Explain about control memory organization, Computer Engineering

Assignment Help:

Q. Explain about Control Memory Organization?

One of the simplest ways to organize control memory is to organize micro-instructions for different sub cycles of machine instruction in memory. The Figure below demonstrates such an organisation.

453_Explain about Control Memory Organization.png

Figure: Control Memory Organisation

Let us give an illustration of control memory organization. Let's take a machine instruction: Branch on zero. This instruction causes a branch to a specified main memory address if result of the last ALU operation is zero which means zero flag is set. Pseudocode of micro-program for this instruction would be;

                         Test "zero flag" If SET branch to label ZERO

                         Unconditional branch to label NON-ZERO 

ZERO:  (Microcode that causes replacement of program counter with address offered in instruction)

    Branch to interrupt or fetch cycle.

NON -ZERO:  (Microcode that can set flags if desired indicating branch hasn't taken place).

    Branch to interrupt or fetch cycle. (For Next- Instruction Cycle)


Related Discussions:- Explain about control memory organization

How many bits require in TCP protocol header checksum, In TCP protocol head...

In TCP protocol header "checksum" is of___________? In protocol header of Transfer Control Protocol checksum is of 16 bits.

Embedded software, Embedded Software Intelligent products have becom...

Embedded Software Intelligent products have become commonplace for all consumer and industrial market. Embedded software stays in read only memory and is utilised to control

Polymorphism and inheritance in lingo programming, Question : (a) What...

Question : (a) What are parent scripts and child objects in Lingo object oriented programming (OOP)? What are the equivalent terms used in C++ OOP? (b) Differentiate b

How do you find out the flaw, How do you find out the flaw, which of the ad...

How do you find out the flaw, which of the address getting written wrongly. Fill the full memory once with either random data or sequential data then after filling totally rea

Mac and llc, how can we improve the way LLC and MAC are used for LAN operat...

how can we improve the way LLC and MAC are used for LAN operation.?

Compare memory mapped i/o with i/o mapped i/o, Compare memory mapped I/O wi...

Compare memory mapped I/O with I/O mapped I/O. Memory Mapped I/O Scheme: In this scheme there is only one address space. Address space is stated as all possible addresses tha

Minimum total number of shelv, Write a program that finds the minimum total...

Write a program that finds the minimum total number of shelv, C/C++ Programming

What is the difference among character and block devices, a. What is the di...

a. What is the difference among character and block devices? b. Discuss the method to make a Kernel Driver for the PC Speaker. c. Explain the socket structure with the help o

Testmanagers wizard, TestManager has a wizard that you can use to copy or i...

TestManager has a wizard that you can use to copy or import test scripts and other test assets (Datapools) from one to another.

Failures, FAILURES Since reliability engineering is focused on the surv...

FAILURES Since reliability engineering is focused on the survivability or absence of failures, it is more concerned about failures,  understanding  their causes and defining re

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