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how to get keyboard input and if no input is pressed program doesn't stop 8086

Tough Turtle answered on April 26, 2020 Popularity 1/10 Helpfulness 1/10

answer how to get keyboard input and if no input is pressed program doesn't stop 8086

how to get keyboard input and if no input is pressed program doesn't stop 8086

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BITS 16
ORG 100h

_loop:

 ;
 ; L O O P   S T U F F
 ;

 ;Show a greeting message

 mov ah, 09h
 mov dx, strGreetings
 int 21h



 ;
 ; K E Y S   C H E C K
 ;


 ;Check for a keystroke

 mov ah, 01h
 int 16h
jz _loop                               ;ZF is set if no keystroke available

 ;A keystroke is present, remove it from the buffer
 ;so that we always check the last key pressed by the user

 xor ah, ah
 int 16h

 ;AL = ASCII code     
 ;AH = Scancode

 ;Check the key was ESC

 cmp al, ESC_ASCII_CODE 
jne _loop

 ;
 ; T E R M I N A T I O N
 ;

 mov ax, 4c00h
 int 21h

 ;[ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ]
 ;   [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ]
 ;[ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ]
 ;
 ;D A T A
 ;

 strGreetings db "Hello!", 13, 10, 24h

 ;[ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ]
 ;   [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ]
 ;[ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ] [ o ]
 ;
 ;E Q U A L S
 ;

 ESC_ASCII_CODE EQU 27

Popularity 1/10 Helpfulness 1/10 Language whatever

Source: stackoverflow.com

Tags: get input keyboard-input pressed whatever

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Contributed on Apr 26 2020

Tough Turtle

0 Answers Avg Quality 2/10

how to get keyboard input and if no input is pressed program doesn't stop 8086

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