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

Logical representations in artificial intelligence, Logical Representations...

Logical Representations: If every human being spoke the same kind of language, there would be several less misunderstanding in the world. The problem with software engineering

Advantage or disadvantage of using INADDR_ANY, What is the advantage or dis...

What is the advantage or disadvantage of using INADDR_ANY instead of the IP address of the computer running on the server? The format of TCP/IP, structure sockaddr_in defines u

Provide a diagrammatic interpretation of the hardware stack, a) Prototype ...

a) Prototype a macro known AP which takes 4 integer parameters n (number of terms), a (first term), l (last term) and Sum (sum of n terms), provided that: Sum = (a+l)*n/2 b)

What do you mean by u-area or u-block, What do you mean by u-area (user are...

What do you mean by u-area (user area) or u-block? This having the private data that is manipulated only by the Kernel. This is local to the Process, i.e. every process is a

Explain in detail about register transfer language, We have multiple instan...

We have multiple instances in RTL (Register Transfer Language), do you do anything special during synthesis stage? Whereas writing RTL(Register Transfer language),say in Verilo

Explain microcode and VLSI technology, Q. Explain Microcode and VLSI Techno...

Q. Explain Microcode and VLSI Technology? It is considered that CU of a computer be assembled using two ways; create micro-program which execute micro-instructions or construct

Concept of multithreading, Concept of Multithreading: These troubles incre...

Concept of Multithreading: These troubles increase in the design of large-scale multiprocessors such as MPP as discussed above. Thus, a solution for optimizing this latency should

Basic performance equation, Explain the basic performance equation Ans...

Explain the basic performance equation Ans: The basic performance equation is following T = N * S/ R T =>  It is processor time required to execute a program N => act

Collective communications - broadcast, Q. Collective Communications - Broad...

Q. Collective Communications - Broadcast? Broadcast: Broadcasting can be done in two ways one of them is one to all and another one is all to all. In the matter of one to all b

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