USAGE ULTRA CEE DOOR

   As you suspect the UCDoor.lib is for use with Code option Parms=STACK,
   UCDoorR.lib is Code option Parms=REGISTER. Whichever you prefer.
   
   Just add it : fe. sc myprogram.c lib:ucdoor.lib
   
   Set up your program as follows:
   
        #include "UCDoor.h"
   
        struct Task          *thisTask;
        MDDOOR               *ucd_msg;
        struct MsgPort       *DoorControl;
        struct MsgPort       *DoorReply;
        BOOL                 is_carrierLost;
        int                  udc_result;     
                                  
        void cd_Door(int node)
        {
                /* your door code */
                
                /* check regurarly */
                if(cd_CarrierLost())
                    cd_End();
                    
        }
   
        void main(int argc,char *argv[])
        {
                cd_Main(argv[1]);
                if(udc_result != OK)
                {
                    /* whatever action is needed */
                    /* ERROR_MESSAGE      -> Couldn't allocate message
                       ERROR_CONTROLPORT  -> Couldn't find MAX's port
                       ERROR_REPLYPORT    -> Couldn't create door port
                       ERROR_CARRIERLOST  -> Transm. ended
                    */   
                }    
        }
        

    That's it !