Daisy Chain, Polling & Independent Request Bus Contention & Arbitration Priority Resolving Schemes explained with following Timestamps:
0:00 - Daisy Chain, Polling & Independent Request Bus Contention & Arbitration Priority Resolving Schemes
0:14 - Basics of Bus Contention & Bus Arbitration
1:55 - Daisy Chain Method
6:36 - Polling Method
9:54 - Independent Request Method
12:38 - Comparison of Daisy Chain Method & Polling Method & Independent Request Method

Daisy Chain, Polling & Independent Request Bus Contention & Arbitration Priority Resolving Schemes explained with following outlines:
1. Daisy Chain, Polling & Independent Request Bus Contention & Arbitration Priority Resolving Schemes
2. Basics of Bus Contention & Bus Arbitration
3. Daisy Chain Method
4. Polling Method
5. Independent Request Method
6. Comparison of Daisy Chain Method & Polling Method & Independent Request Method

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Details of Daisy Chain, Polling & Independent Request Bus Contention & Arbitration Priority Resolving Schemes:

In a computer system with multiple devices that need to access a shared bus, there can be contention for access to the bus. To prevent conflicts and ensure that each device can access the bus in a timely and efficient manner, various bus contention and arbitration schemes are used. Three common bus contention and arbitration schemes are daisy chain, polling, and independent request.

Daisy Chain: In a daisy chain scheme, devices are connected in a chain with one device connected to the next. When a device needs to access the bus, it sends a request to the next device in the chain. The request is passed down the chain until it reaches the device that controls the bus. This device grants access to the requesting device, and the process is reversed for releasing the bus.

Polling: In a polling scheme, the device controller polls each device on the bus in a fixed sequence to see if it needs to access the bus. When a device needs to access the bus, it sends a signal to the controller, which grants access. Once the device completes its operation, it signals the controller to release the bus.

Independent request: In an independent request scheme, each device on the bus can independently request access to the bus at any time. A bus controller monitors the requests and grants access to one device at a time based on a set of priority rules.

In addition to these schemes, priority resolving techniques can be used to determine which device should be granted access to the bus in case of contention. Some common priority resolving techniques include fixed priority, rotating priority, and threshold priority. In fixed priority, each device is assigned a fixed priority level that determines its access to the bus. In rotating priority, the priority level of the devices rotates in a fixed sequence. In threshold priority, devices are assigned a priority level based on their need for the bus, and the controller grants access to the device with the highest priority.

Overall, the choice of bus contention and arbitration scheme and priority resolving technique depends on the specific requirements and characteristics of the system being designed.