Explain about operand address calculation, Computer Engineering

Assignment Help:

Q. Explain about Operand Address Calculation?

In actual machines effective address can be a register address, memory or I/O port address. Register reference instructions for example complement R1, clear R2 etc.usually don't need any memory reference (presuming register indirect addressing isnot being used) and can directly go to execute cycle. However memory reference instruction can use various addressing modes. Relying on type of addressing effective address (EA) of operands in memory is calculated. Calculation of effective address may require more memory fetches (for example in case of indirect addressing) so in this step we may calculate effective address as below: 

1734_Explain about Operand Address Calculation.png

So the address part of IR now comprises the effective address which is direct address of operand.


Related Discussions:- Explain about operand address calculation

Distinguish between ROM, Distinguish between ROM, PROM, EPROM, EEPROM. ...

Distinguish between ROM, PROM, EPROM, EEPROM. Ans: ROM: It also called Read Only Memory is a Permanent Memory. The data is permanently stored and cannot be changed in Perm

Show how pages will be allocated using first-in-first-out, Consider the fol...

Consider the following page reference and reference time strings for a program: Page reference string: 5,4,3,2,1,4,3,5,4,3,2,1,5,..... Show how pages will be allocated using t

Write the command to show the ip host table, show hosts is the command whi...

show hosts is the command which display the IP host table

What is insert module and goal seek functions there in vba, Visual basic ap...

Visual basic applications have very rich and flexible applications but there is single limitation when using pointer function. Windows API has limited support for function pointers

Is tcp connection-oriented?, Q. Is tcp Connection-oriented? TCP is conn...

Q. Is tcp Connection-oriented? TCP is connection-oriented. This means a connection is established between source and destination machines before any data is sent it implies tha

Using bit wise operator implement nor and nand gate, Q. Write a program t...

Q. Write a program to implement NOR, NAND, XOR and XNOR gates using and without using bit wise operator. Also perform necessary checking. The user has option to give n numbe

Find traffic offered and lost, Discuss grade of service. During busy hour, ...

Discuss grade of service. During busy hour, 1500 calls were offered to a group of trunks and 8 calls were lost. The average call duration was 120 seconds. Calculate the traffic off

Logic gates required to build a half adder, What are the gates required to ...

What are the gates required to build a half adder ? Ans. The gates needed to build a half adder are EX-OR gate and AND gate as shown below the logic diagram of half adder:

Interfacing subroutines with parameter passing, Interfacing Subroutines wit...

Interfacing Subroutines with Parameter Passing Let's now write a C program which calls the assembly program for parameter passing. Let's extend the previous two programs such t

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