Write and run following programs using 8086 assembly language.(a)

Question

Write and run following programs using 8086 assembly language.

(a) Write and run a 8086 Assembly language program that converts a three digit ASCII number stored in three consecutive byte locations in the memory, into a binary number. The output should be stored in DX register. For example, if three consecutive byte locations contain '345' (please note they are three ASCII digits), then the DX should get binary equivalent of decimal number 543, which is (0000 0010 0001 1111)2. This binary value will be stored in DX register.

(b) Write and run (using appropriate calling program) a near procedure in 8086 assembly language, which is passed a single parameter by the calling program. The procedure checks if the input parameter has a value zero or not. If the value of input parameter is zero then procedure/program is terminated, otherwise a value of 1 is returned to the calling program, which then continue to execute the remaining program. Make and state suitable assumptions, if any.

(c) Write and run a 8086 assembly language program that finds the sum of first N natural numbers. The value of N is input to the assembly program. The sum is stored in DX register. Assume the value of N between 1 and 10 only.

21 Jan 2021

Answer :

Word Count : 564

Sure, I can provide you with assembly language code for each of the tasks you've mentioned. Below are the programs for each task:

(a) Convert ASCII to Binary:

```assembly
ORG 100h ; Set the origin of the program to 100h

MOV SI, 0000h ; Initialize SI to point to the start of the ASCII digits
MOV CX, 03h ; Set the loop counter to 3 (three digits)
MOV DX, 0000h ; Clear DX to store the result

ConvertLoop:
MOV AL, [SI] ; Load the ASCII digit into AL
SUB AL, 30h ; Convert ASCII to binary ('0' to 0, ______ ____ _______ __________ __________ _____ _____ ________ ________ ________.
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