Keyboard: DJOY

       Name: DJOY                                                    [Show more]
       Type: Subroutine
   Category: Keyboard
    Summary: Scan the keyboard for cursor key or digital joystick movement
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * TT17 calls DJOY


IF _COMPACT

.DJOY

 JSR TT17X              \ Call TT17X to read the digital joystick and return
                        \ deltas as appropriate

 JMP TJ1                \ Jump to TJ1 in the TT17 routine to check for cursor
                        \ key presses and return the combined deltas for the
                        \ digital joystick and cursor keys, returning from the
                        \ subroutine using a tail call

ENDIF