Interace on LCD TV need only 1x switch videoram after each interrupt. This cause 2x higher vertical resolution on LCD TV without flickering, full stable picture 256x384. Even lines are from one videoram, odd lines from other videoram. Which videoram correspond with even and odd lines ? It's impossible detect or know. User must it manually select in main sync menu. But we need this know only for drawing real hires graphic. Color graphic as gigascreen will se always very similar/same. Colors on TV are not mixed, show only 16 zx colors. UNREAL support this interlaced mode.
On FB is more info and examples (photos of real LCD TV + runable examples in TAP/Z80 files)
https://www.facebook.com/groups/1066251293516270/
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