Define the addressing modes, Computer Engineering

Assignment Help:

Q. Define the ADDRESSING MODES?

The elementary set of operands in 8086 can reside in memory, register and immediate operand. How can these operands be retrievedby various addressing modes? The answer to the question above is provided in the subsequent sub-section. Large number of addressing modes assists in addressing complex data structures with ease. A number of specific Terms and registers roles for addressing:

Base register (BX, BP): These registers are employed for pointing to base of a stack, array etc.

Index register (SI, DI): These registers are employed as index registers in data and/or extra segments.

Displacement: It signifies offset from the segment address. 

Addressing modes of 8086

Mode

Description

 

Direct

Effective address is the displacement of memory variable.

 

Register Indirect

Effective address is the contents of a register.

[BX]

[SI]

[DI]

[BP]

Based

Effective address is the sum of a base register and a displacement.

LIST[BX] 

(OFFSET LIST + BX)

[BP + 1]

Indexed

Effective address is the sumof an index register and a displacement.

LIST[SI]

[LIST +DI]

[DI + 2]

Based Indexed

Effective address is the sum of a base and an index register.

[BP + DI]

[BP + DI]

Based Indexed with

displacement

Effective address is the sum of a base register, an index register, and a displacement. 

[BX + SI + 2]


Related Discussions:- Define the addressing modes

Cryptography, Basically I need implement program using LC3 assembly languag...

Basically I need implement program using LC3 assembly language where I can type any message using ASCII code (this will my input). Then read the output in cipher text. It has to be

Briefly explain array processing in detail, Array Processing We have se...

Array Processing We have seen that for executing vector operations the pipelining conception has been used. There is other method for vector operations. If we have array of n p

Arrow keys - input commands, When the user is inputting commands into your...

When the user is inputting commands into your shell, it should identify the left, right , up and down arrow keys. To implement this, you will need to use the termios.h library to

How to make a datapool, When producing a datapool, you state the kinds of d...

When producing a datapool, you state the kinds of data (called data types) that the script will send for example, customer names, addresses, and unique order numbers or product nam

What is cts and cls, What is CTS and CLS? CLS stands for common langua...

What is CTS and CLS? CLS stands for common language specification CTS stands for common type system.

Explain types of micro-instructions, Q. Explain types of Micro-instructions...

Q. Explain types of Micro-instructions? In general micro-instruction can be classifiedin two general kinds. These are non-branching and branching. After execution of a non-bran

How did you find web server related issues, Using Web resource monitors we ...

Using Web resource monitors we can search the performance of web servers. Using these monitors we can examine throughput on the web server, number of hits per second that happened

Function of host to host transport layer in tcp/ip protocol, Illustrate the...

Illustrate the function of host to host transport layer in TCP/IP protocol stack? Function of Host - to-Host Transport Layer: This protocol layer just above inter network

Define the information system, Define the Information System Growi...

Define the Information System Growing sophistication in products and markets is driving the organisational requirement for increasing amounts of information. This req

What are near and far pointers, These days, they're pretty much obsolete; t...

These days, they're pretty much obsolete; they're definitely system-particular. They had to do with 16-bit programming under MS-DOS and perhaps some early on versions of Windows. I

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