Message Scroller

MESSAGE SCROLLER


by Christopher Priestley


from Your Sinclair #30 (June 1988)


[files MSCROLL1.*]





This month I decided to write a ritty-ditty, super slick, interrupt


driven message scroller and ... I did. And very proud of it I was too,


until a certain letter popped in through the post.





Blink.





Someone - by the name of Christopher Priestley - had written a similar


routine, and it was - shock! horror! gasp! - better than mine! And not


just better, much better! Fume!





Method





Well, not that my ego has been shattered and my confidence annihilated,


I'd better tell you how to use this McCandless-bashing program.





First use the hex loader (from Finder) to input the 10 lines of hex,


then save this with SAVE "message" CODE 40300,80 [81, actually. JimG].


Afterwards, tap in the little ol' Basic demo program, and save that with


SAVE "message2" LINE 900.





Info





Right, have you typed in the program? Run the demo? Commented on how my


program would've been better? Yes, good, now here's a list of the


variables used in the program so you can use the routine yourself:





POKE 40301,(start of message)-256*INT ((start of message)/256)


40302,INT((start of message)/256)


POKE 40322,(character set)-256*INT ((character set)/256)


40323,INT((character set)/256)


POKE 40326,Window row (0-23)


POKE 40335,Window column (0-31)


POKE 40348,Window length (0-31)


POKE 40375,Scrolling speed (0=fast, 118=slow)





Quite a lot, aren't there? My program didn't have so many ... mind you


my program wasn't so good ... winge ... moan ... winge ... fume ...





Proggies





I still think my program would have been presented better - winge -


here's the hex dump and the Basic demo.