With the introduction of the Model P1600 interface from Systran Corp.,
companies requiring real-time network performance can incorporate personal
computers (PCs) into their high-speed systems. The Model P1600 interface
enables 386- or 486-based PCs to send and receive information from other
computers at data rates of 150 Mbits/second over the SCRAMNet fiber-optic,
replicated shared-memory network.

With the Model P1600, system architects can achieve the best of two worlds:
the real-time performance of the SCRAMNet network and the
price/performance advantages of PCs, all in one heterogeneous network.
This is useful for such real-time applications as aircraft simulation,
graphics generation, data acquisition, telemetry and process control. The
Model P1600 joins many other interfaces in the SCRAMNet family of
real-time network products, including interfaces to VME, Q-bus, MULTIBUS
I, SelBUS and other backplane busses.

The Model P1600 consists of an interface card installed in the host
computer's CPU and an external enclosure housing the replicated
shared-memory and network boards, connected to the host with shielded
cables.

W. Lynn Trainor, president of Systran, said "Organizations that need the
high-end data transfer speeds offered by SCRAMNet are under increasing
pressure to reduce costs. By incorporating PCs into their real-time,
heterogeneous networks, they can cut costs without losing the performance
for which they bought their network. Adding PCs to a SCRAMNet network
increases the variety of SCRAMNet computer nodes, furthering SCRAMNet's
position as a standard in the realm of real-time applications, while
meeting our customers' needs for improved price/performance."

SCRAMNet Designed for Simplicity, Speed 

With SCRAMNet's replicated shared-memory design, all computer nodes on the
network are equipped with identical computer-addressable memories. Every
change to the replicated shared-memory at one node is immediately and
automatically replicated in all nodes on the network in microseconds,
causing all the computers to appear in real-time applications as one large
virtual multi-processor. Featuring fiber-optic technology, a sophisticated
interrupt structure, data filtering and a programmable byte swapper, the
SCRAMNet network avoids the limitations of physical shared-memory
architecture and message-passing LANs to deliver true real-time speed,
deterministic performance, and positive system control with no software
overhead.

The Model P1600 -- Enabling PCs to Transfer Data at Lightning Speeds 

The Model P1600 provides a transparent, efficient link between the SCRAMNet
network and 386- and 486-based PCs. Like all Systran boards, it features
the SCRAMNet simplicity, where all data is replicated in PC memory as it
occurs, with no protocol conversions. Features include:

 Economical connection that can be installed in any 386/486 host
backplane. The external enclosure can be mounted in a standard 19" rack.

 Compatible with the ISA and EISA standards. 

. Powerful interrupt capabilities. 

. Sophisticated memory architecture. Replicated shared-memory up to 2
Mbytes in size exists in the host PC as extended memory and is accessed
via the protected mode. Efficient network writes. Any two consecutive
16-bit writes from the host PC bus can be bundled together for increased
network bandwidth. 

 Efficient, trouble-free hardware installation and verification through
executable hardware confidence test software and source code.

 Optional library routines that install the interface, set interrupts,
clear memory and activate the byte swapper.

Price and Availability 

The Model P1600 is available now, at prices per node ranging from $6,900 to
$9,800, depending on configuration.

An established research and development firm headquartered in Dayton, Ohio,
Systran Corp. specializes in simulation, artificial intelligence and
defense-related hardware/software research and development. The company's
SCRAMNet network is the leading real-time network, with hundreds of nodes
in use at aerospace, corporate and U.S. military installations. For more
information, contact Systran headquarters at 4126 Linden Ave., Dayton, OH
45432-3068. Telephone: 1-800-252-5601. Fax: (513) 258-2729.

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