Vertical scrolling routine (MSX1)

I haven't found the feature 'cause I didn't search it. I didn't know that videorecording in openmsx exist. It's a very useful feature but I use openMSX 'cause it's accurate and I can measure cpu time with a script I copied from this forum... Didn't need videorecording until now...

thx Manuel, I'll go there and read for sure

Looking more and more like a full game!!! And the change in speed could be used to have some cinematic effects for bosses, for example! I forget which game was it, but I remember one of the classic arcade games I used to play made the scroll go faster during boss battles, which created a "urgency" effect that made you be more nervous when fighting a boss

I was extremely busy with work these past days. I added almost nothing but reverse SAT (thanks to ARTRAG that time ago send me a link to study it directly in his Uridium code). Now sprites won't disappear but just flicker (looking better in all the video). At the end of the video there are 8 sprites in the same line (4 two-coloured sprites)
Enjoy! (and let me know your impressions, suggestions and hints as always, I'm improving more and more thanks to you all)

https://youtu.be/_YlpSUeN7oE

It’s because Youtube does not support 60 fps for non-HD video, so it’s 30 fps. If you record in openmsx with -triplesize option, Youtube will show it as a 720p 60 fps video, which gives a smoother framerate and improves the way flickering looks.