Graphics: VduPoint

       Name: VduPoint                                                [Show more]
       Type: Subroutine
   Category: Graphics
    Summary: Draw a point on-screen using the standard VDU routines
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * DrawRivet calls VduPoint


 Arguments:

   X                    The x-coordinate of the point (0-159)

   Y                    The y-coordinate of the point (0-255)


.VduPoint

 LDA #69                \ Set A = 69 so the following VDU 25 command plots a
                        \ point at an absolute position on-screen

 BNE VduPlot            \ Jump to VduPlot to do the move (this BNE is
                        \ effectively a JMP as A is never zero