This leads to the 3-level RGB cube generated from the 1-bit RGB cube in high horizontal resolution and CRT monitor effect.
* The same trick may be somewhat possible on the Sinclair QL (256x256x8 may work, 512x256x4 would produce some part of the CPC palette) or NEC PC-8801 (640x200x8)or any machine with basic 1bit (2 levels) RGB palette and 640x200 resolution, using CRT monitor.
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