Explain about micro-instruction formats, Computer Engineering

Assignment Help:

Q. Explain about Micro-instruction Formats?

Now let's focus on format of a micro-instruction. The two widely used formats employed for micro-instructions are vertical and horizontal. In horizontal micro-instruction every bit of micro-instruction signifies a control signal that directly controls a single bus line or occasionally a gate in the machine. Though the length ofsuch a micro-instruction can be hundreds of bits. A typical horizontal micro-instruction with its related fields is demonstrated in Figure below.

2317_Explain about Micro-instruction Formats.png

(a)   Horizontal Micro-instruction

1906_Explain about Micro-instruction Formats1.png

(b)   Vertical Micro-instructions

1052_Explain about Micro-instruction Formats2.png

Figure: Micro- instruction Formats

In a vertical micro-instruction several similar control signals can be encoded in a few micro-instruction bits. For example for 16 ALU operations that may need 16 individual control bits in horizontal micro-instruction only 4 encoded bits are required in vertical micro-instruction. In the same way in a vertical micro-instruction only 3 bits are required to select one of eight registers. Though these encoded bits need to be passed from the respective decoders to get the individual control signals. This is shown in figure above.

Generally a horizontal control unit is faster however requires wider instruction words while vertical control units though; require a decoder are shorter in length. Most of systems employ neither purely vertical nor purely horizontal micro-instructions figure (c) above.

Related Discussions:- Explain about micro-instruction formats

Search in problem solving - artificial intelligence, Search in Problem Sol...

Search in Problem Solving: If Artificial Intelligence can inform that the other science about anything, it is about problem solving and, in particular, how to research after s

Cse 320, Explain the functionality of the quadrant approach in the Spiral M...

Explain the functionality of the quadrant approach in the Spiral Model ?

Write a menu driven program to find 10''s complement, Q. Write a menu dri...

Q. Write a menu driven program to find 9's and 10's complement of a decimal number using file. Perform necessary validation with proper message that entered numbers must be de

Define deadlock, Define deadlock. A process requests resources; if the ...

Define deadlock. A process requests resources; if the resources are not available at that time, the method enters a wait state. Waiting processes might never again change state

How to set table properties in dreamweaver, Q. How to Set Table Properties ...

Q. How to Set Table Properties in dreamweaver? Now you will use table Property inspector to clear the extra space in navigation buttons table and to add a background color in t

Conclusion - artificial intelligence , Conclusion - artificial intelligence...

Conclusion - artificial intelligence : If we can determine what the exactly state of the world will be after an agent's action, so we can say the environment is deterministic.

E- commerce technology and web design, In this assignment, you are required...

In this assignment, you are required to develop part of a B2C e-Commerce site which is an online movie reservation system for a multiplex theatre. Through the developed site, the u

Enumerate about the specialised hardware, Enumerate about the Specialised h...

Enumerate about the Specialised hardware Specialised hardware such as protected memory or cryptographic memory module for storing and protecting the keys proves to be a good s

The three main elements of ldb, The three main elements of LDB are:- St...

The three main elements of LDB are:- Structure Selections and Database Program.

What is a verification point?, A verification point is a point in a script ...

A verification point is a point in a script that you make to confirm the state of an object across builds of the application-under-test.

Write Your Message!

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