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Article #455

Real-Time LAN Solution

#455
From: newwave
Date: Sat, 24 Nov 1990 16:39
35 lines
1843 bytes
Real-Time LAN Solution Integrating Multiple Vendors

  To address the needs of users wanting a real-time network incorporating
multiple computer vendors, an Ohio-based company introduced SCRAMNet (TM).

  SCRAMNet (Shared Common Random Access Memory Network) is a high speed, 
real-time shared memory local area network.  SCRAMNet is not a token-passing
ring like other commercial products.  More precisely, it is a register-insertion
ring where each node places the network data into an out-going FIFO.  Each 
node consists of a host interface, network interface circuitries, and shared
memory (8K min - 2M max).  This memory is replicated memory, where every node
on the ring has the same contents.  This memory is viewed by the host CPU as
"just memory".

Major Features:
 - 150 Megabyte/second data rate
 - Fiber Optic Link
 - Data Filtering (avoids unnecessary traffic)
 - Programmable Byte Swapper
 - No Software Overhead
 - Multiple Bus Interfaces (VME,QBus,UNIBus,NuBus,Multibus,Selbus etc.)
 - Per-location Interrupt Passing
 - Automatic Error Recovery
 - 200 - 600 nsec Node Latency
 - 700m Max Node Separation
 - Gateway Node to interconnect to other low-speed message passing networks
    such as Ethernet and FDDI

  This is just an introduction article.  Interested then drop me a line.

K. Desai
Internet ID: newwave@desire.wright.edu
             newwave@eve.wright.edu
Bitnet ID:   newwave@wsu.bitnet
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From: newwave@desire.wright.edu
Newsgroups: comp.sys.misc
Subject: Real-Time LAN Solution
Message-ID: <1990Nov24.113954.1870@desire.wright.edu>
Date: 24 Nov 90 16:39:54 GMT
Organization: University Computing Services, Wright State University
Lines: 35