PCI-RMS Bridge

PCI-RMS Bridge to RMS Bus (I or II)




  • Provides a high speed data connection between Concept/32® Reflective Memory Systems and PCI-RMS Nodes (including LCRS, Linux or Windows PCs)
  • Bridges to either RMS I or RMS II Buses
  • Bridge transfer between RMS Bus ( I or II ) and PCI-RMS Ring can be controlled by configurable memory regions
  • PCI-RMS Ring transfers below 16MB/sec can be selected to pass to an RMS I Bus
  • PCI-RMS Ring transfers below 256MB/sec can be selected to pass to an RMS II Bus
  • Configurable to provide RMS Bus ( I or II ) arbitration and termination




  • Allows connection of Legacy COMPRO Computer Systems to modern "open" computer systems using Windows NT®, UNIX Tru64, Solaris™ and/or HP's OpenVMS™.
  • Interfaces with exiting RMS Bus cables
  • No additional software required



The PCI-RMS Bridge provides a path between COMPRO’s Reflective Memory System (RMS) and the PCI-RMS Ring. The Bridge allows either RMS I or RMS II transfers to propagate to PCI-RMS Nodes and PCI-RMS Node transfers to flow onto RMS I or RMS II Bus. The Bridge provides a method for connecting Nodes to an existing RMS Bus using "state of the art" computing systems. This capability offers a seamless, non-intrusive mechanism to augment Legacy systems with powerful new features using today's computing solutions. By adding PCI-RMS nodes, the architecture can easily expand into a tightly coupled "super-system", cooperatively working on the most challenging applications.


The Bridge requires one node ID on the RMS Bus (I or II) and one node ID on the PCIRMS Ring. The following block diagram illustrates how a PCI-RMS Ring connects to a Concept RMS Bus using the RMS Bus to PCI-RMS Bridge.

Physical Description


The Bridge has a similar form factor to an RMC. During installation, an RMC is removed from the RMC Chassis and the Bridge is installed in its place. Compatible RMS Bus cable connectors are provided for connection to the RMS Bus. Two copper PCI-RMS cable connectors are provide for connection PCI-RMS Ring nodes.




Listed below are the physical and environmental specifications for the RMS Bus to PCI-RMS Bridge.




            Depth:            4.41 inches (12.217 centimeters)

            Width:            15.95 inches (40.513 centimeters)

            Weight:          1.6 lbs ( 0.73 kilograms)



            Operating:     Temperature: 32 degrees F to 104 degrees F

                                  (0 degrees C to 40 degrees C)


                                   Relative Humidity: 5% to 95%


                                   Storage: Temperature: 32 degrees F to 104 degrees F

                                   (0 degrees C to 40 degrees C)

                                   Relative Humidity: 20% to 80%




            Voltage:          5.0 VDC +/- 5%

                                   12.0 VDC +/- 5%

            Current:          7 Amps, 5 VDC

                                   1 Amp, 12 VDC


Ring Healing External Power Requirements


            Voltage:          12.0 VDC +/- 5%

            Current:          1 AMP


Data Rates


            RMS I Bus 26MB maximum

            RMS II Bus 52MB maximum

            PCI-RMS 70MB measured

            RMS to Ring 25 MB maximum


Note:  To download the PCI-RMS Bridge product brochure, click




Sun, SPARC, Solaris, RMS and Sun Microsystems, Inc. are trademarks or registered trademarks of Sun Microsystems, Inc. CONCEPT/32 is a registered trademark of COMPRO UNIX is a registered trademark in the U.S. and other countries licensed exclusively through X/Open Company LTD. Windows NT is a registered trademark of Microsoft Corporation. OpenVMS is a trademark of Hewlett Packard Computer Corporation. All other trademarks and registered trademarks are the property of their respective holders.

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