8086 16-bit helloworld.com

hello.asm

; nasm hello.asm -fbin -o hello.com
; to run in DosBox: dosbox hello.com
  org 100h 
 
section .text 
 
start:
	mov	ax, 13h
	int	10h

	mov	ax, 0xa000
	mov	es, ax
	xor	di, di
	cld

	xor	bl, bl

next_line:
	mov	cx, 0

next_point:
	mov	[es:di], cl
	inc	di
	inc	cx
	cmp	cx, 320
	jne	next_point

	inc	bl
	cmp	bl, 200
	jne	next_line

	; print greeting
	mov  dx, msg       ;'$'-terminated string
	mov  ah, 09h       ; write string to standard output from DS:DX
	int  0x21          ; call dos services
 
	int 20h
 
section .data
	; program data
 
	msg  db 'Hello #chlor'
	crlf db 0x0d, 0x0a
	endstr db '$'
 
section .bss
	; uninitialized data

screenshot.png