Flight: me1

       Name: me1                                                     [Show more]
       Type: Subroutine
   Category: Flight
    Summary: Erase an old in-flight message and display a new one
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * MESS calls me1


 Arguments:

   A                    The text token to be printed

   X                    Must be set to 0


.me1

 STX DLY                \ Set the message delay in DLY to 0, so any new
                        \ in-flight messages will be shown instantly

 PHA                    \ Store the new message token we want to print

 LDA MCH                \ Set A to the token number of the message that is
 JSR mes9               \ currently on-screen, and call mes9 to print it (which
                        \ will remove it from the screen, as printing is done
                        \ using EOR logic)

 PLA                    \ Restore the new message token