Hello World!

; the easiest way to print "hello, world!"
name "hi"
org 100h
jmp start ; jump over string declaration
msg db "hello, world!", 0Dh,0Ah, 24h
start: lea dx, msg ; load effective address of msg into dx. mov ah, 09h ; print function is 9. int 21h ; do it!
mov ah, 0 int 16h ; wait for any key any....
ret ; return to operating system.