CODEWITHSUNDEEP
arraysassemblyx86dosa86
user2801000
user2801000

Reputation:

Populating an Array with 1-100 with A86 Assembly

I am trying to write an assembly program that uses a procedure to populate an array with values 1-100. The code that I have so far is as follows:

jmp main

first100 dw 100 dup (?)

main:
call prepare
call populate
mov ax, first100[0]
call putDec

mov ah, 04c
int 021
include ioProcs.inc

prepare:
mov ax, 1
mov bx, 0
mov cx, 100
ret

populate:
mov first100[bx], ax
inc ax
inc bx
loop populate
ret

However, the first value in the array first100 turns into 513 as opposed to 1. It is probably something simple, but where am I messing up? Thank you much for your time.

Upvotes: 1

Views: 1201

Answers (1)

2501
2501

Reputation: 25753

As @Jester mentioned you need to increment bx by two bytes in the populate loop.

You are creating an array of type dw, that is a word. It has a size of two bytes.

Upvotes: 0

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