Classic Computer Magazine Archive COMPUTE! ISSUE 46 / MARCH 1984 / PAGE 10

Smooth Scroll On The 64

I own a 64 and do a lot of programming in BASIC. I know that this computer is able to perform a smooth scroll in four directions. After consulting my Programmer's Reference Guide and several COMPUTE! articles, I figured out how to do this, but only seven pixels each way. Only when I was scrolling up was I able to scroll more than seven pixels. There is a noticeable flicker when going from the seventh pixel to the first. Is there a way to get a truly smooth scroll?

Andrew Werth

Because BASIC is relatively slow, you will always have a flicker when you scroll from one character to the next. To achieve a truly smooth scroll, you need to write a routine in machine language, which is far faster than BASIC.