on developing macrocell building blocks, including a core (R3000A), floating-point unit (R3010A), writer-buffer (R3223), an ELI/X-BUS interface cell and a peripheral macrofunction cell. Special measures will be taken to decrease dynamic and static power consumption, including a power management capability. This work will be validated in two user-defined application demonstrators, targeted on portable systems, in the latter half of 1994. For 64-bit systems, work will focus on achieving substantial increases in performance through developing an innovative processor core and closely coupled peripherals. The improvements will be evaluated by the user partners, who will incorporate the resulting processor into their workstation and database server product lines.

However, due to rapid changes of exploitation conditions and business foci all project partners mutually agreed to terminate the project as of 1 April 1993. The project adhered closely to its workplan and achieved some major advancements as well as contributions to OMI as a whole. In particular, the definition of the PI-Bus standard (originally called X-bus) which was submitted as a proposed standard to the OMI/STANDARDS project.


CONTACT POINT

Dr Lothar Schrader
SIEMENS AG
Balanstr. 73
D - W-8000 MUNICH
tel: + 49/ 89 4144 3152
fax: + 49/ 89 4144 4697

Participants

SIEMENS AG - D - C
DIGITAL EQUIPMENT - UK - P
SIEMENS-NIXDORF
INFORMATIONSSYSTEME AG (SNI) - D - P
ENTWICKLUNGSZENTRUM FÜR
MIKROELEKTRONIK GMBH - A - A


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OMI/MMI - 6258, December 1993


please address enquiries to the ESPRIT Information Desk

html version of synopsis by Nick Cook