Opcode field of an instruction, Computer Engineering

Assignment Help:

For this machine there can be two more possible addressing modes in addition to direct andimmediate.  

Opcode field of an instruction is a group of bits which define various processor operations like LOAD, STORE, ADD and SHIFT to be performed on some data stored in registers or memory.  

The operand address field can be data or can refer to data- which is address of data or can be labels which may be the address of an instruction you want to execute next, these kind of labels are generally used in Subroutine call instructions. An operand address may be: 

  • CPU register address
  • Memory address
  • I/O device address

The mode field of an instruction specifies a range of alternatives for referring to operands using the given address. Please note that if operands are placed in processor registers then an instruction executes faster than that of operands placed in memory as the registers are very high-speed memory used by CPU. Though to put the value of a memory operand to a register you will need a register LOAD instruction.


Related Discussions:- Opcode field of an instruction

Explain register marker, Explain Register marker. Register marker: St...

Explain Register marker. Register marker: Strowger selectors doing searching and counting. Conversely, the crossbar switch has no 'intelligence'. Something external to the

Avoiding overfitting - decision tree learning , Avoiding Overfitting : ...

Avoiding Overfitting : However remember there that in the previous lecture, there is over fitting that common problem in machine learning. Furthermore details to decision tree

Show buffered mode for point-to-point message passing, Q. Show Buffered mod...

Q. Show Buffered mode for Point-to-point Message Passing? Buffered mode: Transmitting can be started whether or not matching receives has been started and transmitting may comp

How e-commerce works for the customer, The customers visit the website and ...

The customers visit the website and browse through the products, looking at pictures and products details. When the customer finds his desired product, he usually adds it to his ca

Uneven load distribution in parallel computers, Q. Uneven Load Distribution...

Q. Uneven Load Distribution in parallel computers? In parallel computers the problem is split in sub-problems in addition is assigned for computation to several processors howe

What do you mean by internet, Q. What do you mean by Internet? Ans: In...

Q. What do you mean by Internet? Ans: Internet is a network of networks or collection of networks. Several networks such as WAN and LAN connected through suitable hardware an

Analysis of sort bitonic, Analysis of Sort_Bitonic(X) The bitonic sorti...

Analysis of Sort_Bitonic(X) The bitonic sorting network needs log n number of phases for performing task of sorting the numbers. The first n-1 phases of circuit can sort two n/

Give the difference between register and counter, Q. Give the difference be...

Q. Give the difference between Register and Counter. Q. Give the difference between Flip-flop and Latch. Q. Draw a set of waveforms for following signal on out-put line.

Describe about managing data tasks?, Data can be handled by using the featu...

Data can be handled by using the features of Import text wizard and export text wizard. Here you can keep the operation for future use. First you should edit the specification name

What is thread, What is Thread? A thread, sometimes termed a lightweigh...

What is Thread? A thread, sometimes termed a lightweight process (LWP), is a fundamental unit of CPU utilization; this comprises a thread ID, a register set, a program counter

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