🚀 go-pugleaf

On 2 Jan 1996 15:18:58 GMT, om...@inforamp.net (Erno Csanyi) wrote:

>Hi, All!
>
>This is my first time in this newsgroup and I know only 1 thing in ASM: How to
>print things on the screen. But I'm trying to make a .COM file out of it. So I
>was wondering if anybody could send me the source for a .COM file that
>displays "Hello, World!" on the screen. Thanx in advance.
>
>- om...@inforamp.net
Here ya go!

model tiny
	.code
	org 100h
start:
	mov dx,offset msg		;get offset of msg
	mov ah,9                        ;Dos function code to print
	int 21h                         ; Do print
	mov	ax,4c00h                ; Dos exit function code
	int 21h                         ; End program
msg:	db	"Hello World!",10,13,'$' ; The message

	end	start

Erno Csanyi (om...@inforamp.net) wrote:
: Hi, All!

: This is my first time in this newsgroup and I know only 1 thing in ASM: How to
: print things on the screen. But I'm trying to make a .COM file out of it. So I
: was wondering if anybody could send me the source for a .COM file that
: displays "Hello, World!" on the screen. Thanx in advance.

No prob, here you go:

_TEXT   segment byte public
        assume cs:_TEXT,ds:_TEXT,es:_TEXT,ss:_TEXT
        org     0100h
        jumps
Start:
        jmp     Realstart
;###########################################################################
;############################# START DATA HERE #############################
;###########################################################################

MESSAGE  DB  "Hello World!",13,10,24h

;###########################################################################
;########################### END DATA, START CODE ##########################
;###########################################################################
Realstart:
        mov     ah,09			;select service 9
        lea     dx,message		;load offset of message into dx
        int     21h			;display text with int 21
;################################ Procedures ###############################
;################################# END CODE ################################
Exit:                                   ; end program
here
        mov     ax,4c00h                ; service 4ch
        int     21h                     ; int. 21 terminate program
        ENDS
        END Start

This is the most simplistic way.  If you really want to get complicated,
you can write it directly to the video memory, which is infinately faster
than a DOS interrupt, but also more complicated.

Hope this helps.
Chris
fd...@interaccess.com