Bus interface units sharing a common bus using distributed control for allocation of the bus
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United States of America Patent
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Feb 8, 1983
Grant Date -
N/A
app pub date -
Aug 20, 1980
filing date -
Aug 20, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A distributed data processing system is disclosed which has truly distributed control. A plurality of bus interface units (BIU) are interconnected by the distributed system data bus (DSDB) which includes a clock line, a serial command line (CMD), a serial bus allocation line (BAL) and a two byte wide data bus. A central clock connected to the clock line which defines the message frame timing, is the only centralized 'control' element in the system. Each BIU may in turn be connected to either one or several data processing units, an I/O port, or a bridge connecting to still another similar bus network.
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