Cell scroll behaving differently in BEX and SecondBasic

[fabio]

I couldn't figure out why doing such a simple thing as scrolling cells wasn't working.
After digging and doing some tests, i found something odd.

Using the mega example :

devster.proboards.com/thread/777/scroll-modes-horizontal-interrupts

Moving the first 3 rows should result in a code like this :

for y=0 to 2
	scroll left,10,y
next y

But to achieve the same effect in SecondBasic, the y value has to be multiplied by 8.

Odd, since it's the code you would expect with HSCROLL_LINE enabled, not HSCROLL_CELL.
Or am i missing something ?

[Oruam]

I suspect that in BEX the scroll and scroll2 are the same, but I remember something that Adam told about he fixed it for SB, so you must use scroll2 inside for next.

In 60hz horizontally the screen has 224 pixels, and cells are groups of 8 pixels lines, so you get 28 total cells of lines

Try use it in Second Basic:

start:

setscrollmode scroll_cell,overall

Do

for y=0 to 27
scrollplane_A: SCROLL2,left,1,y
next

Loop

return

(sorry if I wrote something wrong, I am on my cellphone)

[jovial]

If you have any bug reports for SecondBASIC, you can join the discord: discord.gg/mysG3Q7

A new version is currently being worked on, so this kind of info might be helpful

[fabio]

Thanks a lot Oruam
Working like a charm

[fabio]

jovial

Nice. Didn't know there was a Discord Channel.
Gonna join the party then.