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Home▸ Forums▸ 68kMLA▸ Mac SE CRT COLOR! — #4
Post #4 by Gorgonops
Source Forum68kMLA
Category68k
Post DateSat, 16 Apr 2011 - 21:36
Original URLhttps://68kmla.org/bb/threads/mac-se-crt-color.22846/
Post
What I'd like to know is how you get colour on a monochrome CRT...given that a monochrome CRT doesn't have red/green/blue guns, the most you should be able to get on one is greyscale. (as seen with the Micron XCEED greyscale adapter as used on the SE/30)
Note the giant color wheel? It's "time-multiplexing" the monochrome CRT by sequentially using it to provide the luminance value for the three primary colors. (Which exist as colored windows in the spinning wheel.) The setup here is similar to the CBS Field Sequential Color System proposed in 1949... and incidentally, similar to the system used in single-element DLP projection TVs.

And it's *totally awesome*. Bravo!