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

Discuss the concept of segmentation, Discuss the concept of segmentation? ...

Discuss the concept of segmentation? Segmentation is method for the non contiguous storage allocation. This is different from paging as this supports user's view of his program

Define both fork and vfork, How and when race conditions happen in process ...

How and when race conditions happen in process control? How can it be avoided? b. Differentiate among following functions giving related syntax: (i) fork and vfork (ii) w

How cloud can be used in event schedules, How cloud can be used in Event Sc...

How cloud can be used in Event Schedules and Management with an example. Web-based calendars can be used to post dates and schedules for specific public events, such as school

Address translation - computer architecture, Address translation: ...

Address translation: Compiler time : If it is known in advance that a program will reside at a particular location of primary memory, and then the compiler can be told to

Period and space tradeoffs - artificial intelligence, Period and Space Trad...

Period and Space Tradeoffs - artificial intelligence: In practice, you are going to stop your agent for long term using in searching goal at some stage if it has not found a s

Explain fundamental models of inter process communication, Explain the two ...

Explain the two fundamental models of inter process communication. Two kinds of message passing system are given as: (a) Direct Communication : Along with direct communicat

#title., REPRESENTATION OF POYNOMIAL OF 2 OR MORE VARIABLES USING ARRAY

REPRESENTATION OF POYNOMIAL OF 2 OR MORE VARIABLES USING ARRAY

Which transistor is used in every cell of eprom, Floating gate Avalanche In...

Floating gate Avalanche Injection MOS (FAMOS) transistor is used in every cell of EPROM.

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