CRT displays

This reminds me of the CRT display of a Cogar C4 (or ICL/Friden 1501). It is a standard 5" CRT with an almost ordinary deflection system. But the deflection itself is rotated/mirrored, i.e. the "vertical" sweep is from left to right and the "horizontal sweep" from top to bottom. So the display controller writes all characters from the first text column first (and then IIRC only the text lines 1,3,5 and 7). Then comes the next columns. After all 32 columns come the even text lines (there's a display mode which only displays lines 1,2,3 and 4; the display has a 32 x 8 character cells). But that's not all. There is a second horizontal deflection coil that interferes with the first main deflection coil (I think this is called twiggle sweep or something like that). This second coil deflects the beam according to the width of one character cell, and one raster line of a character is written on the screen during this time.