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SCROLLER


[file: Scroller]





Another one from Holland, this time from Paul van Duijn. This is a


versatile screen scrolling program which operates on the top seven


lines of the screen. The program is located at address 30000 and


before use you need to set up exactly the way in which it operates by


using the following POKES:





POKE 30021, length_of_the_line (max 32 characters)


POKE 30001,8*PEEK 30021


POKE 30002,256-PEEK 30021


POKE 30013,start_position_of_line (0=0,0 and 255=7,31)





Paul suggests, and I found it to be true, that the best way is to


completely fill the screen lines 0 to 7 with some characters and then


experiment by poking the above addresses with various numbers before


calling the routine with LET l=USR 30000