Define word (dw)- assemblers directive-microprocessor, Assembly Language

Assignment Help:

DW : Define Word:-

The DW directive serves the same purposes as the DB directive, but now it makes the assembler  which reserves thenumber ofmemory words (16-bit) instead of bytes. Some instance aregiven to explain this directive.

Example :

WORDS           DW      1234H, 4567H, 78ABH, 045CH,

This  makes the assembler reserve 4 words in memory (8  bytes), and by initializing the words with the specified values in the given statements. At the time of initialisation, the lower bytes are stored at the lower memory addresses, whereas the upper bytes are stored at the higher addresses. Another option of the DW directive can be explained with the DUP operator.

WDATA            DW 5 DUP (6666H)

This statement reserves five words, for example10-bytes of memory for a word label WDATA and initialises all the word locations having 6666H.


Related Discussions:- Define word (dw)- assemblers directive-microprocessor

Rics/cisc architecture-microprocessor, RICS/CISC Architecture An essent...

RICS/CISC Architecture An essential aspect of computer architecture is the design of the instruction set for the processor.  The instruction set selected for a specific compute

Assembly Language Program, which uses BIOS interrupt INT 21 to read current...

which uses BIOS interrupt INT 21 to read current system time and displays it on the top-left corner of screen.

Write a program to print name, Write a program to do the following: 1. P...

Write a program to do the following: 1. Print your name 2. Using a bottom testing loop, prompt the user to enter a number from 1 to 5.  If the number entered is not 1..5, pri

Xml, Write the structure of For…Next loop in VB.Net and also write a progra...

Write the structure of For…Next loop in VB.Net and also write a program to print integers from 1 to 10 on the console.

The 486, The 486 Introduced in the year 1989 the 80486 did not feature ...

The 486 Introduced in the year 1989 the 80486 did not feature any radically new processor technology. Instead, it joints a 386 processor, a cache memory controller and a math c

Software interrupts-microprocessor, Software Interrupts Software interr...

Software Interrupts Software interrupts are the result of an INT instruction in an executed program.  It may be assumed as a programmer triggered event that immediately stops e

The real time system (rts)-microprocessor, The real time System (RTS) : ...

The real time System (RTS) : Calling the clock real-time is somewhat of a misnomer because it only shows the time setting it has been given. The RTC is the other half of chip

Div-idiv-arithmetic instruction-microprocessor, DIV: Unsigned Division:- T...

DIV: Unsigned Division:- This instruction performs unsigned division operation. It divides an unsigned word or double word by a 16-bit or 8-bit operand. The dividend might be in t

Read architecture:look aside cache-microprocessor, Read Architecture : Look...

Read Architecture : Look Aside Cache In "look aside" cache architecture the main memory is located conflictingthe system interface. Both the cache main memory sees a bus cycle

Program to average ten 16-bit values, Write a MC68HC12 assembly language pr...

Write a MC68HC12 assembly language program to average ten 16-bit values that are stored starting at address $1100. Place the two-byte result at $1110. Use indexed addressing. Us

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