Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 22 Sep 2017 My Price 5.00

synchronous arbitration scheme

The VAX SBI bus uses a distributed, synchronous arbitration scheme. Each SBI device (i.e., processor, memory, I/O module) has a unique priority and is assigned a

unique transfer request (TR) line. The SBI has 16 such lines (TR0, TR1, . . ., TR15), with TR0 having the highest priority. When a device wants to use the bus, it places a reservation for a future time slot by asserting its TR line during the current time slot. At the end of the current time slot, each device with a pending reservation examines the TR lines; the highest-priority device with a reservation uses the next time slot. A maximum of 17 devices can be attached to the bus. The device with priority 16 has no TR line. Why not?

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Maurice Tutor
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Status NEW Posted 22 Sep 2017 09:09 AM My Price 5.00

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