Determine the use of loop instruction, Computer Engineering

Assignment Help:

Q. Determine the use of LOOP instruction?

Program:This program prints the alphabets (A-Z)

; Register used: AX, CX, DX

CODE SEGMENT

ASSUME: CS: CODE.    

MAINP:          MOV   CX, 1AH                    ; 26 in decimal = 1A in hexadecimal Counter.

                        MOV   DL, 41H                     ; Loading DL with ASCII hexadecimal of A.

NEXTC:          MOV   AH, 02H                     ; display result character in DL

            INT      21H                            ; DOS interrupt 

            INC      DL                             ; Increment DL for next char

            LOOP NEXTC                       ; Repeat until CX=0. (Loop automatically decrements

                                                                        ; CS and checks whether it is zero or not)

                        MOV   AX, 4C00H                ; Exit DOS

                        INT      21H                            ; DOS Call

CODE ENDS

END MAINP


Related Discussions:- Determine the use of loop instruction

Characteristics of a computer memory systems, Question: a) Describe wha...

Question: a) Describe what is meant by a "bus". There are two types of bus, dedicated and multiplexed. Give a brief description of both types of buses. b) Briefly explain f

Why is packet switching important, Why is packet switching important? Give ...

Why is packet switching important? Give at least two reasons. Packet switching is significant due to the following two purposes: 1. A sender and the receiver require coordin

Decomposition model of parallel programming, The PVM system supports functi...

The PVM system supports functional and data decomposition model of parallel programming. It attaches with C, C++, and FORTRAN. The C and C++ language bindings for the PVM user inte

Android mobile application, Students are needed to work in group of 3 and m...

Students are needed to work in group of 3 and make an Android mobile application falling under the following categories: Multimedia o    Eg: Camera app, mp3 player, ga

Describe in brief the history of e-commerce, Describe in brief the history ...

Describe in brief the history of E-Commerce.  History of E-commerce. E-commerce started before personal computers were prevalent and has grown into a multi-billion d

Explain what is the difference among isr & function call, In ISR there is n...

In ISR there is no return value but in function call there is return value

Digital electronics, design a ciruit which can work as a 4-bit binary adder...

design a ciruit which can work as a 4-bit binary adder as well as subtractor

How a pointer variable declared in c, How a pointer variable declared in C ...

How a pointer variable declared in C ? Why is it sometimes desirable to pass a pointer to a function as an argument? A pointer is a variable which contains the address in memor

How to create dlq rules table, DLQ - Dead Letter Queue If an applicati...

DLQ - Dead Letter Queue If an application tries to put a message to one more application and if it is not delivered then it goes to the DLQ. So DLQ is not anything but all und

Use of typewriters for multiple copies, Use of Typewriters for Multiple Cop...

Use of Typewriters for Multiple Copies : Offices frequently require copies of various letters and documents. The simplest method is to make the copies at the same time along with

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