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

Develop a menu driven program, Q.  Develop a Menu driven program with follo...

Q.  Develop a Menu driven program with following menu: a.  Binary to Decimal b.  Binary to Octal c.  Binary to Hexadecimal d.  Exit (Put proper validation for input

Draw and elucidate the block diagram 8259, Draw and elucidate the block dia...

Draw and elucidate the block diagram of programmable interrupt controller 8259. The 8259A adds 8 vectored priority encoded interrupts to microprocessor. It can be expanded to 6

Explain the race around condition, Explain the Race Around Condition? C...

Explain the Race Around Condition? Consider the inputs of the JK flipflop j=1 and k=1 and Q=0 when a clock pulse of width tp is applied the output will change from 0 to 1 after

Explain the microprocessor development system, Microprocessor development s...

Microprocessor development system Computer systems have undergone many changes recently. Machines that once filled large areas have been reduced to small desktop computer syste

Define addressing modes, Define addressing modes. The dissimilar ways i...

Define addressing modes. The dissimilar ways in which the location of an operand is specified in an instruction are referred to as addressing modes.

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

REPRESENTATION OF POYNOMIAL OF 2 OR MORE VARIABLES USING ARRAY

Advantages and disadvantages of shared memory programming, Q. Show Advantag...

Q. Show Advantages and Disadvantages of Shared Memory Programming? Advantages of Shared Memory Programming Data sharing between processes is both rapid and uniform bec

Explain the linux from scratch system, Problem 1 (a) Explain the RAID ...

Problem 1 (a) Explain the RAID system and explain all possible configurations. (b) Summarize design goals, features and specifications of the Linux ext2 file system. (c

What is an activex interface, An ActiveX interface is a group of linked fun...

An ActiveX interface is a group of linked functions that are grouped together

Describe the architecture of electronic data exchange, Describe the Electro...

Describe the Electronic Data Exchange (EDI) architecture in brief. Electronic Data Interchange (EDI) may be generally easy to understand as the replacement of paper-based purch

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