Icon bar: CheckPauseButton

       Name: CheckPauseButton                                        [Show more]
       Type: Subroutine
   Category: Icon bar
    Summary: Check whether the pause button has been pressed or an icon bar
             button has been chosen, and process pause/unpause if required
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * LL164 calls CheckPauseButton


.CheckPauseButton

 LDA iconBarChoice      ; If iconBarChoice = 0 then the icon bar pointer is over
 BEQ RTS4               ; a blank button, so jump to RTS4 to return from the
                        ; subroutine

                        ; Otherwise fall through into CheckForPause_b0 to pause
                        ; the game if the pause button is pressed