COA100% Active LaboratorySIMULATION

Multi-Master Bus Arbitration Protocols Laboratory

Interactive bus priority controller comparing Daisy Chaining, Polling Method, and Independent Request priority encoders. Inspect Bus Request (BR) and Bus Grant (BG) wires.

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COA • SIMULATIONMulti-Master Bus Arbitration Protocols Laboratory

COA • SYSTEM BUS & INTERCONNECTMulti-Master Bus Arbitration

Bus Arbitration Protocols & Priority Resolution Laboratory

Bus Master Devices (Click to Toggle Bus Request BR)Priority Order: Device 1 > Device 2 > Device 3

Master Device 1IDLE

Priority: Rank #1

Master Device 2BUS GRANTED

Priority: Rank #2

Master Device 3REQUESTING

Priority: Rank #3

Signal Wire Topology & Bus Controller State:DAISY CHAINING

[Bus Controller] ---BG Line---> [Device 1] ---BG Line---> [Device 2] ---BG Line---> [Device 3]

Common Bus Request Line (BR): HIGH (Asserted)

Bus Busy Line (BBSY): HIGH (Occupied by Device 2)

Engineering Tradeoffs:

Daisy Chaining: Lowest hardware cost (requires only 3 control lines regardless of master count). However, propagation delay is proportional to device count ($O(n)$), and any device failure in the chain breaks grant transmission down the line.

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