New STOS modules, including syncscroll

[thomas3]

Hi all,

Been a while since I've done anything with STOS, but I've made a couple of things to share.

1) I've converted the Evl/DHS syncscroll to work in STOS.

Joystick input still works, and Missing Link timer B commands such as palsplit and raster SHOULD also work. There are still some relatively small issues with stability (in the interpreter particularly) so some of the interrupt hijinks/cheats that I have to perform to get this running in STOS may need further fiddling.

The source and an example prog are attached - example uses the Missing Link and Misty extensions. Feel free to modify the source any way you wish (including to see if you can improve stability).

2) I've made a very small fix to improve the stability of Missing Link timer B commands such as raster, which currently are affected with a gross level of jitter. Again, this fix preserves joystick input. Source and example attached.

Have fun x

[mlynn1974]

Hi Thomas,

That's wonderful. Thanks for that. This opens the door to lots of demo effects to be written in STOS.

Regards,
Michael.

[darklight]

They thomas3 - thanks for pointing me in this direction. Just wondering is there a way to get sprites to work with this technique? Seems normal stos sprites do not work.

[thomas3]

Haha yep. They won't, because they run on interrupt, but tbh I'd really recommend avoiding the default STOS sprite routines.

Can I recommend the Missing Link extension, and in particular the BOB command?

[darklight]

Can I recommend the Missing Link extension, and in particular the BOB command?

I will give Missing Link / Bobs a go - thanks.

[thomas3]

Hey,
Notwithstanding that Facebook is a tool of the apocalypse, there's a very helpful and active STOS user community group on there who can give you support around this kind of thing. Perhaps check it out if you get stuck.

[Encolpius]

Hey,
Notwithstanding that Facebook is a tool of the apocalypse, there's a very helpful and active STOS user community group on there who can give you support around this kind of thing. Perhaps check it out if you get stuck.

Not for me there isn't; I got 30 days' Facebook Jail for advocating the chronoassassination of Mark Zuckerberg.

[darklight]

So I got bobs working, but I need to overwrite the bob with the background again before moving it - otherwise it'll leave a trail. I'm guessing I'd need to do some sort of memory copy from a background buffer somewhere containing a copy of the original two screens - does this sound right? Do you have a favoured stos command for doing this?

[thomas3]

Hi,
That's right! Try the BLIT Missing Link command for this.