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

Determine the signed numbers are used in binary arithmetic, When signed num...

When signed numbers are used in binary arithmetic, then which one of the notations would have unique representation for zero ? Ans. When signed numbers are utilized in binary ar

Why SS7 protocol is use, SS7 Protocol uses: (A) Out of band signalling...

SS7 Protocol uses: (A) Out of band signalling. (B) Associated signalling. (C) Speech control signalling. (D) No signalling. Ans: SS7 Protocol uses Out of

What is a client in sap terminology, What is a client in SAP terminology? ...

What is a client in SAP terminology? A S/W component that uses the service (offered by a s/w component) is known as a Client.  At the similar time these clients may also be ser

Differences between flexgrid control and dbgrid control, Normal 0 ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Implementing new technologies, There is a free internet access to all their...

There is a free internet access to all their customers they also ensure 24 hours security and for the post of chief information officer when the candidate has come for an interview

What is phase encoding, What is phase encoding or Manchestor encoding? ...

What is phase encoding or Manchestor encoding?  It is the method for combining clock information with data. It is a scheme in which alters in magnetization occur for each data

What is block started by symbol, What is BSS(Block Started by Symbol)? ...

What is BSS(Block Started by Symbol)? A data showing at the machine level, that has initial values when a program begins and tells about how much space the kernel assigns for t

Rpn procedure, Apply this algorithm to your MASM program 1) Declare the ...

Apply this algorithm to your MASM program 1) Declare the following variables in your data segment: .data ; ; These are the values of the variables ; Variables

Determine the define byte - assembler directives, Determine the Define Byte...

Determine the Define Byte - Assembler directives DB (Define Byte): DB directive defines a byte-type variable (i.e. a variable that occupies one byte of memory space). In a give

What is the task of the pass 2 in a two-pass assembler, In a two-pass assem...

In a two-pass assembler, the task of the Pass II is to? Ans. The task of the Pass II is to synthesize the target program in a two-pass assembler.

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