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by flohofwoe 2813 days ago
In the case of Elite for BBC Micro I know it for certain that it does a mid-screen mode switch though ;) I remembered that Matt Godbolt mentioned this in one of his talks or blog posts when describing his JSBeep emulator, but couldn't find the reference unfortunately.

But anyway, it's also described here:

http://beebwiki.mdfs.net/MODE_5

The Amstrad CPC could also do this type of effect, although it could not freely position the raster interrupt. There are newer demos though that go quite crazy with reprogramming the display mid-screen, for instance:

https://floooh.github.io/tiny8bit/cpc.html?file=cpc/dtc.sna