Vertical scrolling routine (MSX1)

And I'm here again...
the routine is mostly rewritten. Added double buffering, removed a lot of LDDR actions on tiles (now I read the from RAM with an offset). Also added JIFFY polling. No more flickering nor tiles flashing. Thank you all for your hints.
I'm pretty sure I can improve this routine even more. But before do it... I have to download and install openMSX (I'm soooo lazy, LoL) so I can test speed, cpu time etc etc.
Here's the video, enjoy!

https://m.facebook.com/groups/25612789952?view=permalink&id=...

https://www.facebook.com/100003691981352/posts/1476657649133...

Try this one

LoL, downloaded few hours ago. And discovered that I have to search for bios roms etc etc... And I have no idea where. I'll think about that later (now I have to really wake up and go to work XD)

I haven't none of them. I have to download what I need. Also I have to beat lazyness... I hate read insteuctions before use a software. But there isn't a user friendly interface so I have to.

Ok, tested on openMSX too.
I had to change all the OTIR instances with someting like:
Loop:
Outi
Jp nz,loop
to avoid garbage...
And all works fine!