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- DOSSEG
- .MODEL SMALL
- .STACK 200h
- .DATA
-
- Message db "This was printed using function 9 "
- db "of the DOS interrupt 21h.$"
-
- .CODE
-
- START:
- mov ax,seg Message ;moves the SEGMENT that `Message' is in into AX
- mov ds,ax ;moves ax into ds (ds=ax)
- ;you cannot do this -> mov ds,seg Message
-
- mov dx,offset Message ;move the OFFSET of `Message' into DX
- mov ah,9 ;Function 9 of DOS interupt 21h prints a string that
- int 21h ;terminates with a "$". It requires a FAR pointer to
- ;what is to be printed in DS:DX
-
- mov ax,4c00h ;Returns control to DOS
- int 21h ;MUST be here! Program will crash without it!
-
- END START
-