Operation of micro-programmed control unit, Computer Engineering

Assignment Help:

Micro-instructions are stored in control memory. Address register for control memory comprises the address of subsequent instruction which is to be read. Control memory Buffer Register receives micro-instruction which has been read. A particular micro-instruction execution mainlyincludes the generation of desired control signals and signals used to determine the subsequent micro-instruction to be executed. Sequencing logic section loads control memory address register. It issues a read command to control memory. The subsequent functions are performed by micro-programmed control unit:

1. Sequence logic unit specifies address of the control memory word which is to be read in the Address Register of Control Memory. It also issues READ signal.

2. Desired control memory word is read into control memory Buffer Register.

3. Content of the control memory buffer register is decoded to create control signals and subsequent-address information for sequencing logic unit.

4. Sequencing logic unit finds address of next control word on the foundation of next-address information from decoder and ALU flags.

The execute cycle steps of micro-operations are different for every instructions additionally the addressing mode can be different. All such information normally is dependent on opcode of the instruction Register (IR). So IR input to Address Register for Control Memory is desirable. So there exist a decoder from IR to Address Register for control memory.


Related Discussions:- Operation of micro-programmed control unit

Write c program to read the text book number, With a C program to read the ...

With a C program to read the text book number, title, author and publisher into a structure and print these values. # include # include void main() { struct boo

Java''s layout managers give over traditional windowing syste, Java uses la...

Java uses layout managers to lay out components in a consistent manner across all windowing platforms. As Java's layout managers aren't tied to absolute sizing and positioning, the

Flowchart, How to calculate the flowchart

How to calculate the flowchart

Vector-vector instructions-vector processing, Vector-Vector Instructions ...

Vector-Vector Instructions In this type, vector operands are fetched by the vector register and saved in another vector register. These instructions are indicated with the foll

Copy machine problem, We are trying to figure out how many copy machines we...

We are trying to figure out how many copy machines we should install in the basement of Stranahan Hall.  Copy machines should be available 24/7.  Students may walk up at any time o

State about the mainframe computer, Mainframe computer Mainframe comput...

Mainframe computer Mainframe computers are very large, often can fill an entire room. They can store a large amount of information, can execute many tasks at the same time, can

Explain the passive matrix in lcd technology, Q. Explain the Passive Matrix...

Q. Explain the Passive Matrix in lcd technology? In a passive matrix arrangement LCD panel has a grid of vertical and horizontal conductors and every pixel is positioned at an

Describe the necessary conditions for deadlock, Describe the necessary cond...

Describe the necessary conditions for Deadlock. Required conditions for deadlock 1. Mutual exclusion 2. Hold and wait 3. No preemption 4. Circular wait Mutual e

Object orientation and uml, In this task you are supposed to create three U...

In this task you are supposed to create three UML diagrams. The conditions are given by the scenario in the document Theatre Case (on Blackboard). A theatre manager has ordered a s

Depth - basic characteristics of an experts system, An expert system has d...

An expert system has death that is it operate effectively in a narrow domain containing difficult challenging problems. Thus the rules in an experts systems are necessarily co

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