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

Addressing mode of 8086-microprocessor, Addressing mode of 8086 : Addre...

Addressing mode of 8086 : Addressing mode specify a way of locating operands or data. Depending on the data types used the memory  addressing  modes and in the instruction  ,

Imul-arithmetic instruction-microprocessor, IMUL: Signed Multiplication: T...

IMUL: Signed Multiplication: This instruction multiplies a signed byte by a signed bit in source operand e in the register AL or signed word in source operand by signed word in th

8088 timing system diagram-Microprocessor, 8088  Timing System Diagram ...

8088  Timing System Diagram The 8088 address/data  bus is divided  in 3 parts (a) the lower 8 address/data  bits, (b) the middle 8 address bits, and (c) the upper 4 status/

Formulate the linear programming model , Print Media Advertising (PMA) has ...

Print Media Advertising (PMA) has been providing a contract to market Buzz Cola via newspaper ads in a main southern newspaper. Full-page ads in the weekday editions (Monday throug

Memory interface-microprocessor, Memory Interface              ...

Memory Interface                                                                  Figure: Memory Modulation design The memory of a computer contain of number of memo

Write a mips assembly language program, Write a MIPS/SPIM assembly language...

Write a MIPS/SPIM assembly language program that prints the smallest and largest values found in a non-empty table of N word-sized integers. The address of the first entry in your

Program., write a Mips program that read a string AND PRINT IT ON THE SCREE...

write a Mips program that read a string AND PRINT IT ON THE SCREEN

Das-arithmetic instruction-microprocessor, DAS: Decimal Adjust after Subtr...

DAS: Decimal Adjust after Subtraction:- This instruction converts the result of subtraction operation of 2 packed BCD numbers to a valid BCD number. The subtraction operation has

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.

Procedures, How to define procedures?

How to define procedures?

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