Super Simple ZX81 Scrolling Example


Although I've been busy working with the ZX81 this month, it has been with my Gem Quest game…

Although I've been busy working with the ZX81 this month, it has been with my Gem Quest game. Not much to share yet there, but I am working on it. To get in something for the month, I thought I'd share an old demo program instead. Nothing super exciting for now, but will work to clean it up in August.

Since SCROLL Example is so short, I thought I'd just share here:

  10 FOR X=0 TO 30 STEP .3
  20 LET L=15+14*SIN X
  30 PRINT TAB L;"ZX"
  40 IF X>6.3 THEN SCROLL
  50 NEXT X

Nothing too exciting. I like the easy to create SIN wave. It looks decent enough. More next time!



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