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⌂ ∞ ▽ Revs on the BBC Micro

Text: PrintFirstLine

       Name: PrintFirstLine                                          [Show more]
       Type: Subroutine
   Category: Text
    Summary: Prints a text token on the first text line at the top of the
             driving screen

    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * PrintSecondLineGap calls PrintFirstLine
             * ResetVariables calls PrintFirstLine
             * UpdateLapTimers calls PrintFirstLine
             * PrintSecondLine calls via PrintFirstLine+2




 Arguments:

   X                    The token number (0 to 54)



 Other entry points:

   PrintFirstLine+2     Print the token on the second text line at the top of
                        the driving screen



.PrintFirstLine

 LDA #24                \ Set A = 24 to use as the value for yCursor below, so
                        \ we print the text token on the first line of the two
                        \ text lines at the top of the driving screen

 STA yCursor            \ Move the cursor to pixel row A (which will either be
                        \ the first or the second text line at the top of the
                        \ screen)

 LDA #1                 \ Move the cursor to character column 1
 STA xCursor

                        \ Fall through into PrintToken to print the token in X
                        \ at (xCursor, yCursor)