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

Hex , what is the hex value in ax after executing the instructions ax= 1E8...

what is the hex value in ax after executing the instructions ax= 1E8A bx=4080 add al,bl sub ah,bh

Write an assembly program to find out largest number, Program :  Write an...

Program :  Write an assembly program to find out the largest number from a given unordered array of 8-bit numbers that stored in the locations starting from a known address. S

maximim and minimum mode 8088-microprocessor, Maximim and Minimum mode 808...

Maximim and Minimum mode 8088 system : In the maximum mode, the pin 880 is lastingly high. The functions and timings of other pins of 8088 are exactly similar to 8086. Due to t

And-logical instruction-microprocessor, AND: Logical AND: This instruction...

AND: Logical AND: This instruction bit by bit ANDs the source operand that might be an immediate, or a memory location or register to the destination operand that might be a memor

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

Addsub, Using the AddSub program from Ch3 under c:\Masm615\examples as a re...

Using the AddSub program from Ch3 under c:\Masm615\examples as a reference, write a program that subtracts three 16-bit integers using only registers. Insert a call DumpRegs statem

Rep-string manipulation instruction-microprocessor, REP : Repeat Instructi...

REP : Repeat Instruction Prefix :- This instruction is utilized as a prefix to other instructions. The instruction in which the REP prefix is provided, is executed repetitively

Minecraft/Terminal issues, I am running a small minecraft server off of my ...

I am running a small minecraft server off of my old mac mini, and am having a big issue. My computer isn''t very good, and even just running this server is an issue. I use a comma

Cbw-cwd-arithmetic instruction-microprocessor, CBW: Convert Signed Byte to...

CBW: Convert Signed Byte to Word: This instruction converts a signed byte to a signed word. In other terms, it copies the sign bit of a byte to be converted to all of the bits in

Sub-arithmetic instruction-microprocessor, SUB: Subtract :- The subtract in...

SUB: Subtract :- The subtract instruction subtracts the source operand from destination operand and result is left in the destination operand. Source operand might be memory locati

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