Explain about instruction cycle, Computer Engineering

Assignment Help:

Q. Explain about Instruction Cycle?

The instruction cycle for this provided machine comprises four cycles. Presume a 2-bit instruction cycle code (ICC). The ICC can represent the state of the processor in terms of cycle. For illustration we can use:

00:  Fetch 

01:  Indirect

10: Execute

11: Interrupt

At the end of each of four cycles ICC is set appropriately. Please note that an indirect cycle is always followed by execute cycle and interrupt cycle is always followed by fetch cycle. For both execute and fetch cycles, the subsequent cycle relies on the state of the system. Let's show an instruction execution employing instruction cycles and timing diagram:

1683_Explain about Instruction Cycle.png

Figure: Timing Diagram for ISZ instruction

Please note that address line decide the location of memory. Read/ write signal controls whether the data is being input or output. For illustration at time T2 in M2 read control signal becomes active A9 - A0 input comprises MAR that value is kept enabled on address bits and data lines are enabled to accept data from RAM so enabling a typical RAM data output on the data bus.

For reading no data input is applied by CPU however it is put on data bus by memory after the read control signal to memory is activated. Write operation is triggered along with data bus carrying the output value.


Related Discussions:- Explain about instruction cycle

What are desirable features of an electronic market place, What are the des...

What are the desirable features of an Electronic Market Place? Features of an Electronic Market Place: 1. Its electronic and business center is not a physical building qu

Limits of traditional payment instruments and overcome, What are the restri...

What are the restrictions of traditional payment instruments? How are such restrictions overcome by electronic payment systems? The restrictions of traditional payment system a

I have a user defined function that does not recalculate, Contain all the c...

Contain all the cells that your UDF depends on in the argument list. Or enter this as the first statement in your Function: Application.Volatile This will cause the functi

Performance of pipelines with stalls, Performance of Pipelines with Stalls:...

Performance of Pipelines with Stalls: A stall is reason of the pipeline performance to degrade the ideal performance.                                             Average in

What is the working of domain expert, Q. What is the working of domain expe...

Q. What is the working of domain expert? ANSWER: The domain expert is the person who gives the domain expertise in the form of problem-solving strategies.

What is race condition, What is Race condition? Race condition: The c...

What is Race condition? Race condition: The circumstances where several processes access - and manipulate shared data-concurrently. The last value of the shared data depends

Illustrate what is universal law of universal gravitation, Q. Illustrate wh...

Q. Illustrate what is the universal law of universal gravitation? Answer:- Declaration that any particle of matter in the universe attracts any other with a force varying

Asp.net, how work for asp.net

how work for asp.net

What does wsdl stand for, What does WSDL stand for?  WSDL stands for We...

What does WSDL stand for?  WSDL stands for Web Services Description Language.  It is an XML representation of the web service interface. There are two parts of the operation

Explaintask and parallel task, Task   A task is logically discrete ...

Task   A task is logically discrete section of computational work. A task is normally a program or else set of instructions which are executed by a processor. Parallel

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd