80x86 assembly language I need to code the subroutine gets. The subroutine gets

Question

80x86 assembly language
I need to code the subroutine gets.
The subroutine gets has the following C signature: void gets(char *p).
When gets is invoked it receives a pointer to a location in memory that is ready to receive a string. The subroutine gets invokes getche() in a loop receiving characters from the user and saving each character within the memory space pointed to by p. When user presses enter key gets stops. program adds '' character to the end of string including the enter key.

i wrote my getche
getche:
mov ah, 1
int 21h
ret 2

Explanation / Answer

.data
index DB p
.code

getche:
MOV AH,01
INT 21H

MOV index,AL

INC index

CMP AL,0DH
JNZ getche

mov dl, ‘‘ ; dl = ‘a‘
MOV index,dl;

Comments:

1. First is the data segment where we store the pointer "P" to a variable "index"

2. "getche:" loop starts

3. at the end '' is added to last address

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