ifp1
         use   defsfile
         endc

Type     set   Prgrm+Objct
Revs     set   ReEnt+1
edition  set   $01

         mod   OS9End,OS9Name,Type,Revs,Cold,256

OS9Name  fcs   "SayHi"
         fcb   edition

* routine cold
Cold     equ   *
* The following three instructions are important.  They cause the link
* count of this module to increase by 1.  This insures that the module
* stays in memory, even if forked from disk.
         leax  OS9Name,pcr
         clra
         os9   F$Link

         leay  SvcTbl,pcr
         os9   F$SSvc
         bcs   Exit
         clrb
Exit     os9   F$Exit

F$SAYHI  equ   $25

SvcTbl   equ   *
         fcb   F$SAYHI
         fdb   SayHi-*-2
         fcb   $80

* Entry point to F$SAYHI system call
SayHi    ldx   R$X,u
         bne   SayHi6
         leax  Hello,pcr
SayHi6   ldy   #40
         ldu   D.Proc
         lda   P$PATH+2,u
         os9   I$WritLn
         rts

Hello    fcc   "Hello there user."
         fcb   $0D

         emod

OS9End   equ   *
         end