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

What is class invariant in c++, A class invariant is a condition that descr...

A class invariant is a condition that describes all valid states for an object. It is a logical condition to make sure the correct working of a class. Class invariants must hold wh

What is the significance of asp.net routing, ASP.NET MVC uses ASP.NET routi...

ASP.NET MVC uses ASP.NET routing, to map incoming browser requests to controller action process. ASP.NET Routing makes use of route table. Route table is formed when your web appli

Resolution method - artificial intelligence, Resolution Method - Artificial...

Resolution Method - Artificial intelligence: A minor miracle happened in 1965 when Alan Robinson published his resolution function. This function uses a generalized format of t

Differences between internal and external fragmentation, Explain the differ...

Explain the differences between Internal and external fragmentation. Internal and external fragmentation (1) While memory allocated to a process is a little larger than th

Explain characteristics in java for e-commerce applications, Explain the ch...

Explain the characteristics and utilities available into java that makes it appropriate for developing e-commerce applications. Following are the characteristics and utilities

Write the truth table and simplify karnaugh map, For F = A.B.C + B.C.D ...

For F = A.B.C + B.C.D ‾ + A‾.B.C ,  write  the  truth  table and simplify using Karnaugh map . And. Simplification of Logic Function F = A B C + B C‾ D + A‾ B C. Therefore the

Control of program, Example:                         CMP    AX,BX    ;...

Example:                         CMP    AX,BX    ; compare instruction: sets flags JE        THERE    ; if equal then skip the ADD instruction  ADD  AX, 02    ; add 02

Mips simulator: testing, Your code will be tested using a command script. T...

Your code will be tested using a command script. The script is available on Blackboard in the archive MIPSimTest.zip. It contains a ReadMe file that explains how to run the script

What are the advantages of segmentation, What are its advantages? How is se...

What are its advantages? How is segmentation implemented in typical microprocessors? The first benefit that memory segmentation has is that only 16 bit registers are necessary

Difference between relocatable and self relocatable programs, Difference be...

Difference between relocatable and self relocatable programs. A relocatable program is one which can be processed to relocate it to a selected area of memory. For illustratio

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