Program to move string from offset-assembly program, Assembly Language

Assignment Help:

Program : A program to move a string of the data words from offset 2000H to offset 3000H the length of the string is OFH.

Solution :

For writing this program, we will use an significant facility, available in the 8086 instruction set, for example move string byte/word instruction. We will also study the flexibility imparted by this instructions to the 8086 assembly language program. First  write  the Program for 8085, supposing that the string is available at location 2000H and is to be moved at 3000 H.

786_program4.jpg

Now consider DS is suitably set, write the sequence for 8086. At first by using the index registers, the program may be written as given.

1453_program5.jpg

BY Comparing the above listings for 8085 and 8086 we can conclude that every instruction in 8085 listing is replaced by an alike instruction of 8086. The above 8086 listing is completely correct but it is not competent.  Let us try to write the listings for the similar purpose by using the string instruction.  Due to the assembler directives and the syntax, one may sense that the program is lengthy, though it eliminates 4 instructions for a MOVSW instruction.

140_program6.jpg


Related Discussions:- Program to move string from offset-assembly program

Can you write this Program for me please? , $NOMOD51 $NOSYMBOLS ;**********...

$NOMOD51 $NOSYMBOLS ;***************************************************************************** ; Spring 2013 Project ; ; FILE NAME : Project.ASM ; DATE : 3/30/20

Rcr-rcl-logic instruction-microprocessor, RCR: Rotate Right through Carry:...

RCR: Rotate Right through Carry:- This instruction rotates the contents  bit-wise of the destination operand right by the specified count through carry flag (CF). For each operati

Risc characteristics-microprocessor, RISC Characteristics : The  concep...

RISC Characteristics : The  concept  of  RISC  architecture  include  an  attempt  to  reduce  execution  time  by make  simple  the instruction set of the computer. The main c

Write program that will generate array of ten random number, 1. Write a pro...

1. Write a program that will generate an array of ten random 32-bit integers, and that will  display on the monitor the numbers followed by either the words " has the fourth bit se

Arithmrtic operation exercise assempley HELP!, Open notepad and enter the c...

Open notepad and enter the code for a program that calculates the following arithmetic expression: x = a + b + c - d - e + f The operands a, b, c, d, e, f, and x should be declared

Xor-logical instruction-microprocessor, XOR: Logical Exclusive OR: The XOR...

XOR: Logical Exclusive OR: The XOR operation is again carried out in a similar way to the AND and OR operation. The constraint over operands are also similar. The XOR operation pr

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

Call-unconditional branch instruction-microprocessor, CALL : Unconditional...

CALL : Unconditional Call:- This instruction is utilized to call a subroutine from a basic program. In case of assembly language programming, the term procedure is utilized int

Efficient assembly language program, (1) Write a program that will: (a) dis...

(1) Write a program that will: (a) display "Enter Your Name:" (b) convert the entered name to Capital letters (if small), If any other character is entered, the program wil

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